Zobrazeno 1 - 10
of 368
pro vyhledávání: '"Grebenev, S."'
Autor:
Tyul'bashev, S. A., Samodurov, V. A., Pozanenko, A. S., Brylyakova, E. A., Grebenev, S. A., Chelovekov, I. V., Minaev, P. Yu., Isaev, E. A., Barkov, M. V.
We report the discovery of a bright pulse having a dispersion measure (DM) equal to 134.4 \pm 2 pc cm^{-3}, a peak flux density (S_p) equal to 20 \pm 4 Jy and a half-width (W_e) equal to 211 \pm 6 ms. The excessive DM of the pulse, after taking into
Externí odkaz:
http://arxiv.org/abs/2410.13561
Autor:
Grebenev, S. A., Sunyaev, R. A.
Publikováno v:
Astronomy Letters, 50 (2024), 159-185
We explore the possibility of detecting the excess of the cosmic radio background (CRB) toward galaxy clusters due to its Compton scattering by electrons of the hot intergalactic gas. When mapping the background fluctuations at frequencies < 800 MHz,
Externí odkaz:
http://arxiv.org/abs/2408.01858
Autor:
Minaev, P. Yu., Pozanenko, A. S., Grebenev, S. A., Chelovekov, I. V., Pankov, N. S., Khabibullin, A. A., Inasaridze, R. Ya., Novichonok, A. O.
The results of a study of the short gamma-ray burst GRB 231115A in the X-ray and gamma-ray ranges are presented, based on data from the INTEGRAL and Fermi space observatories. The source of the burst is localized by the IBIS/ISGRI telescope of INTEGR
Externí odkaz:
http://arxiv.org/abs/2402.08623
Autor:
Zakharov, E. I., Barinov, V. V., Burenin, R. A., Gorbunov, D. S., Krivonos, R. A., Tkachenko, A. Yu., Arefiev, V. A., Filippova, E. V., Grebenev, S. A., Lutovinov, A. A., Mereminsky, I. A., Sazonov, S. Yu., Semena, A. N., Shtykovsky, A. E., Sunyaev, R. A.
Publikováno v:
Phys. Rev. D 109, L021301 (2024)
Dark matter sterile neutrinos radiatively decay in the Milky Way, which can be tested with searches for almost monochromatic photons in the X-ray cosmic spectrum. We analyse the data of SRG/ART-XC telescope operated for two years in the all-sky surve
Externí odkaz:
http://arxiv.org/abs/2303.12673
Autor:
Krivonos, R., Arefiev, V., Lapshov, I., Filippova, E., Burenin, R., Semena, A., Grebenev, S., Sazonov, S., Shtykovsky, A., Tkachenko, A., Lutovinov, A.
The Spectrum-Roentgen-Gamma (SRG) observatory is currently conducting its 4-year all-sky X-ray survey, started on December 12, 2019. The survey is periodically interrupted for technological operations with the spacecraft. These time intervals are usu
Externí odkaz:
http://arxiv.org/abs/2107.05586
Autor:
Pavlinsky, M., Tkachenko, A., Levin, V., Alexandrovich, N., Arefiev, V., Babyshkin, V., Batanov, O., Bodnar, Yu., Bogomolov, A., Bubnov, A., Buntov, M., Burenin, R., Chelovekov, I., Chen, C. -T., Drozdova, T., Ehlert, S., Filippova, E., Frolov, S., Gamkov, D., Garanin, S., Garin, M., Glushenko, A., Gorelov, A., Grebenev, S., Grigorovich, S., Gureev, P., Gurova, E., Ilkaev, R., Katasonov, I., Krivchenko, A., Krivonos, R., Korotkov, F., Kudelin, M., Kuznetsova, M., Lazarchuk, V., Lomakin, I., Lapshov, I., Lipilin, V., Lutovinov, A., Mereminskiy, I., Molkov, S., Nazarov, V., Oleinikov, V., Pikalov, E., Ramsey, B. D., Roiz, I., Rotin, A., Sankin, E., Ryadov, A., Sazonov, S., Sedov, D., Semena, A., Semena, N., Serbinov, D., Shirshakov, A., Shtykovsky, A., Shvetsov, A., Sunyaev, R., Swartz, D. A., Tambov, V., Voron, V., Yaskovich, A.
ART-XC (Astronomical Roentgen Telescope - X-ray Concentrator) is the hard X-ray instrument with grazing incidence imaging optics on board the Spektr-Roentgen-Gamma (SRG) observatory. The SRG observatory is the flagship astrophysical mission of the Ru
Externí odkaz:
http://arxiv.org/abs/2103.12479
Publikováno v:
New Astronomy Reviews, Volume 92, June 2021, 101606
Novae and supernovae play a key role in many fields of Astrophysics and Cosmology. Despite their importance, an accurate description of which objects explode and why and how they explode is still lacking. One of the main characteristics of such explo
Externí odkaz:
http://arxiv.org/abs/2101.02738
Autor:
Grebenev, A. S., Dvorkovich, Yu. A., Knyazeva, V. S., Ostashenko, K. D., Grebenev, S. A., Mereminskiy, I. A., Prosvetov, A. V.
Publikováno v:
Astronomy Letters, 46 (2020), 205-223
Based on long-term SWIFT, RXTE, and MAXI observations of the X-ray novae H1743-322 (IGR J17464-3213) and GX339-4, we have investigated the morphology and classified the light curves of their X-ray outbursts. In particular, we have confirmed the exist
Externí odkaz:
http://arxiv.org/abs/2009.09314
Autor:
Sazonov, S., Paizis, A., Bazzano, A., Chelovekov, I., Khabibullin, I., Postnov, K., Mereminskiy, I., Fiocchi, M., Bélanger, G., Bird, A. J., Bozzo, E., Chenevez, J., Del Santo, M., Falanga, M., Farinelli, R., Ferrigno, C., Grebenev, S., Krivonos, R., Kuulkers, E., Lund, N., Sanchez-Fernandez, C., Tarana, A., Ubertini, P., Wilms, J.
Seventeen years of hard X-ray observations with the instruments of the INTEGRAL observatory, with a focus on the Milky Way and in particular on the Galactic Centre region, have provided a unique database for exploration of the Galactic population of
Externí odkaz:
http://arxiv.org/abs/2006.05063
Publikováno v:
Astronomy Letters, 45 (2019), 635-654
A systematic search for cosmic gamma-ray bursts (GRBs) and other short hard X-ray events in the archival data from the IBIS/ISGRI telescope of the INTEGRAL observatory over 2003-2018 has been carried out. Seven previously unknown GRBs have been recor
Externí odkaz:
http://arxiv.org/abs/2005.11606