Zobrazeno 1 - 10
of 535
pro vyhledávání: '"Kotwal S"'
Autor:
Godambe, S., Mankuzhiyil, N., Borwankar, C., Ghosal, B., Tolamatti, A., Pal, M., Chandra, P., Khurana, M., Pandey, P., Dar, Z. A., Godiyal, S., Hariharan, J., Anand, Keshav, Norlha, S., Sarkar, D., Thubstan, R., Venugopal, K., Pathania, A., Kotwal, S., Kumar, Raj, Bhatt, N., Chanchalani, K., Das, M., Singh, K. K., Gour, K. K., Kothari, M., Kumar, Nandan, Kumar, Naveen, Marandi, P., Kushwaha, C. P., Koul, M. K., Dorjey, P., Dorji, N., Chitnis, V. R., Rannot, R. C., Bhattacharyya, S., Chouhan, N., Dhar, V. K., Sharma, M., Yadav, K. K.
Publikováno v:
The Astrophysical Journal Letters, Volume 974, Number 2 (2024)
The radio galaxy NGC 1275, located at the central region of Perseus cluster, is a well-known very high-energy (VHE) gamma-ray emitter. The Major Atmospheric Cherenkov Experiment Telescope has detected two distinct episodes of VHE (E > 80 GeV) gamma-r
Externí odkaz:
http://arxiv.org/abs/2411.01823
Autor:
C., Borwankar, M., Sharma, J., Hariharan, K., Venugopal, S., Godambe, N., Mankuzhyil, P., Chandra, M., Khurana, A., Pathania, N., Chouhan, K., Dhar V., R., Thubstan, S., Norlha, Keshavananda, D., Sarkar, A., Dar Z., V., Kotwal S., S., Godiyal, P., Kushwaha C., K., Singh K., P., Das M., A., Tolamatti, B., Ghosal, K., Chanchalani, P., Pandey, N., Bhatt, S., Bhattcharyya, S., Sahayanathan, K., Koul M., P., Dorjey, N., Dorji, R., Chitnis V., K., Tickoo A., C., Rannot R., K, Yadav K.
Publikováno v:
Astroparticle Physics 159 (2024) 102960
The Major Atmospheric Cherenkov Experiment (MACE) is a large size (21m) Imaging Atmospheric Cherenkov Telescope (IACT) installed at an altitude of 4270m above sea level at Hanle, Ladakh in northern India. Here we report the detection of Very High Ene
Externí odkaz:
http://arxiv.org/abs/2404.01649
Autor:
HiGRO Collaboration, Bhatt, N, Bhattacharyya, S, Borwankar, C, Chanchalani, K, Chandra, P, Chitnis, V, Chouhan, N, Das, M P, Dhar, VK, Ghosal, B, Godambe, S, Godiyal, S, Gour, K K, Jayaraman, H, Khurana, M, Kothari, M, Kotwal, S, Koul, M K, Kumar, N, Kushwaha, C P, Mankuzhiyil, N, Marandi, P, Nand, K, Norlha, S, Sarkar, D, Sharma, M, Singh, K K, Thubstan, R, Tolamatti, A, Venugopal, K, Yadav, K K
MACE (Major Atmospheric Cherenkov Experiment), an imaging atmospheric Cherenkov telescope, has recently been installed by the HiGRO (Himalayan Gamma-Ray Observatory) collaboration at Hanle (32.8$^\circ$N, 78.9$^\circ$E, 4270m asl) in Ladakh region of
Externí odkaz:
http://arxiv.org/abs/2107.04297
Akademický článek
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Autor:
Chandra, P., Rannot, R. C., Yadav, K. K., Tickoo, A. K., Singh, K. K., Chanchalani, K., Kothari, M., Agarwal, N. K., Goyal, A., Goyal, H. C., Kotwal, S., Kumar, N., Marandi, P., Venugopal, K., Bhat, C. K., Bhatt, N., Bhattacharya, S., Borwankar, C., Chouhan, N., Dhar, V. K., Kaul, S. R., Koul, S. K., Koul, M. K., Koul, R., Mitra, A. K., Sahayanathan, S., Sharma, M.
