Browse by Fellow

Sriram, K. ; Rao, A. R. ; Choi, C. S. (2012) Fast transition of type-B quasi-periodic oscillation in the black hole transient XTE J1817-330 Astronomy & Astrophysics, 541 (A6). pp. 305-348. ISSN 1432-0746

Basak, Rupal ; Rao, A. R. (2012) Correlation between the isotropic energy and the peak energy at zero fluence for the individual pulses of gamma-ray bursts: toward a universal physical correlation for the prompt emission The Astrophysical Journal, 749 (2). p. 132. ISSN 0004-637X

Basak, Rupal ; Rao, A. R. (2012) Measuring the pulse of GRB 090618: a simultaneous spectral and timing analysis of the prompt emission The Astrophysical Journal, 745 (1). p. 76. ISSN 0004-637X

Rao, A. R. ; Malkar, J. P. ; Hingar, M. K. ; Agrawal, V. K. ; Chakrabarti, Sandip K. ; Nandi, Anuj ; Debnath, D. ; Kotoch, T. B. ; Sarkar, R. ; Chidambaram, T. R. ; et, al. (2011) Onboard performance of the RT-2 detectors Solar System Research, 45 (2). pp. 123-134. ISSN 0038-0946

Sriram, K. ; Choi, C. S. ; Rao, A. R. (2011) A detection of an anti-correlated hard X-ray lag in AM Herculis Astronomy & Astrophysics, 525 . A146. ISSN 1432-0746

Sriram, K. ; Rao, A. R. ; Choi, C. S. (2011) Coupled HBO and NBO variations in the z source GX 5-1: inner accretion disk as the location of QPOs The Astrophysical Journal, 743 (2). L31. ISSN 0004-637X

Rao, A. R. ; Malkar, J. P. ; Hingar, M. K. ; Agrawal, V. K. ; Chakrabarti, S. K. ; Nandi, A. ; Debnath, D. ; Kotoch, T. B. ; Sarkar, R. ; Chidambaram, T. R. ; et, al. (2011) Detection of GRB 090618 with the RT-2 experiment on board the coronas-photon satellite The Astrophysical Journal, 728 (1). p. 42. ISSN 0004-637X

Kotoch, Tilak B. ; Nandi, Anuj ; Debnath, D. ; Malkar, J. P. ; Rao, A. R. ; Hingar, M. K. ; Madhav, Vaibhav P. ; Sreekumar, S. ; Chakrabarti, Sandip K. (2011) Instruments of RT-2 experiment onboard CORONAS-PHOTON and their test and evaluation II: RT-2/CZT payload Experimental Astronomy, 29 (1-2). pp. 27-54. ISSN 0922-6435

Nandi, Anuj ; Palit, S. ; Debnath, D. ; Chakrabarti, Sandip K. ; Kotoch, T. B. ; Sarkar, R. ; Yadav, Vipin K. ; Girish, V. ; Rao, A. R. ; Bhattacharya, D. (2011) Instruments of RT-2 experiment onboard CORONAS-PHOTON and their test and evaluation III: Coded Aperture Mask and Fresnel Zone Plates in RT-2/CZT payload Experimental Astronomy, 29 (1-2). pp. 55-84. ISSN 0922-6435

Sarkar, Ritabrata ; Mandal, Samir ; Debnath, Dipak ; Kotoch, Tilak B. ; Nandi, Anuj ; Rao, A. R. ; Chakrabarti, Sandip K. (2011) Instruments of RT-2 experiment onboard CORONAS-PHOTON and their test and evaluation IV: Background simulations using GEANT-4 toolkit Experimental Astronomy, 29 (1-2). pp. 85-107. ISSN 0922-6435

Sreekumar, S. S. ; Vinod, P. ; Samuel, Essy ; Malkar, J. P. ; Rao, A. R. ; Hingar, M. K. ; Madhav, V. P. ; Debnath, D. ; Kotoch, T. B. ; Nandi, Anuj ; et., al (2011) Instruments of RT-2 experiment onboard CORONAS-PHOTON and their test and evaluation V: Onboard software, data structure, telemetry and telecommand Experimental Astronomy, 29 (1-2). pp. 109-133. ISSN 0922-6435

Debnath, Dipak ; Nandi, Anuj ; Rao, A. R. ; Malkar, J. P. ; Hingar, M. K. ; Kotoch, T. B. ; Sreekumar, S. ; Madhav, V. P. ; Chakrabarti, Sandip K. (2011) Instruments of RT-2 experiment onboard CORONAS-PHOTON and their test and evaluation. I. Ground calibration of RT-2/S and RT-2/G Experimental Astronomy, 29 (1-2). pp. 1-25. ISSN 0922-6435

Dewangan, G. C. ; Misra, R. ; Rao, A. R. ; Griffiths, R. E. (2010) Associated spectral and temporal state transition of the bright ULX NGC 1313 X-1 Monthly Notices of the Royal Astronomical Society, 407 (1). pp. 291-300. ISSN 0035-8711

