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Mahajan, K. K. ; Kumar, Ashok ; Lodhi, Neelesh ; Singh, Sachchidanand (2012) Large scale magnetic fields and response of dayside Venus ionosphere Planetary and Space Science, 63–64 . pp. 24-35. ISSN 0032-0633

Haider, Syed Aftab ; Mahajan, Kushal Kumar ; Kallio, Esa Jukka (2011) Mars ionosphere: a review of experimental results and modeling studies Reviews of Geophysics, 49 . RG4001_1-RG4001_37. ISSN 8755-1209

Mahajan, K. K. ; Lodhi, N. K. (2010) Ionospheres of inner and outer planets: Similarities and differences Journal of Applied Physics, 1 . pp. 1-11. ISSN 0021-8979

Mahajan, K. K. ; Lodhi, N. K. ; Upadhyaya, A. K. (2010) Observations of X-ray and EUV fluxes during X-class solar flares and response of upper ionosphere Journal of Geophysical Research, 115 . A12330_1-A12330_10. ISSN 0148-0227

Mahajan, K. K. ; Lodhi, Neelesh K. ; Singh, Sachchidanand (2010) Observations of electron density and electron temperature during large scale magnetic fields in the dayside Venus ionosphere and lesson for Mars Geophysical Research Letters, 37 . L06202_1-_L06202_5. ISSN 0094-8276

Mahajan, K. K. ; Lodhi, N. K. ; Singh, S. (2009) Ionospheric effects of solar flares at Mars Geophysical Research Letters, 36 . L15207-L15207. ISSN 0094-8276

Mahajan, K. K. ; Kumar, Ashok ; Lodhi, Neelesh K. (2007) Long-term trends in the upper atmosphere and ionosphere: Models and observations Indian Journal of Radio and Space Physics, 36 (6). pp. 543-555. ISSN 0367-8393

Kumar, Ashok ; Lodhi, Neelesh K. ; Mahajan, K. K. (2007) Near-terminator Martian ionosphere during sunspot cycle 23 from Mars Global Surveyor radio science measurements Indian Journal of Radio and Space Physics, 36 (6). pp. 457-465. ISSN 0367-8393

Mahajan, K. K. ; Singh, Sachchidanand ; Kumar, Ashok ; Raghuvanshi, Saroj ; Haider, S. A. (2007) Mars Global Surveyor radio science electron density profiles: some anomalous features in the Martian ionosphere Journal of Geophysical Research, 112 (E10). E10006_1-E10006_11. ISSN 0148-0227

Mahajan, K. K. ; Dwivedi, A. K. (2005) Solar EUV flux during sunspot cycles 21, 22 and 23- Correlation with proxy indices and real time prediction Indian Journal of Radio and Space Physics, 34 . pp. 153-160. ISSN 0367-8393

Choudhary, R. K. ; St -Maurice, J.-P. ; Kagan, L. M. ; Mahajan, K. K. (2005) Quasi-periodic backscatters from the E region at Gadanki: Evidence for Kelvin-Helmholtz billows in the lower thermosphere? Journal of Geophysical Research, 110 . A08303_1-A08303_19. ISSN 0148-0227

Mahajan, K. K. ; Dwivedi, A. K. (2004) Ionospheres of Venus and Mars: a comparative study Advances in Space Research, 33 (2). pp. 145-151. ISSN 0273-1177

Choudhary, R. K. ; St.-Maurice, J. P. ; Mahajan, K. K. (2004) Observation of coherent echoes with narrow spectra near 150 km altitude during daytime away from the dip equator Geophysical Research Letters, 31 . L19801_1-L19801_5. ISSN 0094-8276

Sethi, N. K. ; Pandey, V. K. ; Mahajan, K. K. (2004) Seasonal and solar activity changes of electron temperature in the F-region and topside ionosphere Advances in Space Research, 33 (6). pp. 970-974. ISSN 0273-1177

Pandey, V. K. ; Sethi, N. K. ; Mahajan, K. K. (2004) Topside electron temperature models for low and high solar activity Advances in Space Research, 33 (6). pp. 959-962. ISSN 0273-1177

