X-Ray Luminous Binaries, Metallicity, and the Early Universe

Abstract

High mass X-ray binaries (HMXBs) may have had a significant impact on the heating of the intergalactic medium in the early universe. Study of HMXBs in nearby, low metallicity galaxies that are local analogues to early galaxies can help us understand early HMXBs. The total luminosity of HMXB populations is dominated by sources at high luminosities. These sources exhibit X-ray spectra that show curvature above 2 keV and the same is likely true of HMXB populations at high redshifts. The spectral curvature changes the K-correction for X-rays from HMXBs in a manner that weakens the constraints on X-ray emission of early HMXBs obtained from the soft X-ray background. Applied to deep X-ray surveys of star forming galaxies, the modified K-correction suggests a moderate increase in the ratio of X-ray luminosity to star formation rate at intermediate redshifts, z=3-5, and is consistent with a large enhancement at high redshifts, z=6-7.

5 pages, to appear in MNRAS, corrected typos, added a reference

References in corpus (7)

• X-ray Properties of Black-Hole Binaries
• XMM-Newton observations of the brightest Ultraluminous X-ray sources
• 21 cm fluctuations from inhomogeneous X-ray heating before reionization
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Cited by in corpus (19)

• Ultraluminous X-Ray Sources
• The Evolution of Normal Galaxy X-ray Emission Through Cosmic History: Constraints from the 6 Ms Chandra Deep Field-South
• The X-ray spectra of the first galaxies: 21cm signatures
• X-ray Binary Luminosity Function Scaling Relations for Local Galaxies Based on Subgalactic Modeling
• Decoding the X-ray Properties of Pre-Reionization Era Sources
• X-ray binary formation in low-metallicity blue compact dwarf galaxies
• Imaging the redshifted 21-cm pattern around the first sources during the cosmic dawn using the SKA
• Prediction of the 21-cm signal from reionization: comparison between 3D and 1D radiative transfer schemes
• Exploring the Overabundance of ULXs in Metal- and Dust-poor Local Lyman Break Analogs
• The MOSDEF Survey: The Metallicity Dependence of X-ray Binary Populations at $z\sim 2$
• Formation, disruption and energy output of Population III X-ray binaries
• 21-cm signature of the first sources in the Universe: Prospects of detection with SKA
• Stellar feedback from HMXBs in cosmological hydrodynamical simulations
• A Chandra Virgo cluster survey of spiral galaxies. I. Introduction to the survey and a new ULX sample
• Heating and Ionization of the Primordial Intergalactic Medium by High Mass X-ray Binaries
• Transition of an X-ray binary to the hard ultraluminous state in the blue compact dwarf galaxy VII Zw 403
• Bringing faint active galactic nuclei (AGNs) to light: a view from large-scale cosmological simulations
• Black holes at cosmic dawn in the redshifted 21cm signal of HI
• Black Hole High Mass X-ray Binary Microquasars at Cosmic Dawn