Rao, A. R. ; Malkar, J. P. ; Hingar, M. K. ; Agrawal, V. K. ; Chakrabarti, S. K. ; Nandi, A. ; Debnath, D. ; Kotoch, T. B. ; Chidambaram, T. R. ; Vinod, P. ; Sreekumar, S. ; Kotov, Y. D. ; Buslov, A. S. ; Yurov, V. N. ; Tyshkevich, V. G. ; Arkhangelskij, A. I. ; Zyatkov, R. A. ; Shaheda Begum, S. ; Manoharan, P. K. (2010) RT-2 detection of quasi-periodic pulsations in the 2009 July 5 solar hard X-ray flare The Astrophysical Journal, 714 (2). pp. 1142-1148. ISSN 0004-637X

Sriram, K. ; Rao, A. R. ; Choi, C. S. (2010) Anti-correlated soft lags in the intermediate state of black hole source GX 339–4 The Astrophysical Journal, 725 (1). p. 1317. ISSN 0004-637X

Nandi, Anuj ; Rao, A. R. ; Chakrabarti, Sandip K. ; Malkar, J. P. ; Sreekumar, S. ; Debnath, Dipak ; Hingar, M. K. ; Kotoch, Tilak ; Kotovk, Yuri ; Arkhangelskiy, Andrey (2009) Indian payloads (RT-2 Experiment) onboard CORONAS-PHOTON mission Proceedings of The 1st International Conference of Space Technology (ICST-2009), Greece 2009 . pp. 24-26. ISSN 0571-7256

Sriram, K. ; Agrawal, V. K. ; Rao, A. R. (2009) Energy-dependent time lags in the Seyfert 1 galaxy NGC 4593 The Astrophysical Journal, 700 (2). pp. 1042-1046. ISSN 0004-637X

Sriram, Kandulapati ; Agrawal, Vivek Kumar ; Rao, Arikkala Raghurama (2009) A truncated accretion disk in the galactic black hole candidate source H1743-322 Research in Astronomy and Astrophysics, 9 (8). pp. 901-910. ISSN 1674-4527

Chitnis, V. R. ; Pendharkar, J. K. ; Bose, D. ; Agrawal, V. K. ; Rao, A. R. ; Misra, R. (2009) X-ray variability of active galactic nuclei in the soft and hard X-ray bands The Astrophysical Journal, 698 (2). pp. 1207-1220. ISSN 0004-637X

Palit, Sourav ; Chakrabarti, Sandip Kumar ; Debnath, Dipak ; Rao, A. R. ; Nandi, Anuj ; Yadav, Vipin K. ; Girish, V. (2009) Fresnel zone plate telescopes for X-ray imaging. II. Numerical simulations with parallel and diverging beams Experimental Astronomy, 27 (1-2). pp. 77-93. ISSN 0922-6435

Dewangan, G. C. ; Mathur, S. ; Griffiths, R. E. ; Rao, A. R. (2008) X-ray emission from active galactic nuclei with intermediate-mass black holes The Astrophysical Journal, 689 (2). pp. 762-774. ISSN 0004-637X

Dewangan, G. C. ; Griffiths, R. E. ; Dasgupta, Surajit ; Rao, A. R. (2007) An investigation of the origin of soft X-ray excess emission from ARK 564 and MRK 1044 The Astrophysical Journal, 671 (2). pp. 1284-1296. ISSN 0004-637X

Sriram, K. ; Agrawal, V. K. ; Pendharkar, Jayant K. ; Rao, A. R. (2007) Anticorrelated hard X-ray time lags in galactic black hole sources The Astrophysical Journal, 661 (2). pp. 1055-1063. ISSN 0004-637X

Dasgupta, Surajit ; Rao, A. R. (2006) Discovery of Hard X-Ray delays in the X-Ray emission of the Seyfert 1 galaxy Markarian 110: possible evidence of comptonization The Astrophysical Journal Letters, 651 (1). L13-L16. ISSN 2041-8205

Dewangan, G. C. ; Griffiths, R. E. ; Rao, A. R. (2006) Quasi-periodic oscillations and strongly comptonized X-ray emission from Holmberg IX X-1 The Astrophysical Journal Letters, 641 (2). L125-L128. ISSN 2041-8205

Choudhury, Manojendu ; Rao, A. R. ; Dasgupta, Surajit ; Pendharkar, J. ; Sriram, K. ; Agrawal, V. K. (2005) Anticorrelated hard X-ray time lag in GRS 1915+105: evidence for a truncated accretion disk The Astrophysical Journal, 631 (2). pp. 1072-1081. ISSN 0004-637X

Zdziarski, Andrzej A. ; Gierlinski, Marek ; Rao, A. R. ; Vadawale, S. V. ; Mikolajewska, Joanna (2005) GRS 1915+105: the distance, radiative processes and energy-dependent variability Monthly Notices of the Royal Astronomical Society, 360 (3). pp. 825-838. ISSN 0035-8711

Dasgupta, Surajit ; Rao, A. R. ; Dewangan, G. C. ; Agrawal, V. K. (2005) Detection of absorption features in the X-Ray spectrum of the narrow-line quasar PG 1404+226: possible evidence of accretion disk winds The Astrophysical Journal Letters, 618 (2). L87-L90. ISSN 2041-8205

Choudhury, Manojendu ; Rao, A. R. (2004) Detection of an anticorrelated hard X-Ray time lag in Cygnus X-3 The Astrophysical Journal Letters, 616 (2). L143-L146. ISSN 2041-8205

Dasgupta, Surajit ; Rao, A. R. ; Dewangan, G. C. (2004) XMM-Newton observation of the narrow-line QSO PHL 1092: detection of a high and variable soft component The Astrophysical Journal, 614 (2). pp. 626-633. ISSN 0004-637X

