SUMMARY OF PROPOSAL 72115

DR. PHILIP RICHARD MALONEY
MALONEY@CASA.COLORADO.EDU

UNIVERSITY OF COLORADO

BOULDER
CO USA 80309-0389
Tel: (303) 492-7675 Fax: (303) 492-7178
Medium: CD ROM
Subject: AGN

X-RAY SPECTROSCOPY OF THE ULTRALUMINOUS INFRARED GALAXIES MKN 231 AND ARP 220: BURIED AGN?


ABSTRACT

We request moderately long (100 ksec) observations of the two prototypical ultraluminous infrared galaxies (ULIRG) Mrk 231 and Arp 220 (infrared luminosities greater than 10^12 solar luminosities). The primary goal is to search for heavily obscured (i.e., Compton-thick), X-ray luminous AGN in these two galaxies, by looking for the spectral signatures of reflection-dominated X-ray sources. Detection of such AGN (an example of which is seen in the ULIRG NGC 6240) would have major implications for the dominant energy source in this important class of galaxies.

CO-INVESTIGATORS
CO-I NAME INSTITUTE COUNTRY
CHRISTOPHER REYNOLDSJILA, BOULDER COUSA

TARGETS

TARGET NAMEPRIRADECTIMETCOFFGISSIS CNTOBS
1)MKN 231
B
194.0592 56.8737
100 ks
N
N
P
0.01000
1