Pandey, V. K. ; Sethi, N. K. ; Mahajan, K. K. (2003) Dependence of F2- peak height on solar activity: A study with incoherent scatter measurements Advances in Space Research, 31 (3). pp. 543-548. ISSN 0273-1177

Dwivedi, A. K. ; Mahajan, K. K. (2003) Plasma distribution at Venus and ionospheric magnetic fields: Implication for Mars Geophysical Research Letters, 30 (24). pp. 2284-2288. ISSN 0094-8276

Mahajan, K. K. ; Dwivedi, A. K. (2002) Ionospheres and atmosphere of non-magnetic planets and solar wind interaction: Part I - Venus Indian Journal of Radio and Space Physics, 31 . pp. 349-356. ISSN 0367-8393

Kar, J. ; Choudhary, R. K. ; Mahajan, K. K. (2002) Revisiting the stratospheric fountain hypothesis using UARS/HALOE data Advances in Space Research, 29 (11). pp. 1725-1729. ISSN 0273-1177

Sethi, N. K. ; Goel, M. K. ; Mahajan, K. K. (2002) Solar Cycle variations of ƒoF2 from IGY to 1990 Annales Geophysicae, 20 . pp. 1677-1685. ISSN 0992-7689

Sethi, N. K. ; Mahajan, K. K. (2002) The bottomside parameters B0, B1 obtained from incoherent scatter measurements during a solar maximum and their comparisons with the IRI-2001 model Annales de Geophysique, 20 (6). pp. 817-822. ISSN 0003-4029

Sethi, N. K. ; Pandey, V. K. ; Mahajan, K. K. (2001) Comparative study of TEC with IRI model for solar minimum period at low latitude Advances in Space Research, 27 (1). pp. 45-48. ISSN 0273-1177

Gulyaeva, T. L. ; Mahajan, K. K. (2001) Dynamic boundaries of the ionosphere variability Advances in Space Research, 27 (1). pp. 91-94. ISSN 0273-1177

Mahajan, K. K. ; Sethi, N. K. (2001) Empirical models of parameters B0, B1 from Arecibo radar measurements Advances in Space Research, 27 (1). pp. 17-20. ISSN 0273-1177

Pandey, V. K. ; Sethi, N. K. ; Mahajan, K. K. (2001) Equivalent slab thickness and its variability: a study with incoherent scatter measurements Advances in Space Research, 27 (1). pp. 60-64. ISSN 0273-1177

Mahajan, K. K. ; Oyama, K. I. (2001) The central nightside venus ionosphere: dependence of ion concentration and plasma holes location on solar wind dynamic pressure Advances in Space Research, 27 (11). pp. 1863-1868. ISSN 0273-1177

Mahajan, K. K. ; Oyama, K.-I. (2000) The ionosphere and upper atmosphere of Venus: A review Proceedings of the Indian National Science Academy - Part A: Physical Sciences, 66A (5). pp. 483-498. ISSN 0370-0046

Sethi, N. K. ; Mahajan, K. K. ; Pandey, V. K. (2000) Bottomside parameters B0,B1 from Arecibo incoherent scatter radar measurements Advances in Space Research, 25 (1). pp. 97-100. ISSN 0273-1177

Pandey, V. K. ; Sethi, N. K. ; Mahajan, K. K. (2000) Comparing IRI E-region peak height (hmE) with incoherent scatter data Advances in Space Research, 25 (1). pp. 65-68. ISSN 0273-1177

Singh, S. ; Mahajan, K. K. ; Choudhary, R. K. ; Nagpal, O. P. (1999) Detection of Kelvin - Helmholtz instability with the Indian mesosphere-stratosphere-troposphere radar: A case study Journal of Geophysical Research, 104 (D4). pp. 3937-3945. ISSN 0148-0227

Choudhary, R. K. ; Mahajan, K. K. (1999) Tropical E region field aligned irregularities: Simultaneous observations of continuous and quasiperiodic echoes Journal of Geophysical Research, 104 (A2). pp. 2613-2619. ISSN 0148-0227

Mahajan, K. K. (1998) Planetary ionospheres: the venus energetics Proceedings of the Indian National Science Academy - Part A: Physical Sciences, 64A (3). pp. 377-388. ISSN 0370-0046

