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We study the dynamical evolution of eccentric massive black hole binaries (MBHBs) interacting with unbound stars by means of an extensive set of three body scattering experiments. Compared to previous studies, we extend the investigation…

The neutron star low mass X-ray binary (LMXB) AX J1745.6-2901 was detected an anomalously fast decrease of orbital period. The decreasing rate of orbital period exceeds the contribution of all processes extracting angular momentum from the…

High Energy Astrophysical Phenomena · Physics 2022-07-12 A. I. Bogomazov , A. M. Cherepashchuk , T. S. Khruzina , A. V. Tutukov

We study the long-term evolution of massive black hole binaries (MBHBs) at the centers of galaxies using detailed scattering experiments to solve the full three-body problem. Ambient stars drawn from a isotropic Maxwellian distribution…

Astrophysics · Physics 2011-02-11 A. Sesana , F. Haardt , P. Madau

We show that a common evolutionary history can produce the black hole binaries in the Galaxy in which the black holes have masses of ~ 5-10 M_sun. In with low-mass, <~ 2.5 M_sun, ZAMS (zero age main sequence) companions, the latter remain…

Astrophysics · Physics 2009-11-07 Chang-Hwan Lee , Gerald E. Brown

Millisecond pulsar + helium white dwarf (MSP+He WD) binaries are thought to have descended from neutron star (NS) low-mass X-ray binaries (LMXBs). The NSs accreted from the progenitors of the WDs and their spin periods were accordingly…

High Energy Astrophysical Phenomena · Physics 2024-08-30 Zhe Cui , Xiang-Dong Li

A binary in which a slightly evolved star starts mass transfer to a neutron star can evolve towards ultra-short orbital periods under the influence of magnetic braking. This is called magnetic capture. We investigate in detail for which…

Astrophysics · Physics 2009-11-10 M. V. van der Sluys , F. Verbunt , O. R. Pols

The spin is an important but poorly constrained parameter for describing supermassive black holes (SMBHs). Using the continuity equation of SMBH number density, we explicitly obtain the mass-dependent cosmological evolution of the radiative…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Yan-Rong Li , Jian-Min Wang , Luis C. Ho

We investigate the evolution of supermassive binary black holes (BBHs) in galaxies with realistic property distributions and the gravitational-wave (GW) radiation from the cosmic population of these BBHs. We incorporate a comprehensive…

High Energy Astrophysical Phenomena · Physics 2020-07-24 Yunfeng Chen , Qingjuan Yu , Youjun Lu

Galactic field black hole (BH) low-mass X-ray binaries (LMXBs) are believed to form in situ via the evolution of isolated binaries. In the standard formation channel, these systems survived a common envelope phase, after which the remaining…

High Energy Astrophysical Phenomena · Physics 2015-06-22 Tassos Fragos , Jeffrey E. McClintock

The results of a temporal analysis of observations for a sample of nine low-mass X-ray binaries (LMXBs) are presented. Of these sources, five host a neutron star (NS) primary (4U1608-52, Aql X-1, 4U1705-44, GX17+2 and Cyg X-2), and four…

High Energy Astrophysical Phenomena · Physics 2022-02-23 E. Sonbas , K. Mohamed , K. S. Dhuga , E. Göğüş

As the number of gravitational-wave detections grows, the merger rate of binary black holes (BBHs) can help us to constrain their formation, the properties of their progenitors, and their birth environment. Here, we aim to address the…

High Energy Astrophysical Phenomena · Physics 2025-06-24 Cecilia Sgalletta , Michela Mapelli , Lumen Boco , Filippo Santoliquido , M. Celeste Artale , Giuliano Iorio , Andrea Lapi , Mario Spera

We investigate how the proximity of supergiant donor stars to the Eddington-limit, and their advanced evolutionary stage, may influence the evolution of massive and ultra-luminous X-ray binaries with supergiant donor stars (SGXBs and ULXs).…

Solar and Stellar Astrophysics · Physics 2019-07-31 Martin Quast , Norbert langer , Thomas M. Tauris

The three dynamically confirmed wind-fed black hole high-mass X-ray binaries (BH-HMXBs) are suggested to all contain a highly spinning black hole (BH). However, based on the theories of efficient angular momentum transport inside the stars,…

We constrain the orbital period ($P_{\rm orb}$) distribution of low-mass detached main-sequence eclipsing binaries (EBs) with light curves from the Zwicky Transient Facility (ZTF), which provides a well-understood selection function and…

Solar and Stellar Astrophysics · Physics 2022-10-26 Kareem El-Badry , Charlie Conroy , Jim Fuller , Rocio Kiman , Jan van Roestel , Antonio C. Rodriguez , Kevin B. Burdge

Motivated by the discovery of a handful of pulsating, extremely low mass white dwarfs (ELM WDs, mass $M \lesssim 0.17\, M_\odot$) which likely have WD companions, this paper discusses binary formation models for these systems. Formation of…

Solar and Stellar Astrophysics · Physics 2018-05-16 Meng Sun , Phil Arras

The formation of massive black hole binaries (MBHBs) is an unavoidable outcome of galaxy evolution via successive mergers. However, the mechanism that drives their orbital evolution from parsec separations down to the gravitational wave…

High Energy Astrophysical Phenomena · Physics 2017-08-04 Felipe G. Goicovic , Alberto Sesana , Jorge Cuadra , Federico Stasyszyn

In low-mass binary systems, mass transfer is likely to occur via a slow and dense stellar wind when one of the stars is in the AGB phase. Observations show that many binaries that have undergone AGB mass transfer have orbital periods of…

Solar and Stellar Astrophysics · Physics 2018-10-17 M. I. Saladino , O. R. Pols , E. van der Helm , I. Pelupessy , S. Portegies Zwart

In this paper, globular star clusters which contain a sub-system of stellar-mass black holes (BH) are investigated. This is done by considering two-component models, as these are the simplest approximation of more realistic multi-mass…

Astrophysics of Galaxies · Physics 2015-06-15 Philip G. Breen , Douglas C. Heggie

We study the mass transfer rates and disk stability conditions of ultracompact X-ray binaries (UCXBs) using empirical time-averaged X-ray luminosities from Paper I (Cartwright et al. 2013) and compiled information from the literature. The…

High Energy Astrophysical Phenomena · Physics 2015-06-15 C. O. Heinke , N. Ivanova , M. C. Engel , K. Pavlovskii , G. R. Sivakoff , T. F. Cartwright , J. C. Gladstone

We consider the evolution of millisecond radio pulsars in binary systems with a main-sequence or evolved stellar companion. Evolution of non-accreting binary systems with "eclipsing" milisecond pulsars was described by Klu\'zniak, Czerny &…

High Energy Astrophysical Phenomena · Physics 2015-03-20 Filip Ficek , Mieszko Rutkowski , Włodek Kluźniak
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