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INTEGRAL Detection of the First Prompt Gamma-Ray Signal Coincident with the Gravitational Wave Event GW170817
V. Savchenko, C. Ferrigno, E. Kuulkers +20
We report the e INTernational Gamma-ray Astrophysics Laboratory (INTEGRAL) detection of the short gamma-ray burst GRB 170817A (discovered by Fermi-GBM) with a signal-to-noise ratio…
Radius of the neutron star magnetosphere during disk accretion
E. V. Filippova, I. A. Mereminskiy, A. A. Lutovinov +2
The dependence of the spin frequency derivative of accreting neutron stars with a strong magnetic field (X-ray pulsars) on the mass accretion rate (bolometric luminosity, $…
Modeling of High-Frequency Variability in X-ray Binaries with Black Holes
A. N. Semena, M. G. Revnivtsev, T. I. Larchenkova +1
The properties of the aperiodic variability in X-ray binaries with black holes are considered. The power spectra of the luminosity variability for a flat accretion disk that is an…
Basic parameters of the helium accreting X-ray bursting neutron star in 4U 1820-30
Valery F. Suleimanov, Jari J. E. Kajava, Sergey V. Molkov +4
The ultracompact low-mass X-ray binary 4U 1820-30 situated in the globular cluster NGC 6624 has an orbital period of only 11.4 min which likely implies a white dwarf compa…
INTEGRAL observations of GW170104
V. Savchenko, C. Ferrigno, E. Bozzo +16
We used data from the INTErnational Gamma-Ray Astrophysics Laboratory (INTEGRAL) to set upper-limits on the -ray and hard X-ray prompt emission associated with the gravitational…
On the radiation beaming of bright X-ray pulsars and constraints on neutron star mass-radius relation
Alexander A. Mushtukov, Patrick A. Verhagen, Sergey S. Tsygankov +3
The luminosity of accreting magnetised neutron stars can largely exceed the Eddington value due to appearance of accretion columns. The height of the columns can be comparable to t…