Upadhyay, H. O. ; Mahajan, K. K. (1998) Atmospheric greenhouse effect and ionospheric trends Geophysical Research Letters, 25 (17). pp. 3375-3378. ISSN 0094-8276

Kar, J. ; Mahajan, K. K. (1998) Evidence of transport in water vapor profiles at mid latitudes from Stratospheric Aerosol and Gas Experiment(SAGE II) measurements Journal of Geophysical Research, 103 (D23). pp. 31057-31065. ISSN 0148-0227

Ghosh, S. ; Mahajan, K. K. (1998) Mars water abundance: An estimate from D/H ratio in SNC meteorites Journal of Geophysical Research, 103 (E3). pp. 5919-5927. ISSN 0148-0227

Mahajan, K. K. ; Upadhyay, H. O. ; Hoegy, W. R. ; Pesnell, W. D. ; Brace, L. H. ; Sethi, N. K. (1998) Pioneer Venus orbiter measurements fo solar EUV flux during solar cycle 21 and 22 Solar Physics, 177 (1-2). pp. 203-216. ISSN 0038-0938

Gulyaeva, T. L. ; Aggarawal, S. ; Mahajan, K. K. ; Shastri, S. (1998) Variability of foF2 at low and middle latitudes Advances in Space Research, 22 (6). pp. 847-850. ISSN 0273-1177

Mahajan, K. K. ; Shastri, S. (1997) Has the ionospheric F2 region changed permanently during the last thirty years? Advances in Space Research, 20 (11). pp. 2157-2160. ISSN 0273-1177

Mahajan, K. K. ; Aggrawal, S. ; Sethi, N. K. ; Kohli, R. (1997) On the saturation of foF2 for R12 above 150 Advances in Space Research, 20 (9). pp. 1761-1764. ISSN 0273-1177

Pandey, V. K. ; Sethi, N. K. ; Mahajan, K. K. (1997) Topside electron density distribution during sunrise and sunset conditions at Arecibo: Comparison with IRI Advances in Space Research, 20 (9). pp. 1765-1768. ISSN 0273-1177

Mahajan, K. K. ; Hoegy, W. R. ; Pesnell, W. D. ; Brace, L. H. ; Sethi, N. K. (1997) A comparison of solar EUV flux from Langmuir probe photoelectron measurements on the Pioneer Venus Orbiter with other solar activity indicators Advances in Space Research, 20 (2). pp. 187-190. ISSN 0273-1177

Mahajan, K. K. ; Sethi, N. K. ; Pandey, V. K. (1997) The diurnal variation of E-F valley parameters from incoherent scatter measurements at Arecibo Advances in Space Research, 20 (9). pp. 1781-1784. ISSN 0273-1177

Miller, N. J. ; Grebowsky, J. M. ; Hoegy, W. R. ; Mahajan, K. K. (1996) A comparison of ionization densities determined from spacecraft and incoherent scatter radar data Journal of Atmospheric and Terrestrial Physics, 58 (15). pp. 1735-1740. ISSN 0021-9169

Pandey, V. K. ; Sethi, N. K. ; Mahajan, K. K. (1996) Comparison of IRI topside electron density profile with Arecibo incoherent scatter measurements Advances in Space Research, 18 (6). pp. 289-292. ISSN 0273-1177

Mahajan , K. K. (1996) Contributions of incoherent-scatter radar measurements at Arecibo for the improvement of IRI Advances in Space Research, 18 (6). pp. 131-140. ISSN 0273-1177

Choudhary, R. K. ; Mahajan, K. K. ; Singh, S. ; Kumar, K. ; Anandan, V. K. (1996) First VHF radar observations of tropical latitude E-region field aligned irregularities Geophysical Research Letters, 23 (25). pp. 3683-3686. ISSN 0094-8276

Gulyaeva, T. L. ; Mahajan, K. K. ; Sethi, N. K. (1996) Modification of IRI half-density height option for low latitudes Advances in Space Research, 18 (6). pp. 149-152. ISSN 0273-1177

Kar, J. ; Mahajan, K.K. ; Kohli, R. (1996) On the outflow of O2+ ions at Mars Journal of Geophysical Research, 101 (E5). 12,747-12,752. ISSN 0148-0227

