SUMMARY OF PROPOSAL 71192
TOKYO METROPOLITAN UNIVERSITY
1-1, MINAMI-OSAWA
HACHIOJI-SHI
TOKYO JAPAN 192-0397
Tel: +81-426-77-2485 Fax: +81-426-77-2483
Medium: 4GBDAT
Subject: COSMIC X-RAY BACKGROUND DEEP SURVEYS AND OTHER
A DEEP OBSERVATION OF A DARK LENSING CLUSTER RXJ105346.6+573517 IN THE LOCKMAN HOLE
ABSTRACT
We propose total 160 ks observation of a dark lensing cluster of galaxy RXJ105346.6+573517, which has been detected in the ROSAT ultra-deep HRI survey of the Lockman Hole. This object has an unusual double-humped extended X-ray profile and the brightest galaxy (z=2.570) close to the center of the eastern emission peak shows a gravitationally lensed arc, confirming this object as a cluster, but no significant redshift association of galaxies are found. We aim to have an X-ray spectrum of this object with ASCA and determine its temperature and possibly redshift. We also emphasize that this additional observing time of the Lockman Hole enables us to gain a lot more information on all other sources in the field, in particular time variability.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| GUENTHER HASINGER | A.I.P. | GERMANY |
| TAKAMITSU MIYAJI | A.I.P. | GERMANY |
| YASUSHI OGASAKA | NAGOYA-U | JAPAN |
| YOSHIHIRO UEDA | ISAS | JAPAN |
| TADAYUKI TAKAHASHI | ISAS | JAPAN |
| HAJIME INOUE | ISAS | JAPAN |
| TAKAYA OHASHI | TOKYO METRO-U | JAPAN |
| NORIKO YAMASAKI | TOKYO METRO-U | JAPAN |
| MAKOTO HATTORI | TOHOKU-U | JAPAN |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)RX J105346.6+573517 | B | 163.4313 | 57.5920 | 100 ks | N | Y | P | 0.00100 | 2 |