F. Pfefferkorn, Th. Boller, V. Burwitz, P. Predehl
Published 2001-06-12Version 1
The narrow-line Seyfert 1 galaxy (NLS1) IRAS 13224-3809 has been observed with the CHANDRA High Resolution Camera (HRC-I) for 12 ksec on February, 2, 2000. The source was proposed for CHANDRA observations to precisely determine the X-ray centroid position and to investigate the timing properties of the most X-ray variable Seyfert galaxy. The position derived from CHANDRA confirms that the X-ray emission is associated with IRAS 13224-3809. The CHANDRA HRC-I light curve shows indications for a possible presence of a quasi-periodic oscillation. The strongest signal is found at 2500 sec. Accretion disk instabilities may provide a plausible explanation for the quasi-periodic oscillations.
Comments: 5 pages, 10 figures, 1 table, proceedings paper for the "MAXI workshop on AGN variability" held in Nikko, Japan (March 10-11, 2001), also available at http://www.xray.mpe.mpg.de/~pfefferk/research/proceedings.html
Chandra observation of Abell 1689: New determination of mass distribution and comparison to lensing measurements
Chandra Observation of the Interaction of the Radio Source and Cooling Core in Abell 2063
Chandra observations of the X-ray jet in 3C66B