Upadhyay, H. O. ; Mahajan, K. K. (1996) Response of Venus ions to solar wind dynamic pressure Earth, Moon, and Planets, 74 (3). pp. 215-222. ISSN 0167-9295

Mahajan, K. ; Upadhyay, H. ; Ghosh, S. (1996) A comparative study of electron cooling rates in the Venus ionosphere during magnetized and unmagnetized conditions Journal of Geophysical Research, 101 (E4). pp. 9253-9259. ISSN 0148-0227

Mahajan, K. K. ; Kar, J. ; Kohli, R. (1995) The origin of molecular ions in the Martian magnetosphere Advances in Space Research, 15 (4). pp. 17-20. ISSN 0273-1177

Mahajan, K. K. ; Kohli, R. ; Sethi, N. K. ; Pandey, V. K. (1995) Variability of the F-region parameter h0.5 Advances in Space Research, 15 (2). pp. 51-60. ISSN 0273-1177

Ghosh, S. ; Mahajan, K. (1995) Evidence of upward H+ flow in the Venus dayside ionosphere Journal of Geophysical Research, 100 (A11). pp. 21317-21322. ISSN 0148-0227

Ghosh, Suchita ; Mahajan, K. K. ; Grebowsky, J. M. ; Nath, N. (1995) Morphology of O++ ions and their maintenance in the nightside Venus ionosphere Journal of Geophysical Research, 100 (A12). pp. 23983-23991. ISSN 0148-0227

Mahajan, K. K. (1995) Planetary ionospheres: the Venus ionopause Indian Journal of Radio and Space Physics, 24 (5). 269 - 279. ISSN 0367-8393

Mahajan, K. K. ; Pandey, V. K. ; Goel, M. K. ; Sethi, N. K. ; Kohli, R. (1994) Incoherent-scatter measurements of E-F valley and comparisons with theoretical and empirical models Advances in Space Research, 14 (12). pp. 75-78. ISSN 0273-1177

Kumar, K. ; Singh, S. ; Mahajan, K. K. ; Srivastava, S. K. (1994) Short period waves in the vertical wind using Indian MST radar Indian Journal of Radio and Space Physics, 23 . pp. 21-29. ISSN 0367-8393

Mahajan, K. K. ; Ghosh, S. ; Paul, R. ; Hoegy, W. R. (1994) Variability of dayside electron temperature at Venus Geophysical Research Letters, 21 (1). pp. 77-80. ISSN 0094-8276

Kumar, K. ; Singh, S. ; Mahajan, K. K. ; Sethi, N. K. (1994) A study of tropopause and stable layers in the lower atmosphere from the Indian MST radar Indian Journal of Radio and Space Physics, 23 . pp. 71-74. ISSN 0367-8393

Singh, S. ; Kumar, K. ; Choudhary, R. K. ; Mahajan, K. K. (1994) A study of wind velocity in lower troposphere using the Indian MST radar Indian Journal of Radio and Space Physics, 23 (1). pp. 30-35. ISSN 0367-8393

Ghosh, S. ; Mahajan, K. K. ; Brace, L. H. (1993) Effect of solar EUV variation on the nightside ionosphere of Venus observed on Langmuir probe at solar maximum Journal of Geophysical Research, 98 (A11). pp. 19293-19300. ISSN 0148-0227

Grebowsky, J. M. ; Kasprzak, W. T. ; Hartle, R. E. ; Mahajan, K. K. ; Wagner, T. C. G. (1993) Superthermal ions detected in Venus dayside ionosheath ionopause and magnetic barrier regions Journal of Geophysical Research, 98 (E5). pp. 9055-9064. ISSN 0148-0227

Mahajan, K. K. ; Ghosh, S. ; Sethi, N. K. ; Kohli, R. (1992) Ionospheric evidence of hot oxygen in the upper atmosphere of Venus Geophysical Research Letters, 19 (16). pp. 1627-1629. ISSN 0094-8276

Hoegy, W. R. ; Mahajan, K. K. (1992) Solar EUV index for aeronomical studies at earth from Langmuir probe photoelectron measurement on the Pioneer Venus Orbiter Journal of Geophysical Research, 97 (A7). 10,525-10,537. ISSN 0148-0227

