SPECTRAL FEATURES FROM X-RAY ILLUMINATED ACCRETION DISCS AS DIAGNOSTICS OF THE BLACK HOLE ANGULAR MOMENTUM


Poster presented at the
X-Ray Astronomy '999 Meeting,
Bologna, September 1999
 
 
Andrea Martocchia (1), Giorgio Matt (2) and Vladimir Karas (3,1)
 
1 - SISSA-ISAS, Via Beirut 2/4, I--34014 Trieste (Italy); E-mail: martok@sissa.it

2 - Dipartimento di Fisica, Universita' degli Studi "ROMA TRE"
Via della Vasca Navale 84, I--00146 Roma (Italy); E-mail: matt@haendel.fis.uniroma3.it

3 - Astronomical Institute of the Charles University,
Faculty of Mathematics and Physics,
V Holesovickach 2, CZ--180 00 Praha (Czech Republic); E-mail: vladimir.karas@mff.cuni.cz

 

Abstract


Detailed calculations of the relativistic effects acting on both the reflection continuum and the iron line from accretion discs around rotating black holes are performed using a method which takes into account the relativistic transfer of both illumination and reprocessed photons. These may be used as a diagnostics of the black hole spin when data from high troughput X-ray missions, like Constellation-X, will be available.