The Galactic LMXB Population and the Galactic Centre Region

Sazonov, S.; Paizis, A.; Bazzano, A.; Человеков, И. В.; Khabibullin, Ildar; Постнов, К. А.; Mereminskiy, I. A.; Fiocchi, M.; Bélanger, G.; Bird, A. J.; Bozzo, E.; Chenevez, J.; Santo, M. Del; Falanga, M.; Farinelli, R.; Ferrigno, C.; Гребенев, С. А.; Krivonos, R.; Kuulkers, E.; Lund, N.; Sánchez–Fernández, C.; Tarana, A.; Ubertini, P.; Wilms, J.

doi:10.1016/j.newar.2020.101536

Cited by 30 publications

(18 citation statements)

References 422 publications

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“…Despite significant progress in the study of such systems in recent decades (e.g. Revnivtsev et al 2008;Lutovinov et al 2013;Hong et al 2016;Kretschmar et al 2019;Sazonov et al 2020;Papitto et al 2020), their physical and statistical properties are still not known anywhere near as well as those of brighter X-ray binaries with L X ∼ 10 35 -10 38 erg s −1 . ART-XC will make a census of such low-luminosity X-ray binaries for the first time.…”

Section: X-ray Binaries and Cataclysmic Variablesmentioning

confidence: 99%

The ART-XC telescope on board the SRG observatory

Pavlinsky

Tkachenko

Levin

et al. 2021

A&A

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114

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Astronomical Roentgen Telescope – X-ray Concentrator (ART-XC) 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 Russian Federal Space Program, which was successively launched into orbit around the second Lagrangian point (L2) of the Earth-Sun system with a Proton rocket from the Baikonur cosmodrome on 13 July 2019. The ART-XC telescope will provide the first ever true imaging all-sky survey performed with grazing incidence optics in the 4–30 keV energy band and will obtain the deepest and sharpest map of the sky in the energy range of 4–12 keV. Observations performed during the early calibration and performance verification phase as well as during the ongoing all-sky survey that started on 12 December 2019 have demonstrated that the in-flight characteristics of the ART-XC telescope are very close to expectations based on the results of ground calibrations. Upon completion of its four-year all-sky survey, ART-XC is expected to detect approximately 5000 sources (~3000 active galactic nuclei, including heavily obscured ones, several hundred clusters of galaxies, ~1000 cataclysmic variables and other Galactic sources), and to provide a high-quality map of the Galactic background emission in the 4–12 keV energy band. ART-XC is also well suited for discovering transient X-ray sources. In this paper, we describe the telescope, the results of its ground calibrations, the major aspects of the mission, the in-flight performance of ART-XC, and the first scientific results.

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Section: X-ray Binaries and Cataclysmic Variablesmentioning

confidence: 99%

The ART-XC telescope on board the SRG observatory

Pavlinsky

Tkachenko

Levin

et al. 2021

A&A

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114

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“…2.5. We refer the reader to the article by Sazonov et al (2020) for the results obtained for slower and/or non-pulsating NSs in low-mass X-ray binaries, and to the article by Email address: alessandro.papitto@inaf.it (A. Papitto) Kretschmar et al (2020) for the case of X-ray pulsars in high-mass X-ray binaries. Sect.…”

Section: Introductionmentioning

confidence: 99%

The INTEGRAL view of the pulsating hard X-ray sky: from accreting and transitional millisecond pulsars to rotation-powered pulsars and magnetars

Papitto¹,

Falanga

Hermsen

et al. 2020

New Astronomy Reviews

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In the last 25 years, a new generation of X-ray satellites imparted a significant leap forward in our knowledge of X-ray pulsars. The discovery of accreting and transitional millisecond pulsars proved that disk accretion can spin up a neutron star to a very high rotation speed. The detection of MeV-GeV pulsed emission from a few hundreds of rotation-powered pulsars probed particle acceleration in the outer magnetosphere, or even beyond. Also, a population of two dozens of magnetars has emerged. INTEGRAL played a central role to achieve these results by providing instruments with high temporal resolution up to the hard X-ray/soft γ-ray band and a large field of view imager with good angular resolution to spot hard X-ray transients. In this article, we review the main contributions by INTEGRAL to our understanding of the pulsating hard X-ray sky, such as the discovery and characterization of several accreting and transitional millisecond pulsars, the generation of the first catalog of hard X-ray/soft γ-ray rotation-powered pulsars, the detection of polarization in the hard X-ray emission from the Crab pulsar, and the discovery of persistent hard X-ray emission from several magnetars.

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“…It has been suggested that all confirmed UCXBs contain NS accretors, but the nature of accretors has not been identified exclusively in the observations (e.g. Sazonov et al 2020;Coti Zelati et al 2021). Note that UCXBs with BH accretors have not been confirmed, but there is a known moderately strong BH UCXB candidate 47 Tuc X9 in our Galaxy (see Bahramian et al 2017).…”

Section: Introductionmentioning

confidence: 85%

Ultra-compact X-ray binaries with He star companions

Wang,

Chen,

Liu

et al. 2021

Preprint

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Ultra-compact X-ray binaries (UCXBs) are low-mass X-ray binaries with hydrogen-deficient mass-donors and ultra-short orbital periods. They have been suggested to be the potential Laser Interferometer Space Antenna (LISA) sources in the low-frequency region. Several channels for the formation of UCXBs have been proposed so far. In this article, we carried out a systematic study on the He star donor channel, in which a neutron star (NS) accretes matter from a He main-sequence star through Roche-lobe overflow, where the mass-transfer is driven by the gravitational wave radiation. Firstly, we followed the long-term evolution of the NS+He main-sequence star binaries by employing the stellar evolution code Modules for Experiments in Stellar Astrophysics, and thereby obtained the initial parameter spaces for the production of UCXBs. We then used these results to perform a detailed binary population synthesis approach to obtain the Galactic rates of UCXBs through this channel. We estimate the Galactic rates of UCXBs appearing as LISA sources to be ∼ 3.1 − 11.9 × 10 −6 yr −1 through this channel, and the number of such UCXB-LISA sources in the Galaxy can reach about 100 − 390. The present work indicates that the He star donor channel cannot be ignored in forming UCXB-LISA sources. We found that the evolutionary tracks of UCXBs through this channel can account for the location of the five transient sources with relatively long orbital periods quite well. We also found that such UCXBs can be identified by their locations in the period-mass transfer rate diagram.

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The Galactic LMXB Population and the Galactic Centre Region

Cited by 30 publications

References 422 publications

The ART-XC telescope on board the SRG observatory

The ART-XC telescope on board the SRG observatory

The INTEGRAL view of the pulsating hard X-ray sky: from accreting and transitional millisecond pulsars to rotation-powered pulsars and magnetars

Ultra-compact X-ray binaries with He star companions

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