Kar, J. ; Mahajan, K. ; Ghosh, S. ; Brace, L. (1992) A reconsideration of the effects of terminator ionopause height on the nightward ion transport at venus Journal of Geophysical Research, 97 (A9). pp. 13899-13902. ISSN 0148-0227

Mahajan, K. K. (1991) Adding incoherent scatter mode to the Indian MST radar for upper atmospheric studies Indian Journal of Radio and Space Physics, 20 . pp. 388-395. ISSN 0367-8393

Kar, J. ; Paul, R. ; Kohli, R. ; Mahajan, K. K. ; Kasprzak, W. T. ; Niemann, H. B. (1991) On the response of exospheric temperature on venus to solar wind conditions Journal of Geophysical Research, 96 (A5). pp. 7901-7904. ISSN 0148-0227

Mahajan, K. K. ; Kar, J. (1990) A comparative study of Venus and Mars - Upper atmospheres, ionospheres and solar wind interactions Indian Journal of Radio and Space Physics, 19 . pp. 444-465. ISSN 0367-8393

Mahajan, K. K. ; Kohli, R. ; Pandey, V. K. ; Sethi, N. K. (1990) Information about the E-region valley from incoherent scatter measurements Advances in Space Research, 10 (8). pp. 17-20. ISSN 0273-1177

Mahajan, K. K. ; Mayr, H. G. (1990) Mars ionopause during solar minimum: A lesson from Venus Journal of Geophysical Research, 95 (A6). pp. 8265-8269. ISSN 0148-0227

Mahajan, K. K. ; Kasprzak, W. T. ; Brace, L. H. ; Niemann, H. B. ; Hoegy, W. R. (1990) Response of Venus exospheric temperature measured by neutral mass spectrometer to solar EUV flux measured by Langmuir probe on the Pioneer Venus orbiter Journal of Geophysical Research, 95 (A2). pp. 1091-1095. ISSN 0148-0227

Mahajan, K. K. ; Mayr, H. G. ; Brace, L. H. ; Cloutier, P. A. (1989) On the lower altitude limit of the Venusian ionopause Geophysical Research Letters, 16 (7). pp. 759-762. ISSN 0094-8276

Pandey, V. K. ; Mahajan, K. K. (1989) Role of lower thermospheric neutral concentration and F-2 region ion drifts in the peak electron densities Indian Journal of Radio and Space Physics, 18 . pp. 19-22. ISSN 0367-8393

Mahajan, K. K. ; Mayr, H. G. (1989) Venus ionopause during solar miminum Geophysical Research Letters, 16 . pp. 1477-1480. ISSN 0094-8276

Pandey, V. K. ; Mahajan, K. K. (1988) Vertical and horizontal wind variations in troposphere and lower stratosphere Indian Journal of Radio and Space Physics, 17 . pp. 93-97. ISSN 0367-8393

Mahajan, K. K. ; Kar, J. (1988) Planetary ionospheres Space Science Reviews, 47 (3-4). pp. 303-397. ISSN 0038-6308

Mahajan, K. K ; Paul, R. ; Kar, J. (1988) Response of ionospheric electron temperature to solar wind dynamic pressure from Pioneer Venus Indian Journal of Radio and Space Physics, 17 . pp. 50-52. ISSN 0367-8393

Pandey, V. K. ; Mahajan, K. K. (1987) Seasonal and solar activity changes of F-region electron density, electron temperature and protonospheric heat flux during the declining part of sunspot cycle 20 Indian Journal of Radio and Space Physics, 16 . pp. 251-256. ISSN 0367-8393

Mahajan, K. K. (1987) Ionospheres of outer planets Indian Journal of Radio and Space Physics, 16 . pp. 192-206. ISSN 0367-8393

Kar, J. ; Mahajan, K. K. ; SriLakshmi, M. V. (1987) Effects of large scale magnetic fields in the dayside ionosphere of Venus Advances in Space Research, 7 (12). pp. 111-114. ISSN 0273-1177

