2011A&A...528A.149M


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.05CET11:22:32

2011A&A...528A.149M - Astronomy and Astrophysics, volume 528A, 149-149 (2011/4-1)

Stellar black holes at the dawn of the universe.

MIRABEL I.F., DIJKSTRA M., LAURENT P., LOEB A. and PRITCHARD J.R.

Abstract (from CDS):

It is well established that between 380000 and 1 billion years after the Big Bang the Inter Galactic Medium (IGM) underwent a ``phase transformation'' from cold and fully neutral to warm (≃104K) and ionized. Whether this phase transformation was fully driven and completed by photoionization by young hot stars is a question of topical interest in cosmology. We propose here that besides the ultraviolet radiation from massive stars, feedback from accreting black holes in high-mass X-ray binaries (BH-HMXBs) was an additional, important source of heating and reionization of the IGM in regions of low gas density at large distances from star-forming galaxies.We use current theoretical models on the formation and evolution of primitive massive stars of low metallicity, and the observations of compact stellar remnants in the near and distant universe, to infer that a significant fraction of the first generations of massive stars end up as BH-HMXBs. The total number of energetic ionizing photons from an accreting stellar black hole in an HMXB is comparable to the total number of ionizing photons of its progenitor star. However, the X-ray photons emitted by the accreting black hole are capable of producing several secondary ionizations and the ionizing power of the resulting black hole could be greater than that of its progenitor. Feedback by the large populations of BH-HMXBs heats the IGM to temperatures of ≃104K and maintains it ionized on large distance scales.BH-HMXBs determine the early thermal history of the universe and maintain it as ionized over large volumes of space in regions of low density. This has a direct impact on the properties of the faintest galaxies at high redshifts, the smallest dwarf galaxies in the local universe, and on the existing and future surveys at radio wavelengths of atomic hydrogen in the early universe.

Abstract Copyright:

Journal keyword(s): X-rays: binaries - black hole physics - dark ages, reionization, first stars - cosmology: miscellaneous - intergalactic medium

Simbad objects: 11

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Number of rows : 11

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME IC 10 X-1 HXB 00 20 29.09 +59 16 51.9           ~ 150 0
2 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 11215 1
3 NAME NGC 300 X-1 HXB 00 55 09.990 -37 42 12.16     22.44     WNE 104 1
4 NAME M33 X-7 HXB 01 33 34.13 +30 32 11.3 17.50 18.80 18.70     O 132 2
5 GRB 090423 gB 09 55 33.19 +18 08 57.7           ~ 314 0
6 SS 433 HXB 19 11 49.5645897700 +04 58 57.824087535   16.3 13.0     A7Ib: 1959 4
7 SNR G039.7-02.0 SNR 19 12 20 +04 55.0           ~ 319 1
8 Granat 1915+105 HXB 19 15 11.55576 +10 56 44.9052           ~ 2347 0
9 HD 226868 HXB 19 58 21.6758193269 +35 12 05.782512305 9.38 9.72 8.91 8.42   O9.7Iabpvar 3983 0
10 NGC 7793 GiG 23 57 49.7533807411 -32 35 27.708304655 10.26 9.74 9.28 9.06 9.7 ~ 957 2
11 [BL97] N7793-S26 SNR 23 58 00.27 -32 33 22.1           ~ 48 0

    Equat.    Gal    SGal    Ecl

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2021.03.05-11:22:32

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