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Now showing items 61-80 of 210

Indian Institute of Astrophysics. Report for the year 1975 April 1 to 1976 March 31

Bappu, M. K. V (Royal Astronomical Society, 1977-09)
Kodaikanal Observatory. Report for the year ending 1967 December 31

Bappu, M. K. V (Royal Astronomical Society, 1969-03)
Reports on the progress of astronomy: Solar activity (sunspots, prominences)

Laurie, P. S; Bappu, M. K. V (Royal Astronomical Society, 1969-09)
Kodaikanal Observatory, Kodaikanal. Report for the year ending 1968 December 31

Bappu, M. K. V (Royal Astronomical Society, 1969-12)
Prominences in 1974

Bappu, M. K. V (Royal Astronomical Society, 1976-03)
Prominences in 1975

Bappu, M. K. V (Royal Astronomical Society, 1977-06)
Gravitational instability of interstellar magnetic clouds

Ghosh, K. K; Bhattacharyya, J. C (D. Reidel Publishing Co.,, 1985-12)

The gravitational instability of a nonrotating isothermal gaseous disk permeated by a uniform frozen-in magnetic field is investigated using a fourth-order perturbation technique. From the results it is found that the disk ...
Search for optical bursts from the gamma ray burst source GBS 0526-66

Seetha, S; Sreenivasaiah, K. V; Marar, T. M. K; Kasturirangan, K; Rao, U. R; Bhattacharyya, J. C (NASA/STI, 1985-08)

Attempts were made to detect optical bursts from the gamma-ray burst source GBS 0526-66 during Dec. 31, 1984 to Jan. 2, 1985 and Feb. 23 to Feb. 24, 1985, using the one meter reflector of the Kavalur Observatory. Jan. 1, ...
Structures in Saturn's Magnetosphere

Bhattacharyya, J. C (Indian Academy of Sciences, 1995-12)
New telescopes in India

Bhattacharyya, J. C (D. Reidel Publishing Co., 1986-01)

The review covers the description and present status of the two optical/infrared telescopes designed and presently near fabrication in India. The 234 cm aperture optical telescope expected to be installed at Kavalur shortly ...
High speed photometry of dwarf nova EX Hydrae

Sharma, D. P; Marar, T. M. K; Seetha, S; Kasturirangan, K; Rao, U. R; Bhattacharyya, J. C (INSDOC, 1983-08)

High speed optical photometric observations of the hard X-ray source EX Hya, carried out with the reflector of the Kevalur Observatory, are presented. The observations with time resolutions of 1 s or 2 s were made on four ...
The Intermediate Polar PQ GEM -- Status of Wet Observations of 1996

Marar, T. M. K; Seetha, S; Ashoka, B. N; Kasturirangan, K; Mahra, H. S; Bhattacharyya, J. C; Leibowitz, E. M; Hemar, S; Mendelson, H; Ibbetson, P. A; O'Donoghue, D; Buckley, D. A. H; Breger, M; Handler, G; Sperl, M; Serkowitsch, E; Moskalik, P; Zola, S; Pajdosz, G; Krzesinski, J; Silvotti, R; Vauclair, G; Dolez, N; Solheim, J. E; Pfeiffer, B; Kepler, S. O; Kanaan, A; Provencal, J; Kawaler, S. D; O'Brien, M. S; Nather, R. E; Winget, D. E; Kleinman, S; Nitta, A; Bradley, P. A; Guzik, J. A; Clemens, C; Sullivan, D. J; Jiang, X (Baltic Astronomy, 1998-03)

A summary of the results on PQ Gem based on WET observations conducted in February 1996 is presented. The 13.9 min spin period of the white dwarf in the system and the orbital side-band at 14.5 min have been detected ...
High Speed Photometry of SS Cygni after an Outburst

Seetha, S; Padmini, V. N; Marar, T. M. K; Kasturirangan, K; Rao, U. R; Bhattacharyya, J. C (Konkoly Observatory, 1985-12)
Measurement of vector magnetic fields. I - Theoretical approach to the instrumental polarisation of the Kodaikanal Solar Tower

Balasubramaniam, K. S; Venkatakrishnan, P; Bhattacharyya, J. C (D. Reidel Publishing Co., 1985-09)

The observations of Stokes line profiles require an accurate knowledge of the instrumental polarisation caused by optical components in the path of the light beam. In this context we present a theoretical approach to the ...
Obituary - Bappu, M. K

Bhattacharyya, J. C (Royal Astronomical Society, 1983-03)
Discovery of a flare star near Sirius

Sharma, D. P; Marar, T. M. K; Seetha, S; Shyla, K. S; Kasturirangan, K; Rao, U. R; Bhattacharyya, J. C; Rozario, M. J (D. Reidel Publishing Co., 1983-04)

The discovery of a flare star (R.A. (1950)=6/Suph43/Supm6/Sups.07, Decl.(1950)=–16°45'24") located about 6 arc min south of Sirius is reported. During photometric observations on the night of 13 January, 1982, using the ...
Photometric Observations of the X-Ray Dwarf Nova HL Canis Majoris

Seetha, S; Marar, T. M. K; Sharma, D. P; Kasturirangan, K; Rao, U. R; Bhattacharyya, J. C (INSDOC, 1983-08)

High speed optical photometric observations of the X-ray dwarf nova HL Canis Majoris (1E 0643-1648), discovered with the Einstein Observatory, are presented. Results of long term monitoring and attempts to detect photometric ...
Eclipse observations of coronal emission lines. I.[FeX]6374 A profiles at the eclipse of 16 February 1980

Singh, J; Bappu, M. K. V; Saxena, A. K (Indian Academy of Sciences, 1982-09)

Coronal spectra during the total solar eclipse of February 16, 1980, obtained in the 6374 A (forbidden Fe X) line using a multislit spectrograph are discussed. The dispersion of these spectra is 2.5 A/mm. The observed line ...
Emission band and continuum photometry of Comet West /1975n/. I - Heliocentric dependence of the flux in the emission bands and the continuum

Sivaraman, K. R; Babu, G. S. D; Bappu, M. K. V; Parthasarathy, M (Royal Astronomical Society, 1979-12)
Observations of Optical Emission from X-Per and SCO X-1

Sharma, P. D; Nagaraja, V. B; Marar, K. T. M; Bhattacharyya, J. C; Mohin, S (IUPAP, 1981)

High speed photometric observations of X-per, and SCO X-1 have been carried out during 1979-80 with the 102cm and 33cm telescope at the Kavalur observatory. Results from some of these observations are presented in this ...

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