Kar, J. ; Mahajan, K. K. (1987) On the response of ionospheric magnetization to solar wind dynamic pressure from Pioneer Venus measurements Geophysical Research Letters, 14 (5). pp. 507-510. ISSN 0094-8276

Mahajan, K. K. ; Kohli, R. (1987) Search for a thickness parameter for the bottomside ionospheric F-region from incoherent-scatter electron-density profiles Advances in Space Research, 7 (6). pp. 57-60. ISSN 0273-1177

Kar, Jayanta ; Mahajan, K. K. (1986) Heating by Alfven wave dissipation in the Jovian thermosphere Journal of Geophysical Research, 46 (A6). pp. 7101-7104. ISSN 0148-0227

Kar, J. ; Mahajan, K. K. ; Srilakshmi, M. V. ; Kohli , R. (1986) Possible effects of solar flares on the ionosphere of venus from pioneer venus orbiter measurements Journal of Geophysical Research, 91 (A8). pp. 8986-8992. ISSN 0148-0227

Mahajan, K. K. ; Kar, J. ; Srilakshmi, M. V. (1986) Saturn's ionosphere: further evidence of equatorial anomaly Indian Journal of Radio and Space Physics, 15 (2). 61 - 62. ISSN 0367-8393

Mahajan, K. K. ; Kar, J. ; Srilakshmi, M. V. (1985) Saturn's ionosphere: some evidence on equatorial anomaly Indian Journal of Radio and Space Physics, 14 (6). 143 - 146. ISSN 0367-8393

Pandey, V. K. ; Mahajan, K. K. (1985) Solar activity control of F2 region electron temperature from incoherent scatter measurements at Millstone Hill Indian Journal of Radio and Space Physics, 14 . pp. 159-161. ISSN 0367-8393

Pandey, V. K. ; Mahajan, K. K. ; Jain, V. C. ; Kohli, J. (1984) Study of TEC and equivalent slab thickness and their relationship with ion drifts and ionospheric temperatures Indian Journal of Radio and Space Physics, 13 . pp. 116-118. ISSN 0367-8393

Pandey, V. K. ; Mahajan, K. K. ; Jain, V. C. (1984) An improved empirical model for electron temperature in the F-2 region Indian Journal of Radio and Space Physics, 13 . pp. 42-47. ISSN 0367-8393

Pandey, V. K. ; Mahajan, K. K. (1984) Comparison of various empirical models of electron temperature with experimental measurements during low solar activity Advances in Space Research, 4 (1). pp. 97-99. ISSN 0273-1177

Mahajan, K. K. ; Pandey, V. K. ; Jain, V. C. (1983) Relationship between electron density and electron temperature as a function of solar activity Advances in Space Research, 2 (10). 247- 249. ISSN 0273-1177

Mahajan, K. K. ; Jain, V. C. ; Kohli, R. (1982) Ion-neutral collision frequency variations in the lower thermosphere from incoherent scatter measurements Indian Journal of Radio and Space Physics, 11 . pp. 225-228. ISSN 0367-8393

Mahajan, K. K. (1982) Ionosphere and upper atmosphere of Venus Indian Journal of Radio and Space Physics, 10 . pp. 211-222. ISSN 0367-8393

Pandey, V. K. ; Mahajan, K. K. (1981) Electron temperature models for the F-region and topside ionosphere Indian Journal of Radio and Space Physics, 10 . pp. 85-94. ISSN 0367-8393

Mahajan, K. K. (1981) Equatorial anomaly in the Jovian ionosphere Geophysical Research Letters, 8 (1). pp. 66-68. ISSN 0094-8276

Mahajan, K. K. (1981) Experimental results on the upper atmospheres and ionospheres of Venus, Mars, and Jupiter Proceedings of the Indian National Science Academy - Part A: Physical Sciences, 47A (Suppl.2). pp. 124-145. ISSN 0370-0046

Jain, A. R. ; Rao, B. C. N. ; Mahajan, K. K. (1980) Design study of an incoherent scatter radar for equatorial aeronomy COPSPAR Symposium series . pp. 283-296.