Choudhury, M. ; Rao, A. R. ; Vadawale, S. V. ; Jain, A. K. ; Singh, N. S. (2004) Binary corrected X-ray light curve of Cygnus X-3: implications for the timing properties of the compact binary system Astronomy & Astrophysics, 420 (2). pp. 665-671. ISSN 0004-6361

Das, Tapas K. ; Rao, A. R. ; Vadawale, Santosh V. (2003) Quasi-periodic oscillation frequencies and mass-outflow rates in black hole powered Galactic microquasars Monthly Notices of the Royal Astronomical Society, 343 (2). pp. 443-455. ISSN 0035-8711

Vadawale, S. V. ; Rao, A. R. ; Naik, S. ; Yadav, J. S. ; Ishwara-Chandra, C. H. ; Pramesh Rao, A. ; Pooley, G. G. (2003) On the origin of the various types of radio emission in GRS 1915+105 The Astrophysical Journal, 597 (2). pp. 1023-1035. ISSN 0004-637X

Janawlekar, S. B. ; Malkar, J. P. ; Rao, A. R. ; Vadawale, S. V. ; Vahia, M. N. ; Umapathy, C. N. (2003) Control and operation of SOXS high energy detector Bulletin of the Astronomical Society of India, 31 (3). pp. 483-484. ISSN 0304-9523

Choudhury, M. ; Rao, A. R. ; Vadawale, S. V. ; Jain, A. K. (2003) Correlated radio: X-ray emission in the hard states of galactic microquasars The Astrophysical Journal, 593 (1). pp. 452-462. ISSN 0004-637X

Vahia, M. N. ; Mahajani, P. ; Rao, A. R. (2003) Search for periodicities in distribution of orbits of planets Bulletin of the Astronomical Society of India, 31 (1). pp. 37-47. ISSN 0304-9523

Naik, S. ; Rao, A. R. ; Chakrabarti, Sandip K. (2002) Fast transition between high-soft and low-soft states in GRS 1915 + 105: Evidence for a critically viscous accretion flow Journal of Astrophysics and Astronomy, 23 (3-4). pp. 213-233. ISSN 0250-6335

Chakrabarti, Sandip K. ; Nandi, Anuj ; Manickam, S. G. ; Mandal, S. ; Rao, A. R. (2002) Spectral signature of mass loss from (and mass gain by) an accretion disk around a black hole The Astrophysical Journal Letters, 579 (1). L21-L24. ISSN 2041-8205

Singh, N. S. ; Naik, S. ; Paul, B. ; Agrawal, P. C. ; Rao, A. R. ; Singh, K. Y. (2002) New measurements of orbital period change in Cygnus X-3 Astronomy & Astrophysics, 392 (1). pp. 161-167. ISSN 0004-6361

Choudhury, M. ; Rao, A. R. ; Vadawale, S. V. ; Ishwara-Chandra, C. H. ; Jain, A. K. (2002) Disk-jet connection in Cygnus X-3 Astronomy & Astrophysics, 383 (3). L35-L38. ISSN 0004-6361

Naik, S. ; Agrawal, P. C. ; Rao, A. R. ; Paul, B. (2002) X-ray properties of the microquasar GRS 1915+105 during a variability class transition Monthly Notices of the Royal Astronomical Society, 330 (2). pp. 487-496. ISSN 0035-8711

Choudhury, M. ; Rao, A. R. (2002) X-ray spectroscopy of Cygnus X-3 Journal of Astrophysics and Astronomy, 23 (1-2). pp. 39-43. ISSN 0250-6335

Nandi, A. ; Chakrabarti, S. K. ; Vadawale, S. V. ; Rao, A. R. (2001) Ejection of the inner accretion disk in GRS 1915+105: the magnetic rubber-band effect Astronomy and Astrophysics, 380 (1). pp. 245-250. ISSN 0004-6361

Singh, N. S. ; Singh, K. Y. ; Naik, S. ; Paul, B. ; Agrawal, P. C. ; Rao, A. R. ; Seetha, S. ; Kasturirangan, K. (2001) Observation of X-ray binary cygnus X-3 by Indian X-ray astronomy experiment Bulletin of the Astronomical Society of India, 29 . pp. 351-354. ISSN 0304-9523

Vadawale, S. V. ; Rao, A. R. ; Chakrabarti, S. K. (2001) Spectral differences between the radio-loud and radio-quiet low-hard states of GRS 1915+105: Possible detection of synchrotron radiation in X-rays Astronomy & Astrophysics, 372 (3). pp. 793-802. ISSN 0004-6361

Nandi, Anuj ; Manickam, Sivakumar G. ; Rao, A. R. ; Chakrabarti, Sandip K. (2001) On the source of quasi-periodic oscillations of the black hole candidate GRS 1915+105: some new observations and their interpretation Monthly Notices of the Royal Astronomical Society, 324 (1). pp. 267-272. ISSN 0035-8711

Zdziarski, Andrzej A. ; Eric Grove, J. ; Poutanen, Juri ; Rao, A. R. ; Vadawale, S. V. (2001) OSSE and RXTE observations of GRS 1915+105: evidence for nonthermal comptonization The Astrophysical Journal Letters, 554 (1). L45-L48. ISSN 0571-7248

