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We review recent results on populations of compact X-ray sources in normal galaxies. The luminosity distributions of low and high mass X-ray binaries in nearby galaxies appear to be described by the respective ``universal'' luminosity…

Astrophysics · Physics 2008-11-26 M. Gilfanov

The high mass X-ray binaries (HMXBs) provide an exciting framework to investigate the evolution of massive stars and the processes behind binary evolution. HMXBs have shown to be good tracers of recent star formation in galaxies and might…

High Energy Astrophysical Phenomena · Physics 2020-02-19 M. Celeste Artale , Nicola Giacobbo , Michela Mapelli , Paolo Esposito

Based on CHANDRA observations of nearby starburst galaxies and RXTE/ASM, ASCA and MIR-KVANT/TTM studies of high mass X-ray binary (HMXB) populations in the Milky Way and Magellanic Clouds, we propose that the number and/or the collective…

Astrophysics · Physics 2009-11-07 H. -J. Grimm , M. Gilfanov , R. Sunyaev

We present new Chandra constraints on the X-ray luminosity functions (XLFs) of X-ray binary (XRB) populations, and their scaling relations, for a sample of 38 nearby galaxies (D = 3.4-29 Mpc). Our galaxy sample is drawn primarily from the…

We introduce a method for obtaining the X-ray luminosity function (XLF) and the binary-period distribution of populations of high-mass X-ray binaries (HMXBs) in the stellar fields (i.e. outside globular clusters) of normal galaxies. We…

High Energy Astrophysical Phenomena · Physics 2015-06-03 Harshal Bhadkamkar , Pranab Ghosh

Today's sensitive, high-resolution X-ray observations allow the study of populations of X-ray sources, in the luminosity range of Galactic X-ray binaries, in galaxies as distant as 20-30 Mpc. The traditional astronomical tools of…

Astrophysics · Physics 2009-11-13 G. Fabbiano

We present detailed constraints on the metallicity dependence of the high mass X-ray binary (HMXB) X-ray luminosity function (XLF). We analyze ~5 Ms of Chandra data for 55 actively star-forming galaxies at D < 30 Mpc with gas-phase…

Emission from X-ray binaries (XRBs) is a major component of the total X-ray luminosity of normal galaxies, so X-ray studies of high redshift galaxies allow us to probe the formation and evolution of X-ray binaries on very long timescales.…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 M. Tremmel , T. Fragos , B. D. Lehmer , P. Tzanavaris , K. Belczynski , V. Kalogera , A. R. Basu-Zych , W. M. Farr , A. Hornschemeier , L. Jenkins , A. Ptak , A. Zezas

Based on recent X-ray observations of the Milky Way, Magellanic Clouds and nearby starburst galaxies we study population of high mass X-ray binaries, their connection with ultra-luminous X-ray sources and relation to the star formation.…

Astrophysics · Physics 2009-11-10 M. Gilfanov , H. -J. Grimm , R. Sunyaev

X-ray luminosity ($L_X$) originating from high-mass X-ray binaries (HMXBs) is tightly correlated with the host galaxy's star-formation rate (SFR). We explore this connection at sub-galactic scales spanning ${\sim}$7 dex in SFR and ${\sim}$8…

Using results of Chandra observations of old stellar systems in eleven nearby galaxies of various morphological types and the census of LMXBs in the Milky Way, we study the population of low mass X-ray binaries and their relation to the…

Astrophysics · Physics 2008-11-26 M. Gilfanov

We present the largest-scale comparison to date between observed extragalactic X-ray binary (XRB) populations and theoretical models of their production. We construct observational X-ray luminosity functions (oXLFs) using Chandra…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 P. Tzanavaris , T. Fragos , M. Tremmel , L. Jenkins , A. Zezas , B. D. Lehmer , A. Hornschemeier , V. Kalogera , A. Ptak , A. R. Basu-Zych

Using a spectral analysis of bright Chandra X-ray sources located in 27 nearby galaxies and maps of star-formation rate (SFR) and ISM surface densities for these galaxies, we constructed the intrinsic X-ray luminosity function (XLF) of…

High Energy Astrophysical Phenomena · Physics 2017-01-18 Sergey Sazonov , Ildar Khabibullin

Observations of the high energy sky, mainly with the INTEGRAL satellite, have raised new questions about the formation and evolution of High Mass X-ray Binaries (HMXBs). The number of detected HMXBs of different types is now high enough to…

High Energy Astrophysical Phenomena · Physics 2013-02-18 A. Coleiro , S. Chaty

Continuing our exploration of the collective properties of low-mass X-ray binaries (LMXBs) in the stellar fields of normal galaxies, we compute in this paper the expected X-ray luminosity function (XLF) of LMXBs, starting from the results…

High Energy Astrophysical Phenomena · Physics 2013-01-08 Harshal Bhadkamkar , Pranab Ghosh

We investigate X-ray binary (XRB) luminosity function (XLF) scaling relations for Chandra detected populations of low-mass XRBs (LMXBs) within the footprints of 24 early-type galaxies. Our sample includes Chandra and HST observed galaxies…

Among high-redshift galaxies, aside from active galactic nuclei (AGNs), X-ray binaries (XRBs) can be significant sources of X-ray emission. XRBs play a crucial role in galaxy evolution, reflecting the stellar populations of galaxies and…

Astrophysics of Galaxies · Physics 2025-08-01 Sijia Cai , Zheng Cai , Jianwei Lyu , Yunjing Wu , Xiaojing Lin , Mingyu Li , Junjie Mao , Jiayi Chen , Pengjun Lu

The star formation (SF) can be regarded as an engine powering the light emission of spiral galaxies at several wavelengths. SF activity also plays a significant role in the evolution of galaxies. In this thesis we focus on the X-ray…

Astrophysics · Physics 2009-09-29 Piero Ranalli

Today's sensistive, high resolution Chandra X-ray observations allow the study of many populations of X-ray sources. The traditional astronomical tools of photometric diagrams and luminosity functions are now applied to these populations,…

Astrophysics · Physics 2009-11-11 G. Fabbiano

Observations of the high energy sky, particularly with the INTEGRAL satellite, have quadrupled the number of supergiant X-ray Binaries observed in the Galaxy, and revealed new populations of previously hidden High Mass X-ray Binaries…

High Energy Astrophysical Phenomena · Physics 2013-02-08 Alexis Coleiro , Sylvain Chaty
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