40.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.3k papers
- Panjab UniversityIN2.1k papers
- Korea UniversityKR1.9k papers
- Sungkyunkwan UniversityKR1.9k papers
- Charles UniversityCZ1.9k papers
- Princeton UniversityUS1.9k papers
- Institute of High Energy PhysicsCN1.8k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.8k papers
- National Central UniversityTW1.8k papers
- Kyungpook National UniversityKR1.8k papers
- University of Maryland, College ParkUS1.8k papers
- University of California, RiversideUS1.8k papers
22 papers · 2 filters
Rapid dissipation of magnetic fields due to Hall current
S. I. Vainshtein, S. M. Chitre, A. V. Olinto
We propose a mechanism for the fast dissipation of magnetic fields which is effective in a stratified medium where ion motions can be neglected. In such a medium, the field is froz…
Radio Ranging Techniques to test Relativistic Gravitation
R. Cowsik
It is suggested that modern techniques of radio ranging when applied to study the motion of the Moon, can improve the accuracy of tests of relativistic gravitation obtained with cu…
Effect of asymmetry in peak profiles on solar oscillation frequencies
Sarbani Basu, H. M. Antia
Most helioseismic analyses are based on solar oscillations frequencies obtained by fitting symmetric peak profiles to the power spectra. However, it has now been demonstrated that…
An ultra-soft X-ray source (RX 215319-1514) and discovery of a narrow line Seyfert 1 galaxy
Kulinder Pal Singh, Laurence R. Jones
Two optical candidates - a galaxy and a star, are found within the error circle of the X-ray source position of an ultra-soft X-ray source discovered with ROSAT. Optical spectrosco…
Efficient absolute aspect determination of a balloon borne far infrared telescope using a solid state optical photometer
M. V. Naik, S. L. D'Costa, S. K. Ghosh +3
The observational and operational efficiency of the TIFR 1 meter balloon borne far infrared telescope has been improved by incorporating a multielement solid state optical photomet…
Electron Capture Rates of Mid-fp Shell Nuclei for Supernova and Stellar Evolution
S. Chakravarti, K. Kar, A. Ray +1
A detailed model is constructed for the calculation of electron capture rates of some fp-shell nuclei for situations prevailing in pre-supernova and collapse phases of the evolutio…
New surveys of UBV photometry and absolute proper motions at intermediate latitude
D. K. Ojha, O. Bienayme, V. Mohan +1
A photometric and proper motion survey has been obtained in 2 directions at intermediate latitude: (, ; ,$δ_{2000}=+49^\circ53'27…
Self-similar collapse and the structure of dark matter halos: A fluid approach
Kandaswamy Subramanian
We explore the dynamical restrictions on the structure of dark matter halos through a study of cosmological self-similar gravitational collapse solutions. A fluid approach to the c…
The structure of dark matter halos in hierarchical clustering theories
Kandaswamy Subramanian, Renyue Cen, Jeremiah P. Ostriker
During hierarchical clustering, smaller masses generally collapse earlier than larger masses and so are denser on the average. The core of a small mass halo could be dense enough t…
A Study of the X-Ray Emission of Magnetic Cataclysmic Variable Ae Aquarii
Chul-Sung Choi, Tadayasu Dotani, P. C. Agrawal
We report results from analysis of the X-ray observations of AE Aqr, made with Ginga in June 1988 and with ASCA in October 1995. Pulsations are detected clearly with a sinusoidal p…
Infrared emission from interstellar dust cloud with two embedded sources: IRAS 19181+1349
A. D. Karnik, S. K. Ghosh
Mid and far infrared maps of many Galactic star forming regions show multiple peaks in close proximity, implying more than one embedded energy sources. With the aim of understandin…
High Resolution X-ray Imaging Observations of two low luminosity Seyfert Galaxies
Kulinder Pal Singh
An extended component of X-ray emission has been detected in Seyfert galaxies - NGC 1365 and NGC 4051, using the ROSAT HRI. Its size is about 2 kpc and it contains 56% +- 8% of the…
The structure of black hole magnetospheres. I. Schwarzschild black holes
Pranab Ghosh
We introduce a multipolar scheme for describing the structure of stationary, axisymmetric, force-free black-hole magnetospheres in the ``3+1'' formalism. We focus here on Schwarzsc…
Understanding the Spectral Energy Distributions of the Galactic Star Forming Regions IRAS 18314-0720, 18355-0532 & 18316-0602
Bhaswati Mookerjea, S. K. Ghosh
Embedded Young Stellar Objects (YSO) in dense interstellar clouds is treated self-consistently to understand their spectral energy distributions (SED). Radiative transfer calculati…
Large scale flows in the solar interior: Effect of asymmetry in peak profiles
Sarbani Basu, H. M. Antia
Ring diagram analysis can be used to study large scale velocity fields in the outer part of the solar convection zone. All previous works assume that the peak profiles in the solar…
Limits on the proton-proton reaction cross-section from helioseismology
H. M. Antia, S. M. Chitre
Primary inversions of solar oscillation frequencies coupled with the equations of thermal equilibrium and other input physics, enable us to infer the temperature and hydrogen abund…
Far Infrared Observations of the Galactic Star Forming Regions associated with IRAS 00338+6312 & RAFGL 5111
B. Mookerjea, S. K. Ghosh, A. D. Karnik +3
Two Galactic star forming regions, one in a very early phase of evolution and another evolved one, associated with the IRAS sources 00338+6312 and 03595+5110 (RAFGL 5111) respectiv…
Dust Properties of NGC4753
G. C. Dewangan, K. P. Singh, P. N. Bhat
We report BVR surface photometry of a lenticular galaxy, NGC4753 with prominent dust lanes. We have used the multicolor broadband photometry to study dust-extinction as a function…
Collimation of extragalactic radio jets in compact steep spectrum and larger sources
S. Jeyakumar, D. J. Saikia
We study the collimation of radio jets in the high-luminosity Fanaroff-Riley class II sources by examining the dependence of the sizes of hotspots and knots in the radio jets on th…
Thoughts on galactic magnetism
Kandaswamy Subramanian
Magnetic fields correlated on several kiloparsec scales are seen in spiral galaxies. Their origin could be due to amplification of a small seed field by a turbulent galactic dynamo…
Simulation Studies on Arrival Time Distributions of Cherenkov Photons in Extensive Air Showers
V. R. Chitnis, P. N. Bhat
Atmospheric Cherenkov technique is an established methodology to study TeV energy gamma rays. Here we carry out systematic monte carlo simulation studies of the timing information…
Different types of X-ray bursts from GRS 1915+105 and their origin
J. S. Yadav, A. R. Rao, P. C. Agrawal +3
We report the X-ray observations of the Galactic X-ray transient source GRS 1915+105 with the PPCs of the Indian X-ray Astronomy Experiment(IXAE) onboard the Indian satellite IRS-P…