Paul, B. ; Agrawal, P. C. ; Mukerjee, K. ; Rao, A. R. ; Seetha, S. ; Kasturirangan, K. (2001) IXAE observations of the X-ray pulsar XTE J1946+274 Astronomy & Astrophysics, 370 (2). pp. 529-532. ISSN 0004-6361

Vadawale, S. V. ; Rao, A. R. ; Nandi, A. ; Chakrabarti, S. K. (2001) Observational evidence for mass ejection during soft X-ray dips in GRS 1915+105 Astronomy and Astrophysics, 370 (1). L17-L21. ISSN 0004-6361

Mukerjee, K. ; Agrawal, P. C. ; Paul, B. ; Rao, A. R. ; Yadav, J. S. ; Seetha, S. ; Kasturirangan, K. (2001) Pulse characteristics of the X-ray pulsar 4U 1907+09 The Astrophysical Journal, 548 (1). pp. 368-376. ISSN 0004-637X

Naik, S. ; Agrawal, P. C. ; Rao, A. R. ; Paul, B. ; Seetha, S. ; Kasturirangan, K. (2001) Detection of a series of X-ray dips associated with a radio flare in GRS 1915+105 The Astrophysical Journal, 546 (2). pp. 1075-1085. ISSN 0004-637X

Rao, A. R. (2001) Inner disk oscillations and QPOs in relativistic jet sources Astrophysics and Space Science, 276 (1). pp. 175-182. ISSN 0004-640X

Paul, B. ; Naik, S. ; Singh, N. S. ; Singh, K. Y. ; Agrawal, P. C. ; Rao, A. R. ; Seetha, S. ; Kasturirangan, K. (2001) New measurements of orbital period changes in Cygnus X-3 Advances in Space Research, 28 (2-3). pp. 405-409. ISSN 0273-1177

Manchanda, R. K. ; Rao, A. R. (2001) Observation of hard X-ray emission from GRO J1744-28 in the 20–200 keV band during declining phase Advances in Space Research, 28 (2-3). pp. 337-341. ISSN 0273-1177

Agrawal, P. C. ; Naik, S. ; Rao, A. R. ; Paul, B. ; Seetha, S. ; Kasturirangan, K. (2001) Peculiar X-ray dips in the superluminal source GRS 1915+105 observed in the soft state Advances in Space Research, 28 (2-3). pp. 355-361. ISSN 0273-1177

Paul, B. ; Rao, A. R. (2001) Spectral evolution of GRS 1915+105 during the regular flares AIP Conference Proceedings: X-RAY ASTRONOMY: Stellar Endpoints,AGN, and the Diffuse X-ray Background, 599 . pp. 846-849. ISSN 0094-243X

Yadav, J. S. ; Rao, A. R. (2001) X-ray bursts from the galactic X-ray transient source GRS 1915+105 Advances in Space Research, 28 (2-3). pp. 363-367. ISSN 0273-1177

Rao, A. R. ; Paul, B. ; Yadav, J. S. ; Vadawale, S. V. (2001) X-ray emission characteristics of GRS 1915+105 during the two spectral states Advances in Space Research, 28 (2-3). pp. 343-347. ISSN 0273-1177

Yadav, J. S. ; Rao, A. R. (2001) X-ray flares/bursts from GRS 1915+105 and the two component accretion flow Astrophysics and Space Science, 276 (1suppl). pp. 221-224. ISSN 0004-640X

Rao, A. R. ; Yadav, J. S. ; Paul, B. (2000) Rapid state transitions in the galactic black hole candidate source GRS 1915+105 The Astrophysical Journal, 544 (1). pp. 443-452. ISSN 0004-637X

Naik, S. ; Rao, A. R. (2000) Disk-jet connection in GRS 1915+105: X-ray soft dips as cause of radio flares Astronomy & Astrophysics, 362 (2). pp. 691-696. ISSN 0004-6361

Rao, A. R. ; Naik, S. ; Vadawale, S. V. (2000) X-ray spectral components in the hard state of GRS 1915+105: origin of the 0.5 - 10 Hz QPO Astronomy and Astrophysics, 360 (2). L25-L29. ISSN 0004-6361

Naik, S. ; Agrawal, P. C. ; Paul, B. ; Rao, A. R. ; Seetha, S. ; Kasturirangan, K. (2000) X-ray observation of XTE J2012+381 during the 1998 outburst Journal of Astrophysics and Astronomy, 21 (1-2). pp. 29-38. ISSN 0250-6335

Jain, Rajmal ; Rao, A. R. ; Deshpande, M. R. ; Dwivedi, B. N. ; Manoharan, P. K. ; Seetha, S. ; Vahia, M. N. ; Vats, Hari Om ; Venkatakrishnan, P. (2000) Science from "Solar X-ray spectrometer (SOXS)" - proposed payload onboard Indian satellite Bulletin of the Astronomical Society of India, 28 . pp. 117-119. ISSN 0304-9523

Naik, S. ; Agrawal, P. C. ; Paul, B. ; Rao, A. R. ; Seetha, S. ; Kasturirangan, K. (2000) Observation of X-ray transient XTE J1748-288 by the Indian X-ray astronomy experiment Astronomy and Astrophysics, 354 . pp. 938-942. ISSN 0004-6361

