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X-ray binaries and CXB

X-ray binaries and CXB. Marat Gilfanov, Igor Prokopenko & Rashid Sunyaev. MPA (Garching), IKI (Moscow). X-ray binaries. HMXB - star formation. LMXB - stellar mass. X-ray binaries & cosmic SF. Cosmic star formation. stellar mass. (from Nagamine et al., 2006). Previous work:.

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X-ray binaries and CXB

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

  2. X-ray binaries HMXB - star formation LMXB - stellar mass Extragalactic surveys, 6-8/11/2006

  3. X-ray binaries & cosmic SF Cosmic star formation stellar mass (from Nagamine et al., 2006) Extragalactic surveys, 6-8/11/2006

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

  5. HMXB • SFR(z) from Hopkins & Beacom’06, Nagamine et al.’06 • H0=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: 0.1-100 Msun, Salpeter IMF Extragalactic surveys, 6-8/11/2006

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

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

  8. Contribution to CXB <zHMXB> ~ 1.5 <zLMXB> ~ 0.5 2-10 keV: HMXB ~7-10% LMXB <1-2% Extragalactic surveys, 6-8/11/2006

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

  10. 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% Extragalactic surveys, 6-8/11/2006

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