Zobrazeno 1 - 10
of 100
pro vyhledávání: '"Abhas Mitra"'
Autor:
Abhas Mitra, Krishna Kumar Singh
Publikováno v:
Galaxies, Vol 11, Iss 6, p 116 (2023)
Type II Supernova 1987A (SN 1987A), observed in 1987, released an energy of Q≈3×1053 erg. This huge energy is essentially the magnitude of gravitational potential or self-gravitational energy (PE) of a new born cold neutron star having a gravitati
Externí odkaz:
https://doaj.org/article/109bb35c7ac54b83a9cc4582a4110aee
Autor:
Abhas Mitra, Krishna Kumar Singh
Publikováno v:
Universe, Vol 8, Iss 10, p 504 (2022)
We highlight here the fact that the distantly observed luminosity of a spherically symmetric compact star radiating thermal radiation isotropically is higher by a factor of (1+zb)2 compared to the corresponding flat space-time case, where zb is the s
Externí odkaz:
https://doaj.org/article/d51ee98833604e5ab7f27b50fc43c7ca
Autor:
Krishna Kumar Singh, Dr Abhas Mitra
Publikováno v:
Universe. 8:504
We highlight here the fact that the distantly observed luminosity of a spherically symmetric compact star radiating thermal radiation isotropically is higher by a factor of $(1+z_{\rm b})^2$ compared to the corresponding flat space-time case, where $
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::964e05e0a5d64d2d27ce7ed49aedd791
https://doi.org/10.3390/universe8100504
https://doi.org/10.3390/universe8100504
Autor:
Ashok Kumar, S. De, B. K. Nayak, Gaurav Mishra, Raison Thomas, Abhas Mitra, S. V. Suryanarayana
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 921:33-37
We report the results of measurements and GEANT4 simulation for the performance of two 38.1mm × 38.1mm CeBr3 detectors. The linearity and energy resolution of both the detectors have been measured using low energy gamma sources in the range from 121
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a62b5bb6c51d498e9dfbe43d5713a1e
https://doi.org/10.1016/j.nima.2018.12.016
https://doi.org/10.1016/j.nima.2018.12.016
Publikováno v:
The European Physical Journal A. 56
Measurements of prompt fission neutrons and gamma rays spectra have been carried out in the fast neutron induced fission of $$^{232}$$Th at an average neutron energy of 2.6 MeV. The energy spectrum of neutrons is obtained from the time-of-flight spec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d64d7a0bde49d7de029bb0f58c2a944
https://doi.org/10.1140/epja/s10050-020-00127-7
https://doi.org/10.1140/epja/s10050-020-00127-7
Autor:
D.G. Desai, S. C. Gadkari, V.K.S. Kashyap, Abhas Mitra, Sheh Rawat, A.K. Singh, Mohit Tyagi, Pawan Kumar Netrakanti, G. Anil Kumar
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 840:186-191
Single crystals of Gd 3 Ga 3 Al 2 O 12 :Ce,B and CsI:Tl were grown by Czochralski and Bridgman techniques, respectively. While both the crystals exhibited similar emission at about 550 nm, their scintillation decay times showed significantly differen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7eaa788eb53fb4010c4d638bdb8c0089
https://doi.org/10.1016/j.nima.2016.09.060
https://doi.org/10.1016/j.nima.2016.09.060
We remind that the ring down features observed in the LIGO GWs resulted from trembling of photon spheres (Rp=3M) of newly formed compact objects and not from the trembling of their event horizons (R=2M). Further, the tentative evidences for late time
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f69f848e8254fe81d0a5db313066ed3d
http://arxiv.org/abs/1908.06815
http://arxiv.org/abs/1908.06815
Autor:
J. Nayak, A. K. Tickoo, Suvadeep Bose, V. K. Dhar, R. Koul, Abhas Mitra, M. Sharma, M. K. Koul
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 770:42-47
This paper describes the validation of a new background discrimination method based on Random Forest technique by re-analysing the Markarian 421 (Mrk 421) observations performed by the TACTIC (TeV Atmospheric Cherenkov Telescope with Imaging Camera)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21430486bda7d5881a8981a266bcab9f
https://doi.org/10.1016/j.nima.2014.10.012
https://doi.org/10.1016/j.nima.2014.10.012
Autor:
Abhas Mitra, M. Sharma, B. Chinmay, Suvadeep Bose, R. Koul, A. K. Tickoo, Nilay Bhatt, Subir Bhattacharyya, R. C. Rannot
The MACE (Major Atmospheric Cherenkov Experiment) is a 21 m diameter gamma-ray telescope which is presently being installed at Hanle in Ladakh, India (32^0 46^' 46^" N, 78^0 58^' 35^" E) at an altitude of 4270 m a.s.l. Once operational, it will becom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ecf11fc10fb496c72036f435e4174509