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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 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…

Based on the recently completed {\it Chandra}/ACIS survey of X-ray point sources in nearby galaxies, we study the X-ray luminosity functions (XLFs) for X-ray point sources in different types of galaxies and the statistical properties of…

Astrophysics of Galaxies · Physics 2016-09-28 Song Wang , Yanli Qiu , Jifeng Liu , Joel N. Bregman

We have studied the X-ray luminosity function (XLF) of low-mass X-ray binaries (LMXBs) in the nearby lenticular galaxy NGC 3115, using the Megasecond Chandra X-Ray Visionary Project Observation. With a total exposure time of ~1.1 Ms, we…

We present the X-ray luminosity function (XLF) of low mass X-ray binaries (LMXBs) in the globular clusters (GCs) and fields of seven early-types galaxies. These galaxies are selected to have both deep Chandra observations, which allow their…

High Energy Astrophysical Phenomena · Physics 2016-02-17 Mark B. Peacock , Stephen E. Zepf

We present a new technique for empirically calibrating how the X-ray luminosity function (XLF) of X-ray binary (XRB) populations evolves following a star-formation event. We first utilize detailed stellar population synthesis modeling of…

Astrophysics of Galaxies · Physics 2017-12-20 B. D. Lehmer , R. T Eufrasio , L. Markwardt , A. Zezas , A. Basu-Zych , T. Fragos , A. E. Hornschemeier , A. Ptak , P. Tzanavaris , M. Yukita

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

We derive the X-ray luminosity function (XLF) of the X-ray source population detected in the Chandra observation of NGC4038/39 (the Antennae). We explicitly include photon counting and spectral parameter uncertainties in our calculations.…

Astrophysics · Physics 2017-02-15 A. Zezas , G. Fabbiano

High mass X-ray binary luminosity function (XLF) is an important tool for studying binary evolution processes and also the mass loss and consequent evolution in massive stars. We calculate the XLF for neutron star binaries using the…

High Energy Astrophysical Phenomena · Physics 2015-05-20 Harshal Bhadkamkar , Pranab Ghosh

We characterize the optical counterparts to the compact X-ray source population within the nearby spiral galaxy M81 using multi-band Hubble Space Telescope (HST) imaging data. By comparing the optical luminosities and colors measured for…

High Energy Astrophysical Phenomena · Physics 2023-04-19 Qiana Hunt , Elena Gallo , Rupali Chandar , Angus Mok , Andrea Prestwich

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

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…

There is a large body of work that has used the excellent Chandra observations of nearby galaxies with neglible low mass X-ray binary (LMXB) populations. This has culminated in a ``Universal'' X-ray luminosity function (XLF) for high mass…

Astrophysics · Physics 2007-10-26 R. Barnard , L. Shaw Greening , U. Kolb

Drawing from the Chandra archive and using a carefully selected set of nearby dwarf galaxies, we present a calibrated high-mass X-ray binary (HMXB) luminosity function in the low-mass galaxy regime and search for an already hinted at…

Astrophysics of Galaxies · Physics 2024-01-29 Robel Geda , Andy D. Goulding , Bret D. Lehmer , Jenny E. Greene , Anish Kulkarni

Based on a homogeneous set of X-ray, infrared and ultraviolet observations from Chandra, Spitzer, GALEX and 2MASS archives, we study populations of high-mass X-ray binaries (HMXBs) in a sample of 29 nearby star-forming galaxies and their…

High Energy Astrophysical Phenomena · Physics 2015-05-28 S. Mineo , M. Gilfanov , R. Sunyaev

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

We model X-ray luminosity functions (XLF) of accreting neutron stars and black holes in $10^{35} \leq L_X \leq 10^{41}$ erg/s range in star-forming galaxies and galaxies with the initial star formation burst. XLFs are obtained by combining…

High Energy Astrophysical Phenomena · Physics 2022-09-28 K. A. Postnov , A. G. Kuranov , L. R. Yungelson , M. R. Gilfanov

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 present a Chandra survey of LMXBs in 24 early-type galaxies. Correcting for detection incompleteness, the X-ray luminosity function (XLF) of each galaxy is consistent with a powerlaw with negative logarithmic differential slope,…

Astrophysics · Physics 2011-02-11 Philip J. Humphrey , David A. Buote

As part of the New-ANGELS program, we systematically investigate the X-ray luminosity functions (XLFs) of 4506 X-ray sources projected within a radius of 2.5 deg centering on M31. We construct XLFs for different regions in the disk and halo…

Astrophysics of Galaxies · Physics 2025-11-11 Rui Huang , Jiang-Tao Li , Wei Cui , Zhijie Qu , Joel N. Bregman , Xiang-Dong Li , Gabriele Ponti , Q. Daniel Wang
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