Mukerjee, K. ; Agrawal, P. C. ; Paul, B. ; Rao, A. R. ; Seetha, S. ; Kasturirangan, K. (2000) Luminosity dependent changes in the X-ray pulse profile of the transient pulsar Cepheus X-4 during its declining phase of the 1997 outburst Astronomy & Astrophysics, 353 . pp. 239-243. ISSN 0004-6361

Yadav, J. S. ; Agrawal, P. C. ; Paul, B. ; Rao, A. R. ; Seetha, S. ; Kasturirangan, K. (2000) Different types of X-ray bursts during high state of the superluminal source GRS 1915+105 Advances in Space Research, 25 (3-4). pp. 441-444. ISSN 0273-1177

Paul, B. ; Agrawal, P. C. ; Rao, A. R. (2000) Low frequency quasi-periodic oscillations in the hard X-ray emission from Cygnus X-1 Advances in Space Research, 25 (3-4). pp. 429-432. ISSN 0273-1177

Vadawale, S. V. ; Rao, A. R. ; Malkar, J. P. (2000) Position sensitive proportional counter Bulletin of the Astronomical Society of India, 28 . pp. 447-449. ISSN 0304-9523

Paul, B. ; Rao, A. R. (2000) Pulse phase resolved spectra and QPOs of XTE J1858+034 Nuclear Physics B Proceedings Supplements, 80 . pp. 15-18. ISSN 0920-5632

Agrawal, P. C. ; Mukerjee, K. ; Naik, S. ; Paul, B. ; Rao, A. R. ; Yadav, J. S. ; Kasturirangan, K. ; Seetha, S. ; Singh, K. Y. (2000) Studies of binary sources with the Indian X-ray astronomy experiment Advances in Space Research, 25 (3-4). pp. 357-362. ISSN 0273-1177

Rao, A. R. ; Yadav, J. S. ; Seetha, S. ; Kasturirangan, K. ; Agrawal, P. C. ; Paul, B. ; Mukerjee, K. (2000) Study of two pulsars with the Indian X-ray astronomy experiment Bulletin of the Astronomical Society of India, 28 (2). pp. 293-294. ISSN 0304-9523

Naik, S. ; Agrawal, P. C. ; Paul, B. ; Rao, A. R. ; Seetha, S. ; Kasturirangan, K. (2000) X-ray observation of XTE J2012+381 during the 1998 outburst Journal of Astrophysics and Astronomy, 21 (1-2). pp. 29-38. ISSN 0250-6335

Naik, S. ; Agrawal, P. C. ; Paul, B. ; Rao, A. R. ; Seetha, S. ; Kasturirangan, K. (2000) The X-ray observation of newly discovered transient XTE J1748-288 by the Indian X-ray astronomy experiment Bulletin of the Astronomical Society of India, 28 (2). 289 -291. ISSN 0304-9523

Agrawal, P. C. ; Mukerjee, K. ; Paul, B. ; Rao, A. R. ; Seetha, S. ; Kasturirangan, K. (1999) Study of X-ray pulsars Cep X-4 and 4u 1907+09 Astronomische Nachrichten, 320 (4-5). p. 346. ISSN 0004-6337

Yadav, J. S. ; Rao, A. R. ; Agrawal, P. C. ; Paul, B. ; Seetha, S. ; Kasturirangan, K. (1999) Different types of X-ray bursts from GRS 1915+105 and their origin The Astrophysical Journal, 517 (2). pp. 935-950. ISSN 0004-637X

Mukerjee, K. ; Agrawal, P. C. ; Paul, B. ; Rao, A. R. ; Vahia, M. N. ; Yadav, J. S. ; Seetha, S. ; Kasturirangan, K. (1999) Energy dependence of x-ray pulse profile of the crab pulsar Bulletin of the Astronomical Society of India, 27 (1). pp. 181-184. ISSN 0304-9523

Shanthi, K. ; Rao, A. R. ; Bhat, C. L. ; Vahia, M. N. (1999) Hint of a galactic origin for a sub-population of extremely short and hard cosmic gamma-ray bursts Bulletin of the Astronomical Society of India, 27 (1). pp. 195-198. ISSN 0304-9523

Rao, A. R. (1999) The Indian multi-wavelength astronomy satellite Bulletin of the Astronomical Society of India, 27 (2). pp. 289-293. ISSN 0304-9523

Yadav, J. S. ; Agrawal, P. C. ; Paul, B. ; Rao, A. R. ; Vahia, M. N. ; Seetha, S. ; Kasturirangan, K. (1999) X-ray bursts from GRS 1915+105 observed with IXAE Bulletin of the Astronomical Society of India, 27 (1). pp. 177-179. ISSN 0304-9523

Rao, A. R. (1999) X-ray detectors in astronomy Indian Journal of Physics, 73B (6). pp. 945-956. ISSN 0019-5480

Rao, A. R. ; Agrawal, P. C. ; Paul, B. ; Vahia, M. N. ; Yadav, J. S. ; Marar, T. M. K. ; Seetha, S. ; Kasturirangan, K. (1998) Observations of Cygnus X-1 during the two spectral states with the Indian X-ray astronomy experiment (IXAE) Astronomy & Astrophysics, 330 . pp. 181-188. ISSN 0004-6361

