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- Tata Institute of Fundamental ResearchIN268 papers
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15 papers · 1 filter
Magnetohydrodynamic instability in differentially rotating compressible flow
Mradul Sharma
Transport of angular momentum is one of the thrust areas of astrophysical flows. Instabilities and hence the turbulence generated by it has been invoked to understand its role in a…
Low frequency radio spectrum and spectral turnover of LS 5039
Sagar Godambe, Subir Bhattacharyya, Nilay Bhatt +1
LS 5039, a possible black hole x-ray binary, was recently observed with Giant Meterwave Radio Telescope. The observed spectrum presented here shows that the spectrum is inverted at…
A Two Zone Synchrotron Model for the Knots in the M87 Jet
S. Sahayanathan
The flux and the spectral index in X-ray energy band from the knots of M87 jet as observed by {\it{Chandra}} indicate a possible synchrotron origin but cannot be explained by simpl…
Very High Energy gamma-ray observations of Mrk 501 using TACTIC imaging gamma-ray telescope during 2005-06
S. V. Godambe, R. C. Rannot, P. Chandra +16
In this paper we report on the Markarian 501 results obtained during our TeV -ray observations from March 11 to May 12, 2005 and February 28 to May 7, 2006 for 112.5 hours with…
The TACTIC atmospheric Cherenkov Imaging telescope
R. Koul, A. K. Tickoo, S. K. Kaul +19
The TACTIC -ray telescope, equipped with a light collector of area 9.5m and a medium resolution imaging camera of 349-pixels, has been in operation at Mt.Abu, India si…
Very High Energy -ray and Near Infrared observations of 1ES2344+514 during 2004-05
S. V. Godambe, R. C. Rannot, K. S. Baliyan +20
We have observed the BL Lac object 1ES2344+514 (z = 0.044) in Very High Energy (VHE) gamma-ray and near-infrared wavelength bands with TACTIC and MIRO telescopes respectively. The…