dc.contributor.author |
Britto, R. J |
|
dc.contributor.author |
Acharya, B. S |
|
dc.contributor.author |
Chitnis, V. R |
|
dc.contributor.author |
Cowsik, R |
|
dc.contributor.author |
Dorji, N |
|
dc.contributor.author |
Duhan, S. K |
|
dc.contributor.author |
Gothe, K. S |
|
dc.contributor.author |
Kamath, P. U |
|
dc.contributor.author |
Mahesh, P. K |
|
dc.contributor.author |
Nagesh, B. K |
|
dc.contributor.author |
Naidu, A |
|
dc.contributor.author |
Parmar, N. K |
|
dc.contributor.author |
Prabhu, T. P |
|
dc.contributor.author |
Rao, S. K |
|
dc.contributor.author |
Saha, L |
|
dc.contributor.author |
Saleem, F |
|
dc.contributor.author |
Saxena, A. K |
|
dc.contributor.author |
Sharma, S. K |
|
dc.contributor.author |
Shukla, A |
|
dc.contributor.author |
Singh, B. B |
|
dc.contributor.author |
Srinivasan, R |
|
dc.contributor.author |
Srinivasulu, G |
|
dc.contributor.author |
Sudersanan, P. V |
|
dc.contributor.author |
Tsewang, D |
|
dc.contributor.author |
Upadhya, S. S |
|
dc.contributor.author |
Vishwanath, P. R |
|
dc.date.accessioned |
2009-12-10T09:54:11Z |
|
dc.date.available |
2009-12-10T09:54:11Z |
|
dc.date.issued |
2009-11 |
|
dc.identifier.citation |
Heydari-Malayeri, M., Reylé, C. and Samadi, R., eds., SF2A-2009: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, held 29 June - 4 July 2009 in Besançon, France, pp. 131 - 134 |
en |
dc.identifier.uri |
http://hdl.handle.net/2248/4936 |
|
dc.description |
Open Access |
|
dc.description.abstract |
We have observed Crab nebula using the recently commissioned wavefront sampling high alti-
tude (4270 m) array, HAGAR, at Hanle in the Ladakh region of the Himalayas. Regular source observations
have begun with the complete setup of 7 telescopes since Sept. 2008. HAGAR is the first array of atmo-
spheric Cherenkov telescopes established at a so high altitude and was designed to reach a relatively low
threshold with quite a low mirror area (31 m
2). Estimation of the sensitivity of the experiment is undergoing
using several hours of data from the direction of Crab nebula, the standard candle source of TeV gamma-ray
astronomy. Data were acquired using the On-source/Off-source mode and by comparing these sky regions
the strength of the gamma-ray signal could be estimated. Gamma-ray events arrive close to telescope axis
direction while the cosmic-ray background events arrive from the whole field of view. We discuss our anal-
ysis procedures for the estimate of arrival direction, estimate of gamma-ray flux from Crab nebula and the
sensitivity of the HAGAR system etc in this paper. Also preliminary results on blazars 1es2344+514 and
Mkn421 will be presented. |
en |
dc.language.iso |
en |
en |
dc.publisher |
Societe Francaise d’Astronomie et dAstrophysique |
en |
dc.relation.uri |
http://adsabs.harvard.edu/abs/2009sf2a.conf..131B |
|
dc.rights |
© Societe Francaise d’Astronomie et dAstrophysique |
en |
dc.subject |
Gamma-Ray Source Observations |
en |
dc.subject |
Crab Nebula |
en |
dc.subject |
HAGAR Telescope |
en |
dc.subject |
Relatively Low Threshold |
en |
dc.subject |
Gamma-Ray Signal |
en |
dc.subject |
Gamma-Ray Flux |
en |
dc.title |
Gamma-ray source observations with the HAGAR telescope system at Hanle in the Himalayas |
en |
dc.type |
Article |
en |