Paul, B. ; Agrawal, P. C. ; Rao, A. R. ; Vahia, M. N. ; Yadav, J. S. ; Marar, T. M. K. ; Seetha, S. ; Kasturirangan, K. (1998) X-ray variability of GRS 1915+105 during the low-hard state observed with the Indian X-ray astronomy experiment (IXAE) Astronomy & Astrophysics, 128 (1). pp. 145-151. ISSN 0004-6361

Paul, B. ; Agrawal, P. C. ; Rao, A. R. ; Vahia, M. N. ; Yadav, J. S. ; Seetha, S. ; Kasturirangan, K. (1998) Quasi-regular X-ray bursts from GRS 1915+105 observed with the IXAE: possible evidence for matter disappearing into the event horizon of the black hole The Astrophysical Journal Letters, 492 (1). L63-L66. ISSN 0004-637X

Rao, A. R. ; Agrawal, P. C. ; Shah, M. R. ; Paul, B. ; Manchanda, R. K. (1998) Background reduction in a balloon-borne hard X-ray telescope Advances in Space Research, 21 (7). pp. 1025-1028. ISSN 02731177

Chitnis, V. R. ; Rao, A. R. ; Agrawal, P. C. (1998) Broad band X-ray spectrum of Cygnus X-1 Astronomy & Astrophysics, 331 (1). pp. 251-261. ISSN 0004-6361

Rao, A. R. ; Agrawal, P. C. ; Paul, B. ; Manchanda, R. K. ; Singh, K. Y. (1998) Hard X-ray pulse profile of GX1+4 Advances in Space Research, 22 (7). pp. 1003-1006. ISSN 02731177

Rao, A. R. ; Vahia, M. N. (1998) High energy phenomena associated with gamma ray burst sources Advances in Space Research, 22 (7). pp. 1101-1104. ISSN 02731177

Paul, B. ; Agrawal, P. C. ; Rao, A. R. (1998) Low frequency quasi-periodic oscillations in the hard x-ray emission from cygnus x-1 Journal of Astrophysics and Astronomy, 19 (1-2). pp. 55-61. ISSN 0250-6335

Paul, B. ; Agrawal, P. C. ; Rao, A. R. ; Vahia, M. N. ; Yadav, J. S. ; Marar, T. M. K. ; Seetha, S. ; Kasturirangan, K. (1997) Rapid X-ray variability of the superluminal source GRS 1915+105 Astronomy & Astrophysics, 320 . L37-L40. ISSN 0004-6361

Paul, B. ; Agrawal, P. C. ; Rao, A. R. (1997) Rapid X-ray variability of the superluminal source GRS1915+105 Astronomy & Astrophysics, 320 (2). L37-L40. ISSN 0004-6361

Paul, B. ; Agrawal, P. C. ; Rao, A. R. ; Manchanda, R. K. (1997) A double peaked pulse profile observed in GX 1+4 Astronomy and Astrophysics, 319 (2). pp. 507-510. ISSN 0004-6361

Paul, B. ; Rao, A. R. ; Singh, K. P. (1997) Torque-luminosity correlation and possible evidence for core-crust relaxation in the X-ray pulsar GX 1+4 Astronomy & Astrophysics, 329 (2). L9-L12. ISSN 0004-6361

Misra, R. ; Chitnis, V. R. ; Melia, F. ; Rao, A. R. (1997) A transition disk model fit for the broadband X-ray spectrum of cygnus X-1 The Astrophysical Journal, 487 (1). pp. 388-395. ISSN 0004-637X

Agrawal, P. C. ; Paul, B. ; Rao, A. R. ; Shah, M. R. ; Mukerjee, K. ; Vahia, M. N. ; Yadav, J. S. ; Dedhia, D. K. ; Malkar, J. P. ; Shah, P. ; Damle, S. V. ; Marar, T. M. K. ; Seetha, S. ; Chitnis, V. R. ; Upadhyaya, N. ; Sharma, R. K. ; Murthy, N. S. ; Umapathy, C. N. ; Abraham, L. ; Kasturirangan, K. (1996) X-ray astronomy experiment on the Indian satellite IRS-P3 Journal of the Korean Astronomical Society, Suppl. 29 . S429-S429. ISSN 1225-4614

Agrawal, P. C. ; Paul, B. ; Rao, A. R. ; Vahia, M. N. ; Yadav, J. S. ; Marar, T. M. K. ; Seetha, S. ; Kasturirangan, K. (1996) GX 1+4 and GRS 1915+105 IAU Circular, 6488 (1). No pp. given.

Paul, B. ; Agrawal, P. C. ; Rao, A. R. ; Manchanda, R. K. (1996) HER X-1 observed in a low state Bulletin of the Astronomical Soceity of India, 24 (4). pp. 737-741. ISSN 0304-9523

Agrawal, P. C. ; Paul, B. ; Manchanda, R. K. ; Rao, A. R. (1996) Hard x-ray pulsations in Gx 1+4 Journal of the Korean Astronomical Society, 29 . S219. ISSN 1225-4614

Paul, B. ; Agrawal, P. C. ; Rao, A. R. ; Manchanda, R. K. (1996) A double peaked pulse profile observed in GX 1 + 4 Bulletin of the Astronomical Soceity of India, 24 (4). pp. 729-736. ISSN 0304-9523

Vahia, M. N. ; Rao, A. R. (1995) On the stellar origin of gamma ray bursts Astrophysics and Space Science, 231 (1-2). pp. 427-430. ISSN 0004-640X

