skip to main content

Title: Black Hole Accretion and X-Ray Variability in AGN

Active Galactic Nuclei (AGN) have very luminous centers which are so bright that the surrounding stars can not adequately account for the energy emission of AGN. One of the most accepted explanations for this energy release is black hole accretion. These black holes accrete near by gas and dust, and as a result gravitational potential is converted to energy which is released. In order to probe the accretion mechanism which lies close to the black hole, short time scale X-ray variability is analyzed. The very short time scale variability will increase understanding of the processes that occur in the heart of galaxies. Data from the ASCA X-ray telescope was reduced and analyzed using the programs FTOOLS, XSELCT, and ASCASCREEN. Light curves and event lists were generated for long term observations of different AGN which were sent to collaborators for further analysis using the event time arrivals. The analysis will compare accretion and jet dominated AGN and will provide use with an understanding of how short scale time variability can relate to the mechanism very close to black holes buried within AGN.
Authors:
Publication Date:
OSTI Identifier:
833107
Report Number(s):
SLAC-TN-04-053
TRN: US200430%%1165
DOE Contract Number:
AC03-76SF00515
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 3 Sep 2004
Research Org:
Stanford Linear Accelerator Center, Menlo Park, CA (US)
Sponsoring Org:
USDOE Office of Science (US)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BLACK HOLES; GALAXIES; NUCLEI; PROBES; STARS; TELESCOPES