We have observed the blazar Markarian 421 with the TACTIC $\gamma$-ray telescope at Mt. Abu, India, from 22 November 2009 to 16 May 2010 for 265 hours. Detailed analysis of the data so recorded revealed presence of a TeV $\gamma$-ray signal with a st
Externí odkaz:
http://arxiv.org/abs/1202.2984
Autor:
Yadav, K. K., Rannot, R. C., Chandra, P., Tickoo, A. K., Thoudam, S., Venugopal, K., Bhatt, N., Bhattacharyya, S., Chanchalani, K., Dhar, V. K., Godambe, S. V., Goyal, H. C., Kothari, M., Kotwal, S., Koul, M. K., Koul, R., Sahaynathan, S., Sharma, M.
Publikováno v:
J.Phys.G36:085201,2009
The BL Lac object H1426+428 ($z\equiv 0.129$) is an established source of TeV $\gamma$-rays and detections of these photons from this object also have important implications for estimating the Extragalactic Background Light (EBL) in addition to the u
Externí odkaz:
http://arxiv.org/abs/0905.3994
Autor:
Godambe, S. V., Rannot, R. C., Chandra, P., Yadav, K. K., Tickoo, A. K., Venugopal, K., Bhatt, N., Bhattacharyya, S., Chanchalani, K., Dhar, V. K., Goyal, H. C., Kaul, R. K., Kothari, M., Kotwal, S., Koul, M. K., Koul, R., Sahaynathan, B. S., Sharma, M., Thoudam, S.
Publikováno v:
J.Phys.G35:065202,2008
In this paper we report on the Markarian 501 results obtained during our TeV $\gamma$-ray observations from March 11 to May 12, 2005 and February 28 to May 7, 2006 for 112.5 hours with the TACTIC $\gamma$-ray telescope. During 2005 observations for 4
Externí odkaz:
http://arxiv.org/abs/0804.1473
Autor:
Koul, R., Tickoo, A. K., Kaul, S. K., Kaul, S. R., Kumar, N., Yadav, K. K., Bhatt, N., Venugopal, K., Goyal, H. C., Kothari, M., Chandra, P., Rannot, R. C., Dhar, V. K., Koul, M. K., Kaul, R. K., Kotwal, S., Chanchalani, K., Thoudam, S., Chouhan, N., Sharma, M., Bhattacharyya, S., Sahayanathan, S.
Publikováno v:
Nucl.Instrum.Meth.A578:548-564,2007
The TACTIC $\gamma$-ray telescope, equipped with a light collector of area $\sim$9.5m$^2$ and a medium resolution imaging camera of 349-pixels, has been in operation at Mt.Abu, India since 2001. This paper describes the main features of its various s
Externí odkaz:
http://arxiv.org/abs/0706.2055
Autor:
Godambe, S. V., Rannot, R. C., Baliyan, K. S., Tickoo, A. K., Thoudam, S., Dhar, V. K., Chandra, P., Yadav, K. K., Venugopal, K., Bhatt, N., Bhattacharyya, S., Chanchalani, K., Ganesh, S., Goyal, H. C., Joshi, U. C., Kaul, R. K., Kothari, M., Kotwal, S., Koul, M. K., Koul, R., Sahaynathan, S., Shah, C., Sharma, M.
Publikováno v:
J.Phys.G34:1683-1696,2007
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 observations were made from 18th October to 9th December 2004 and 27th
Externí odkaz:
http://arxiv.org/abs/0704.3533
Autor:
Yadav, K. K., Chandra, P., Tickoo, A. K., Rannot, R. C., Godambe, S., Koul, M. K., Dhar, V. K., Thoudam, S., Bhatt, N., Bhattacharyya, S., Chanchalani, K., Goyal, H. C., Kaul, R. K., Kothari, M., Kotwal, S., Koul, R., Sahayanathan, S., Sharma, M., Venugopal, K.
Publikováno v:
Astropart.Phys.27:447-454,2007
The TACTIC $\gamma$-ray telescope has observed Mrk 421 on 66 clear nights from Dec. 07, 2005 to Apr. 30, 2006, totalling $\sim$ 202 hours of on-source observations. Here, we report the detection of flaring activity from the source at $\geq$ 1 TeV ene
Externí odkaz:
http://arxiv.org/abs/astro-ph/0701890