Rao, A. R. ; Paul, B. ; Chitnis, V. R. ; Agrawal, P. C. ; Manchanda, R. K. (1994) Detection of a very low hard X-ray pulse fraction in the bright state of GX 1+4 Astronomy & Astrophysics, 289 (3). L43-L46. ISSN 0004-6361

Rao, A. R. ; Vahia, M. N. (1994) On the possible source of GRB 930131 Astronomy & Astrophysics, 287 (2). L34-L36. ISSN 0004-6361

Rajeev, M. R. ; Chitnis, V. R. ; Rao, A. R. ; Singh, K. P. (1994) Generalized spectral model for 1-100 keV X-ray emission from Cygnus X-3 based on EXOSAT data The Astrophysical Journal, 424 (1). pp. 376-394. ISSN 0004-637X

Agrawal, P. C. ; Chitnis, V. R. ; Manchanda, R. K. ; Rao, A. R. ; Shah, M. R. ; Dedhia, D. K. ; Mukerjee, K. (1994) Baloon-borne observations using a large area xenon detector telescope above 20 keV Advances in Space Research, 14 (2). pp. 109-112. ISSN 0273-1177

Rao, A. R. ; Vahia, M. N. (1994) Observational constraints on the inter-binary stellar flare hypothesis for the gamma-ray bursts Astronomy & Astrophysics, 281 (1). L21-L24. ISSN 0004-6361

Manchanda, R. K. ; Rao, A. R. (1993) Periodic components in Cyg X-3 Advances in Space Research, 13 (12). pp. 335-338. ISSN 0273-1177

Chitnis, V. R. ; Agrawal, P. C. ; Manchanda, R. K. ; Rao, A. R. (1993) Hard X-ray spectra of some X-ray binaries from balloon-borne observations Bulletin Astronomical Society of India, 21 (3-4). pp. 555-559. ISSN 0304-9523

Chitnis, V. R. ; Rao, A. R. ; Agrawal, P. C. ; Manchanda, R. K. (1993) Hard X-ray spectrum of 4U 1907 + 09 Astronomy and Astrophysics, 268 (2). pp. 609-614. ISSN 0004-6361

Agrawal , P. C. ; Manchanda, R. K. ; Rao, A. R. ; Shah, M. R. ; Dedhia, D. K. ; Mukherjee, K. (1993) Hard X-ray studies with a balloon-borne large area xenon detector telescope Advances in Space Research, 13 (2). pp. 197-200. ISSN 02731177

Chitnis, V. R. ; Rao, A. R. ; Agrawal, P. C. ; Manchanda, R. K. (1993) Hard X-ray spectrum of 4U 1907+ 09 Astronomy & Astrophysics, 268 (2). pp. 609-614. ISSN 0004-6361

Rao, A. R. (1993) Present status of hard X-ray astronomy Bulletin Astronomical Society of India, 21 (3-4). pp. 303-312. ISSN 0304-9523

Singh, K. P. ; Rao, A. R. ; Vahia, M. N. (1992) EXOSAT measurement of the spectrum of Markarian 382 Astronomy & Astrophysics, 262 (1). pp. 49-51. ISSN 0004-6361

Chitnis, V. R. ; Rao, A. R. ; Shah, M. R. (1992) Dead-time correction in time-based telemetry systems with buffer memories Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 314 (1). pp. 204-208. ISSN 0168-9002

Singh, K. P. ; Rao, A. R. ; Vahia, M. N. (1992) X-ray continuum and line emission of the Seyfert galaxy MCG - 5-23-16 The Astrophysical Journal, 385 . pp. 132-136. ISSN 0004-637X

Rao, A. R. ; Singh, K. P. ; Vahia, M. N. (1992) X-ray variability in the Seyfert galaxy Markarian 618 Monthly Notices of the Royal Astronomical Society, 255 (2). pp. 197-202. ISSN 0035-8711

Vahia, M. N. ; Rao, A. R. ; Singh, R. K. (1991) Cosmic rays from magnetically active stellar systems Astronomy and Astrophysics, 250 (2). pp. 424-430. ISSN 0004-6361

Singh, K. P. ; Rao, A. R. ; Vahia, M. N. (1991) X-ray observations of the bright Seyfert galaxy IC 4329A The Astrophysical Journal, 377 . pp. 417-425. ISSN 0004-637X

Singh, K. P. ; Rao, A. R. ; Vahia, M. N. (1991) X-ray luminosity and spectral variability in the Seyfert type I galaxy : PG 2130+099 The Astrophysical Journal, 372 . pp. 49-53. ISSN 0004-637X

Singh, K. P. ; Rao, A. R. ; Vahia, M. N. (1991) EXOSAT observations of a quasar PKS 2135-147 Astronomy & Astrophysics, 243 (1). pp. 67-70. ISSN 0004-6361

Rao, A. R. ; Agrawal, P. C. ; Manchanda, R. K. (1991) Hard X-ray observations of cygnus X-3 Astronomy & Astrophysics, 241 (1). pp. 127-130. ISSN 0004-6361

Singh, K. P. ; Rao, A. R. ; Vahia, M. N. (1991) Observations of X-ray spectra of two nearby QSO's - MRK 205 and MRK 1148 Astronomy and Astrophysics, 248 (1). pp. 37-44. ISSN 0004-6361

