Computer Science
Scientific paper
Sep 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003cxo..prop.1618m&link_type=abstract
Chandra Proposal ID #05708168
Computer Science
Chandra Proposal Id #05708168
Scientific paper
NGC 4395 is the least luminous Seyfert 1 galaxy known, and one of the most X-ray variable. Its extremely small BH mass implies light-crossing timescales 100-1000 times shorter than in luminous AGN. A multiwavelength reverberation mapping campaign on this object spanning the UV (HST), optical (KPNO 4m & Lick 3m), and IR (KPNO 2.1m & IRTF 3m) has been approved for two 8-hr periods in April 2004. We propose to use this unique opportunity to conduct simultaneous monitoring (2 x 30ks) with Chandra. A previous Chandra observation revealed extremely rapid, large-amplitude variability and dramatic long-term spectral variability. Our program will allow us to compare for the first time the X-ray variability in an AGN of this luminosity to the UV/optical/IR continuum and emission-line variability. Apart from indicating the state of the ionizing source during the reverberation campaign, the Chandra data can shed new light on the accretion and emission processes in this enigmatic AGN.
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