SIMBAD references

2013MNRAS.429.2917F - Mon. Not. R. Astron. Soc., 429, 2917-2923 (2013/March-2)

Long XMM observation of the narrow-line Seyfert 1 galaxy IRAS 13224-3809: rapid variability, high spin and a soft lag.

FABIAN A.C., KARA E., WALTON D.J., WILKINS D.R., ROSS R.R., LOZANOV K., UTTLEY P., GALLO L.C., ZOGHBI A., MINIUTTI G., BOLLER T., BRANDT W.N., CACKETT E.M., CHIANG C.-Y., DWELLY T., MALZAC J., MILLER J.M., NARDINI E., PONTI G., REIS R.C., REYNOLDS C.S., STEINER J.F., TANAKA Y. and YOUNG A.J.

Abstract (from CDS):

The narrow-line Seyfert 1 galaxy IRAS13224-3809 has been observed with XMM-Newton for 500 ks. The source is rapidly variable on time-scales down to a few 100s. The spectrum shows strong broad Fe - K and L emission features which are interpreted as arising from reflection from the inner parts of an accretion disc around a rapidly spinning black hole. Assuming a power law emissivity for the reflected flux and that the innermost radius corresponds to the innermost stable circular orbit, the black hole spin is measured to be 0.989 with a statistical precision better than 1 per cent. Systematic uncertainties are discussed. A soft X-ray lag of 100s confirms this scenario. The bulk of the power-law continuum source is located at a radius of 2-3 gravitational radii.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): accretion, accretion discs - black hole physics - line: profiles - X-rays: general

Simbad objects: 2

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