neutron stars - Universität Heidelberg

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RXJ 1856: Neutron Star or Quark Star? (Ho et al. (2007)) F λ (ergs s −1 cm −2 A −1 ) 10 −12 10 −13 10 −14 10 −15 10 −16 10 −17 10 −18 10 −19 10 −20 10 1 XMM/RGS CXO/LETG EUVE 10 2 Wavelength (A) 10 3 HST/STIS VLT/FORS1 HST/STIS CXO/LETG XMM/RGS EUVE VLT/FORS2 HST/WFPC2 VLT/FORS1 two-temperature black-body fit implies a lower limit for radiation radius: R∞ = R/ � 1 − 2GM/R ≈ 17 km (d/140 pc) thin magmetized H-atmosphere on condensed iron core (Ho et al.): redshift zg ≈ 0.22: R ≈ 14 km and M ≈ 1.55M⊙ not necessarily a quark star! 10 4 – p.16
X-Ray burster binary systems of a neutron star with an ordinary star accreting material on the neutron star ignites nuclear burning explosion on the surface of the neutron star: x-ray burst red shifted spectral lines measured! (z = 0.35 → M/M⊙ = 1.5 (R/10 km)) (Cottam, Paerels, Mendez (2002)) – p.17
Page 1 and 2: Neutron Stars, Quark Stars and the
Page 3 and 4: UniSpiegel, Universität Heidelberg
Page 5 and 6: Rhein-Neckar-Zeitung, 09.01.2009 my
Page 7 and 8: Observational Data on Neutron Stars
Page 9 and 10: Neutron Stars Movie (seven still im
Page 11 and 12: Masses of Pulsars (Stairs, 2006) mo
Page 13 and 14: How To Measure Masses AND Radii of
Page 15 and 16: Constraints on the Mass-Radius Rela
Page 17: Neutron Star versus Strange Quark S
Page 21 and 22: Properties of Neutron Stars and Qua
Page 23 and 24: Structure of a Neutron Star — the
Page 25 and 26: Quark matter in the NJL model p = 1
Page 27 and 28: Mass-radius and maximum density of
Page 29 and 30: Quark star twins? (Fraga, JSB, Pisa
Page 31 and 32: Signals for the QCD Phase Transitio
Page 33 and 34: Phase Transition to Quark Matter fo
Page 35 and 36: Check: Mass-Radius Diagram of Cold
Page 37 and 38: Implications for Supernovae - Explo
Page 39 and 40: Implications for Supernovae - Explo
Page 41 and 42: Summary quark matter can be present

neutron stars - Universität Heidelberg

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