Mahajan, K. K. ; Pandey, V. K. (1980) Models of electron temperature in the topside ionosphere for low and medium solar activity conditions Journal of Geophysical Research, 85 (A1). pp. 213-216. ISSN 0148-0227

Jain, A. R. ; Mahajan, K. K. (1979) On the cause of day-to-day variability in the F-region electron concentration Indian Journal of Radio and Space Physics, 8 . pp. 119-121. ISSN 0367-8393

Mahajan, K. K. ; Pandey, V. K. (1979) Solar activity changes in the electron temperature at 1000 km altitude from the Langmuir probe measurements on ISIS-1 and Explorer-22 satellites Journal of Geophysical Research, 84 (A10). pp. 5885-5889. ISSN 0148-0227

Mahajan, K. K. (1978) Electron concentration profiles in the E- and F-region during sunrise and sunset Indian Journal of Radio and Space Physics, 7 . pp. 132-134. ISSN 0367-8393

Mahajan, K. K. ; Pandey, V. K. (1978) Electron temperature and concentration in the plasmasphere at an altitude of 3000km from Isis-1 Langmuir probe measurements Indian Journal of Radio and Space Physics, 7 . pp. 305-310. ISSN 0367-8393

Mahajan , K. K. (1977) Models of electron temperature in the ionospheric F-region using electron density height profiles Journal of Atmospheric and Terrestrial Physics, 39 (5). pp. 637-639. ISSN 0021-9169

Mahajan, K. K. (1977) Semiannual effect in the neutral composition at 120 km altitude Space Research Journal, 17 . pp. 309-311. ISSN 1819-3382

Mahajan, K. K. ; Saxena, O. P. (1976) Continuous measurements of nighttime electron concentration profiles and estimation of neutral wind velocities at Arecibo Journal of Geophysical Research, 81 . pp. 3165-3170. ISSN 0148-0227

Pandey, V. K. ; Mahajan, K. K. (1975) Latitudinal variation of H/+/ flow velocity from Alouette-2 topside sounder profiles Indian Journal of Radio and Space Physics, 4 . pp. 190-193. ISSN 0367-8393

Mahajan, K. K. ; Saxena, O. P. (1975) Seasonal variation of neutral composition at low and mid latitudes from bottomside electron density profiles Indian Journal of Radio and Space Physics, 4 . pp. 194-198. ISSN 0367-8393

Kumari, S. ; Mahajan, K. K. (1974) On the determination of electron temperature from Riometer measurements Indian Journal of Radio and Space Physics, 3 . pp. 172-180. ISSN 0367-8393

Mahajan, K. K. ; Pandey, V. K. (1974) Estimation of H+ fluxes in the polar regions Space Research Journal, 14 . pp. 347-352. ISSN 1819-3382

Pandey, V. K. ; Mahajan, K. K. (1973) Latitudinal distribution of electron concentration from the Alouette-II topside sounder Indian Journal of Radio and Space Physics, 2 . pp. 134-138. ISSN 0367-8393

Mahajan, K. K. (1973) E-region electron temperature measurements: a review Indian Journal of Radio and Space Physics, 2 (1). pp. 1-21. ISSN 0367-8393

Mayr, H. G. ; Fontheim, E. G. ; Mahajan, K. K. (1973) Effect of modified thermal conductivity on the temperature distribution in the protonosphere Annales de Geophysique, 29 . pp. 21-24. ISSN 0003-4029

Mahajan, K. K. ; Kumari, S. (1973) Neutral composition and its variations in the lower thermosphere Space research XIII; Proceedings of the Fifteenth Plenary Meeting, Madrid, Spain . pp. 299-305.

Mahajan, K. K. ; Kumari, S. (1972) Electron cooling in the F-2 region at low and mid latitudes Indian Journal of Radio and Space Physics, 1 . pp. 211-213. ISSN 0367-8393

Kumari, S. ; Mahajan, K. K. (1971) Electron temperature dependence of F-region absorption Journal of Atmospheric and Terrestrial Physics, 33 (8). pp. 1277-1279. ISSN 0021-9169

Kumari, S. ; Mahajan, K. K. ; Mitra, A. P. (1971) Calculation of ionosphere absorption Part I - Contributions from different regions and effects of solar activity Indian Journal of Pure and Applied Physics, 9 . pp. 183-186. ISSN 0019-5596

