Zobrazeno 1 - 10
of 125
pro vyhledávání: '"Bhadra, Arunava"'
Weyl's conformal gravity theory, which is considered as a compelling alternative to general relativity theory, has been claimed to describe the observed flat rotation curve feature of spiral galaxies without the need of invoking dark matter. However,
Externí odkaz:
http://arxiv.org/abs/2306.01345
Very recently, HAWC observatory discovered the high-energy gamma ray emission from the solar disk during the quiescent stage of the Sun, extending the Fermi-LAT detection of intense, hard emission between 0.1 - 200 GeV to TeV energies. The flux of th
Externí odkaz:
http://arxiv.org/abs/2305.17086
Autor:
Banik, Prabir, Bhadra, Arunava
Publikováno v:
Eur. Phys. J. C 82, 517 (2022)
Recently, the IceCube Neutrino Observatory has detected the neutrino event IceCube-170922A from the radio-emitting tidal disruption event (TDE) named AT2019dsg, indicating to be one of the most likely sources of high-energy cosmic rays. So far, the p
Externí odkaz:
http://arxiv.org/abs/2303.02955
Publikováno v:
Phys. Scr. 98 125024, 2023
The absolute nature of many fundamental predictions of the theory of special relativity, including the relativity of simultaneity, has been questioned in the literature owing to the choice of distant clock synchronization process in the theory. Here
Externí odkaz:
http://arxiv.org/abs/2111.12285
Autor:
Banik, Prabir, Bhadra, Arunava
Publikováno v:
Eur. Phys. J. C 81:478 (2021)
Recently the MAGIC telescope observed three TeV gamma-ray extended sources in the galactic plane in the neighborhood of radio SNR G24.7+0.6. Among them, the PWN HESS J1837-069 was detected earlier by the HESS observatory during its first galactic pla
Externí odkaz:
http://arxiv.org/abs/2108.01863
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 500, Issue 1, January 2021, Pages 1087-1094
The nearest active radio galaxy Centaurus (Cen) A is a gamma-ray emitter in GeV to TeV energy scale. The High Energy Stereoscopic System (H.E.S.S.) and non-simultaneous Fermi-LAT observation indicate an unusual spectral hardening above few GeV energi
Externí odkaz:
http://arxiv.org/abs/2102.00213
We test the Grumiller's quantum motivated modified gravity model, which at large distances modifies the Newtonian potential and describes the galactic rotation curves of disk galaxies in terms of a Rindler acceleration term without the need of any da
Externí odkaz:
http://arxiv.org/abs/2101.08721
Publikováno v:
Phys. Rev. D 101, 063024 (2020)
Recent detection of the neutrino events IceCube-170922A, 13 muon-neutrino events observed in 2014-2015 and IceCube-141209A by IceCube observatory from the Blazars, namely TXS 0506+056, PKS 0502+049/TXS 0506+056 and GB6 J1040+0617 respectively in the
Externí odkaz:
http://arxiv.org/abs/1909.01993
Autor:
Banik, Prabir, Bhadra, Arunava
Publikováno v:
Physical Review D, Volume 99, Issue 10, id.103006 (2019)
Recent detection of the neutrino event, IceCube-170922A by IceCube observatory from the Blazar TXS 0506+056 in the state of enhanced gamma ray emission indicates for acceleration of cosmic rays in the blazar jet. The non-detection of the broadline em
Externí odkaz:
http://arxiv.org/abs/1908.11849
Publikováno v:
General Relativity and Gravitation, Volume 51, Issue 4, article id. 54, 2019
The expression of gravitational time advancement (negative time delay) for particles with non-zero mass in Schwarzschild geometry has been obtained. The influences of the gravitational field that describes the observed rotation curves of spiral galax
Externí odkaz:
http://arxiv.org/abs/1905.07565