Explanipedia

New limit on high Galactic latitude PeVγ-ray flux from Tibet ASγdata Open

A. Neronov, D. Semikoz, I. Vovk · 2021

The Tibet AS γ collaboration has recently reported the detection of γ -rays with energies up to Peta-electronvolt from parts of the Galactic plane. We note that the analysis of γ -ray flux by the Tibet-AS γ experiment also implies an upper…

New limit on high Galactic latitude PeV gamma-ray flux from Tibet\n AS-gamma data Open

A. Neronov, D. Semikoz, I. Vovk · 2021

Tibet AS-gamma collaboration has recently reported detection of gamma-rays\nwith energies up to Peta-electronvolt from parts of the Galactic plane. We\nnotice that the analysis of gamma-ray flux by the Tibet AS-gamma experiment\nalso impli…

Overview of non-transientγ-ray binaries and prospects for the Cherenkov Telescope Array Open

M. Chernyakova, D. Malyshev, A. Paizis, N. La Palombara, Matteo Balbo , et al. · 2019

Aims. Despite recent progress in the field, there are still many open questions regarding γ -ray binaries. In this paper we provide an overview of non-transient γ -ray binaries and discuss how observations with the Cherenkov Telescope Arra…

Testing cosmology and fundamental physics with the Cherenkov Telescope Array Open

H. Martínez-Huerta, J. Biteau, J. Lefaucheur, M. Meyer, S. Pita , et al. · 2019

The Cherenkov Telescope Array (CTA) is the next generation ground-based observatory for $γ$-ray astronomy at energies above 30 GeV. Thanks to its unique capabilities, CTA observations will address a plethora of open questions in astrophysi…

Study of orbital and superorbital variability of LSI +61° 303 with X-ray data Open

M. Chernyakova, Iu. Babyk, D. Malyshev, I. Vovk, Sergey S. Tsygankov , et al. · 2017

LSI +61 303 is one of the few X-ray binaries with a Be star companion from which radio, X-rays and high-energy gamma-ray (GeV and TeV) emission have been observed. The nature of the high energy activity of the system is not yet fully under…

MAGIC detection of sub-TEV emission from gravitationally lensed blazar QSO B0218+357 Open

D. Dominis Prester, J. Sitarek, J. Becerra, S. Buson, E. Lindfors , et al. · 2016

The blazar QSO B0218+357 is the first gravitationally lensed blazar detected in the very high energy (VHE, E > 100 GeV) gamma-ray spectral range (Ahnen et al. 2016). It is gravitationally lensed by the intervening galaxy B0218+357G ( z l =…

Test of relativistic gravity using microlensing of relativistically broadened lines in gravitationally lensed quasars Open

A. Neronov, I. Vovk · 2016

We show that observation of the time-dependent effect of microlensing of\nrelativistically broadened emission lines (such as e.g. the Fe Kalpha line in\nX-rays) in strongly lensed quasars could provide data on celestial mechanics of\ncircu…

Multi-wavelength observations of the binary system PSR B1259−63/LS 2883 around the 2014 periastron passage Open

M. Chernyakova, A. Neronov, B. van Soelen, P. J. Callanan, L. O'Shaughnessy , et al. · 2015

We report on the results of the extensive multi-wavelength campaign from\noptical to GeV gamma-rays of the 2014 periastron passage of PSR B1259-63, which\nis a unique high-mass gamma-ray emitting binary system with a young pulsar\ncompanio…

Study of hadron and gamma-ray acceptance of the MAGIC telescopes: towards an improved background estimation Open

E. Prandini, G. Pedaletti, P. Da Vela, E. de Oña Wilhelmi, P. Colin , et al. · 2015

The MAGIC telescopes are an array of two imaging atmospheric Cherenkov telescopes (IACTs) studying the gamma ray sky at very high-energies (VHE; E>100 GeV). The observations are performed in stereoscopic mode, with both telescopes pointing…

Comparison of the expected and observed supernova remnant counts with Fermi/LAT Open

I. Vovk, A. Neronov, D. Malyshev · 2015

SNRs are commonly believed to be the accelerators of the galactic cosmic rays – mainly protons – and are expected to produce γ-rays through the inelastic proton-proton collisions. Fermi/LAT was expected to detect many of those, but only a …

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