Mahajan, K. K. ; Saxena, O. P. (1971) Estimation of neutral atmospheric temperature from charged particle measurements in the topside ionosphere Indian Journal of Pure & Applied Physics, 9 . pp. 516-518. ISSN 0019-5596

Mahajan, K. K. (1971) Ionospheric estimates of atomic oxygen concentration from charged particle measurements Journal of Geophysical Research, 76 (19). pp. 4621-4629. ISSN 0148-0227

Mayr, H. G. ; Mahajan, K. K. (1971) Seasonal Variation in the F2 Region Journal of Geophysical Research, 75 (4). pp. 1017-1027. ISSN 0148-0227

Brace, L. H. ; Mayr, H. G. ; Mahajan, K. K. (1970) A polar maximum of electron concentration at 1000 km altitude Journal of Atmospheric and Terrestrial Physics, 32 (12). pp. 1945-1957. ISSN 0021-9169

Mahajan, K. K. (1969) Diurnal variation of the ion temperature Journal of Atmospheric and Terrestrial Physics, 31 (1). pp. 93-101. ISSN 0021-9169

Mahajan, K. K. ; Brace, L. H. (1969) Latitudinal observations of the thermal balance in the nighttime protonosphere Journal of Geophysical Research, 74 (21). pp. 5099-5112. ISSN 0148-0227

Brace, L. H. ; Carlson, H. C. ; Mahajan, K. K. (1969) Radar backscatter and rocket probe measurements of electron temperature above Arecibo Journal of Geophysical Research, 74 (7). pp. 1883-1885. ISSN 0148-0227

Mahajan, K. K. ; Rao, P. B. ; Prasad, S. S. (1968) Incoherent back-scatter study of electron content and equivalent slab thickness Journal of Geophysical Research, 73 (7). pp. 2477-2486. ISSN 0148-0227

Mahajan, K. K. (1967) 10.7 cm-Solar radio flux and ionospheric temperatures Journal of Atmospheric and Terrestrial Physics, 29 (9). pp. 1153-1158. ISSN 0021-9169

Mahajan, K. K. (1967) Extent of thermal non-equilibrium in the ionosphere Journal of Atmospheric and Terrestrial Physics, 29 (9). pp. 1137-1151. ISSN 0021-9169

Mitra, A. P. ; Narasinga Rao, B. C. ; Mahajan, K. K. (1967) Determination of loss coefficient and vertical transport velocity in the ionospheric F-region Journal of Atmospheric and Terrestrial Physics, 29 (1). pp. 43-59. ISSN 0021-9169

Mahajan, K. K (1967) F-region effects following two severe magnetic storms over Delhi Journal of Atmospheric and Terrestrial Physics, 29 (1). pp. 61-71. ISSN 0021-9169

Saha, A. K. ; Mahajan, K. K. (1966) Ionospheric effects of nuclear explosions: High altitude explosions Indian Journal of Pure & Applied Physics, 4 . pp. 117-123. ISSN 0019-5596

Saha, A. K. ; Mahajan, K. K. (1965) Ionospheric effects of nuclear explosions Indian Journal of Pure & Applied Physics, 3 . pp. 433-444. ISSN 0019-5596

Saha, A. K. ; Mahajan, K. K. (1964) D- and F-region effects on cosmic radio noise absorption following nuclear detonations Journal of Atmospheric and Terrestrial Physics, 26 (5). pp. 618-624. ISSN 0021-9169

Mitra, A. P. ; Narasinga Rao, B. C. ; Mahajan, K. K. (1964) A new method for estimating loss and drift terms in the ionospheric F-region Journal of Atmosphric and Terretrial Physics, 26 (4). pp. 525-530. ISSN 0021-9169

Saha, A. K. ; Karabin, Mirjana ; Mahajan, K. K. (1963) Ionospheric effects following distant nuclear detonations Journal of Atmosphric and Terretrial Physics, 25 (4). pp. 212-218. ISSN 0021-9169

Saha, A. K. ; Mahajan, K. K. (1963) Ionospheric effects of nuclear explosions Journal of Scientific & Industrial Research, 22 . pp. 235-236. ISSN 0022-4456

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