Machanda, R. K. ; Agrawal, P. C. ; Rao, A. R. (1991) Quasi-periodic behaviour of Cyg X-3 Bulletin of the Astronomical Society of India, 19 (3-4). p. 201. ISSN 0304-9523

Singh, K. P. ; Rao, A. R. ; Vahia, M. N. (1990) X-ray Observations of the Radio Galaxy Pictor A Monthly Notices of the Royal Astronomical Society, 246 (4). pp. 706-711. ISSN 0035-8711

Rao, A. R. ; Singh, K. P. (1990) EXOSAT observations of the rapidly rotating flare star gliese 890 The Astrophysical Journal, 352 . pp. 303-306. ISSN 0004-637X

Singh, K. P. ; Rao, A. R. ; Vahia, M. N. (1990) EXOSAT observations of the blazar PKS 1510-089 The Astrophysical Journal, 365 (2). pp. 455-459. ISSN 0004-637X

Rao, A. R. ; Singh, K. P. ; Vahia, M. N. (1990) EXOSAT observations of the suspected flare star BD + 48°1958A The Astrophysical Journal, 365 (1). pp. 332-335. ISSN 0004-637X

Rao, A. R. ; Vahia, M. N. (1990) Fast transient X-rays and gamma ray bursts—are they stellar flares? Advances in Space Research, 10 (2). pp. 187-189. ISSN 0273-1177

Vahia, M. N. ; Rao, A. R. (1990) Magnetic activity in interbinary regions Advances in Space Research, 10 (2). pp. 191-194. ISSN 02731177

Brandt, S. ; Lund, N. ; Rao, A. R. (1990) The watch all-sky monitor for the granat project Advances in Space Research, 10 (2). pp. 239-242. ISSN 0273-1177

Paul, B. ; Rao, A. R. (1988) Quasi-periodic oscillations discovered in the new X-ray pulsar XTE J1858+034 Astronomy & Astrophysics, 337 (3). pp. 815-818. ISSN 0004-6361

Vahia, M. N. ; Rao, A. R. (1988) Origin of the gamma ray bursts Astronomy & Astrophysics, 207 (1). pp. 55-69. ISSN 0004-6361

Kunte, P. K. ; Rao, A. R. ; Vahia, M. N. (1988) Variation of stellar coronal activity with age Astrophysics and Space Science, 143 (1). pp. 207-210. ISSN 0004-640X

Manchanda, R. K. ; Agrawal, P. C. ; Rao, A. R. (1987) Hard X-ray observation of galactic X-ray sources Proceedings of the 20th International Cosmic Ray Conference Moscow, 1 . pp. 99-102.

Rao, A. R. ; Agrawal, P. C. ; Manchanda, R. K. ; Shah, M. R. (1987) Fabrication and flight performance of a large area balloon borne hard X-ray telescope Advances in Space Research, 7 (7). pp. 129-131. ISSN 0273-1177

Rao, A. R. ; Vahia, M. N. (1987) Fast transient X-rays from flare stars and RS CVn binaries Astronomy & Astrophysics, 188 (1). pp. 109-113. ISSN 0004-6361

Rao, A. R. ; Vahla, M. N. (1987) Sun like activity from active stars and its implications Bulletin of the Astronomical Society of India, 15 (1). p. 22. ISSN 0304-9523

Kunte, P. K. ; Rao, A. R. ; Vahia, M. N. (1987) Variation of coronal activity with age in late type stars Bulletin of the Astronomical Society of India, 15 (1). p. 27. ISSN 0304-9523

Agrawal, P. C. ; Manchanda, R. K. ; Rao, A. R. (1987) X-ray observations of the binary pulsar 4U:1907+09 Bulletin of the Astronomical Society of India, 15 (1). p. 36. ISSN 0304-9523

Agrawal, P. C. ; Rao, A. R. ; Sreekantan, B. V. (1986) Study of quiescent state X-ray emission from flare stars Monthly Notices of the Royal Astronomical Society, 219 . pp. 225-239. ISSN 0035-8711

Agrawal, P. C. ; Rao, A. R. ; Riegler, G. R. (1986) Detection of an X-ray flare in the RS CVn binary sigma Coronae borealis Monthly Notices of the Royal Astronomical Society, 219 (4). pp. 777-784. ISSN 0035-8711

Rao, A. R. ; Vahia, M. N. (1986) Similarity in corona and flare production mechanisms in sun and stars Advances in Space Research, 6 (8). pp. 85-88. ISSN 02731177

Rao, A. R. ; Agrawal, P. C. (1986) X-ray flaring activity of flare stars and RS CVn binaries Advances in Space Research, 6 (8). pp. 129-132. ISSN 02731177

Kunte, P. K. ; Rao, A. R. ; Vahia, M. N. (1984) Correlation between X-ray luminosity and the deviations from the main-sequence colour-diagram for stellar X-ray sources Astrophysics and Space Science, 105 (2). pp. 295-300. ISSN 0004-640X

Agrawal, P. C. ; Riegler, G. R. ; Rao, A. R. (1983) A new AM Her-like X-ray source Nature, 301 (5898). pp. 318-321. ISSN 0028-0836

Agrawal, P. C. ; Rao, A. R. (1982) Quiscent X-ray emission from flare stars Bulletin of the Astronomical Society of India, 10 . p. 34. ISSN 0304-9523