196 citations · 1.5k across the 46 of their papers we have counts for
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The ART-XC telescope on board the SRG observatory
M. Pavlinsky, A. Tkachenko, V. Levin +59
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) observator…
Synthesis of radioactive elements in novae and supernovae and their use as a diagnostic tool
J. Isern, M. Hernanz, E. Bravo +5
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 e…
Morphology of the Light Curves for the X-ray Novae H1743-322 and GX339-4 during their Outbursts in 2005-2019
A. S. Grebenev, Yu. A. Dvorkovich, V. S. Knyazeva +4
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 curve…
Advances in Understanding High-Mass X-ray Binaries with INTEGRAL and Future Directions
Peter Kretschmar, Felix Fürst, Lara Sidoli +48
High mass X-ray binaries are among the brightest X-ray sources in the Milky Way, as well as in nearby Galaxies. Thanks to their highly variable emissions and complex phenomenology,…
The Galactic LMXB Population and the Galactic Centre Region
S. Sazonov, A. Paizis, A. Bazzano +21
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 pro…
New Gamma-Ray Bursts Found in the Archival Data from the IBIS/ISGRI Telescope of the INTEGRAL Observatory
I. V. Chelovekov, S. A. Grebenev, A. S. Pozanenko +1
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 2003-20…
Decrease in the Brightness of the Cosmic X-ray and Soft Gamma-ray Background toward Clusters of Galaxies
S. A. Grebenev, R. A. Sunyaev
We show that Compton scattering by electrons of the hot intergalactic gas in galaxy clusters should lead to peculiar distortions of the cosmic background X-ray and soft gamma-ray r…
Observation of the second LIGO/Virgo event connected with binary neutron star merger S190425z in the gamma-ray range
A. S. Pozanenko, P. Yu. Minaev, S. A. Grebenev +1
Observations of the gravitational-wave (GW) event S190425z registered by the LIGO/Virgo detectors with the Anti-Coincidence Shield (ACS) of the gamma-ray spectrometer SPI aboard th…
Catching Element Formation In The Act
Chris L. Fryer, Frank Timmes, Aimee L. Hungerford +216
Gamma-ray astronomy explores the most energetic photons in nature to address some of the most pressing puzzles in contemporary astrophysics. It encompasses a wide range of objects…
Single X-ray Bursts and the Model of a Spreading Layer of Accreting Matter over the Neutron Star Surface
S. A. Grebenev, I. V. Chelovekov
The excess of the rate of type I X-ray bursts over that expected when the matter fallen between bursts completely burns out in a thermonuclear explosion is explained in terms of th…
Low-Frequency Quasi-Periodic Oscillations in the X-ray Nova MAXI J1535-571 at the Initial Stage of Its 2017 Outburst
I. A. Mereminskiy, S. A. Grebenev, A. V. Prosvetov +1
We report the discovery of low-frequency quasi-periodic oscillations (QPOs) in the power spectrum of the X-ray nova MAXI J1535-571 at the initial stage of its outburst in September…
IGR J17445-2747 - yet another X-ray burster in the Galactic bulge
I. A. Mereminskiy, S. A. Grebenev, R. A. Sunyaev
The discovery of a type I X-ray burst from the faint unidentified transient source IGR J17445-2747 in the Galactic bulge by the JEM-X telescope onboard the INTEGRAL observatory is…
Multiple X-ray bursts and the model of a spreading layer of accreting matter over the neutron star surface
S. A. Grebenev, I. V. Chelovekov
We report the detection during the JEM-X/INTEGRAL observations of several X-ray bursters of series of close type I X-ray bursts consisting of two or three events with a recurrence…
The origin of the bimodal luminosity distribution of ultraluminous X-ray pulsars
S. A. Grebenev
The mechanism that can be responsible for the bimodal luminosity distribution of super-Eddington X-ray pulsars in binary systems is pointed out. The transition from the high to low…
The outburst of the X-ray nova GRS 1739-278 in September, 2016
I. A. Mereminskiy, E. V. Filippova, R. A. Krivonos +3
During the scanning observations of the Galactic Center region in August - September 2016 we detected the new outburst of the historical X-ray nova GRS 1739-278, the black hole can…
X-ray nova MAXI J1828-249. Evolution of the broadband spectrum during its 2013-2014 outburst
S. A. Grebenev, A. V. Prosvetov, R. A. Burenin +2
Based on data from the SWIFT, INTEGRAL, MAXI/ISS orbital observatories, and the ground-based RTT-150 telescope, we have investigated the broadband (from the optical to the hard X-r…
Gamma-rays from Type Ia supernova SN2014J
E. Churazov, R. Sunyaev, J. Isern +8
The whole set of INTEGRAL observations of type Ia supernova SN2014J, covering the period 19-162 days after the explosion has being analyzed. For spectral fitting the data are split…
Early 56Ni decay γ-rays from SN2014J suggest an unusual explosion
Roland Diehl, Thomas Siegert, Wolfgang Hillebrandt +7
Type-Ia supernovae result from binary systems that include a carbon-oxygen white dwarf, and these thermonuclear explosions typically produce 0.5 M_solar of radioactive 56Ni. The 56…
Catalog of Short Gamma-Ray Transients Detected in the SPI/INTEGRAL Experiment
P. Yu. Minaev, A. S. Pozanenko, S. V. Molkov +1
We analyzed data obtained by the SPI telescope onboard the INTEGRAL observatory to search for short transient events with a duration from 1 ms to a few tens of seconds. An algorith…
Cobalt-56 gamma-ray emission lines from the type Ia supernova 2014J
E. Churazov, R. Sunyaev, J. Isern +8
A type Ia supernova is thought to be a thermonuclear explosion of either a single carbon-oxygen white dwarf or of a pair of merging white dwarfs. The explosion fuses a large amount…
Investigation of the spectral lag - energy relation of GRBs registered by INTEGRAL
P. Minaev, A. Pozanenko, S. Grebenev +1
We investigated the dependence of spectral lag on energy band based on 28 bright GRBs detected by the SPI and IBIS/ISGRI instruments on the INTEGRAL observatory. It is found that f…
Hard X-ray emission lines from the decay of Ti-44 in the remnant of supernova 1987A
S. A. Grebenev, A. A. Lutovinov, S. S. Tsygankov +1
It is assumed that the radioactive decay of Ti-44 powers the infrared, optical and UV emission of supernova remnants after the complete decay of Co-56 and Co-57 (the isotopes that…
Luminosity Function of High-Mass X-ray Binaries and Anisotropy in the Distribution of Active Galactic Nuclei toward the Large Magellanic Cloud
A. A. Lutovinov, S. A. Grebenev, S. S. Tsygankov
In 2003-2012, the INTEGRAL observatory has performed long-term observations of the Large Magellanic Cloud (LMC). At present, this is one of the deepest hard X-ray (20-60 keV) surve…
Deep Hard X-ray Survey of the Large Magellanic Cloud
S. A. Grebenev, A. A. Lutovinov, S. S. Tsygankov +1
Results of the deep survey of the Large Magellanic Cloud (LMC), performed with the INTEGRAL observatory, are presented. The long exposure (~7 Ms) allowed us to detect twenty one so…