X-ray binaries and CXB Marat Gilfanov, Igor Prokopenko & Rashid Sunyaev. MPA (Garching), IKI (Moscow)

Marat GilfanovExtragalactic surveys, 6-8/11/2006 X-ray binaries HMXB - star formationLMXB - stellar mass

Marat GilfanovExtragalactic surveys, 6-8/11/2006 X-ray binaries & cosmic SF Cosmic star formationstellar mass (from Nagamine et al., 2006)

Marat GilfanovExtragalactic surveys, 6-8/11/2006 Bookbinder et al., 1980 Griffiths & Padovani, 1990 Moran, Lehnert & Helfand, 1999 Ghosh & White, 2001 and others… Ranalli, Comastri & Setti, 2005: This work - broad-band view ? X-ray binaries CXB spectrum Previous work:

Marat GilfanovExtragalactic surveys, 6-8/11/2006 HMXB  SFR(z) from Hopkins & Beacom’06, Nagamine et al.’06  H 0 =70,  M =0.3,   =0.7  consistent calibrations of SFR indicators (Bell’03, Hopkins’03,’04)  cosmic SFH  Lx-SFR relation for HMXB  consistent Lx-SFR from Grimm et al, 2003 & Ranalli et al.,2003 SFR: Msun, Salpeter IMF

Marat GilfanovExtragalactic surveys, 6-8/11/2006 HMXB - spectra HMXB spectraHMXB luminosity function 10% HMXB pulsars + 20% BH +70% “ULX” Swartz et al., 2004 HMXB pulsars Black holes “ULX”

Marat GilfanovExtragalactic surveys, 6-8/11/2006 LMXB binary evolution:  ~1 Gyrs LMXB luminosity function: main contribution: –brigth NS LMXBs (Z-sources) –BH transients - …? LMXB XLF

Marat GilfanovExtragalactic surveys, 6-8/11/2006 Contribution to CXB ~ 1.5 ~ keV: HMXB ~7-10% LMXB <1-2%

Marat GilfanovExtragalactic surveys, 6-8/11/2006 HMXBs & unresolved part of CXB HMXB contribution can explain ~50% of the unresolved part of the CXB (via contribution of faint normal galaxies)

Marat GilfanovExtragalactic surveys, 6-8/11/2006 Conclusions robust estimate of HMXB contribution to CXB: ~7-10% in the 1-10 keV band significant contribution to unresolved CXB but insufficient to explain all of it LMXB contribution < 1-2%