SUMMARY OF PROPOSAL 61233
NASA/GSFC/JSPS
MD USA 20771
GREENBELT
Tel: 1-301-286-3719 Fax: 1-301-286-1684
Medium: 4GBDAT
Subject: COSMIC X-RAY BACKGROUND DEEP SURVEYS AND OTHER
STATISTICAL CROSS-CORRELATION STUDY OF THE COSMIC X-RAY BACKGROUND IN OPTICAL DEEP MULTICOLOR PHOTOMETRY FIELDS
ABSTRACT
The origin of the Cosmic X-ray Background(CXB) is still now an open question in the X-ray astronomy. Previous observations in soft X-ray band have resolved more than half of the CXB flux to known classes of objects such as AGNs and QSOs, while there sill remains a significant part of the CXB flux unresolved whose constituents may be unknown X-ray sources. We propose short exposure observations of deep optical survey fields where we have well calibrated optical catalogs, and to take cross-correlations of measured X-ray flux distributions to various color-selected subsets of optical objects. Our preliminary analysis of SA68 field shows clear correlation between X-ray surface brightness and optical quasar number distribution.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| TAKAMITSU MIYAJI | AIP | GERMANY |
| ALEXANDER SZALAY | JOHNS HOPKINS UNIV. | USA |
| ANDREW CONNOLLY | JOHNS HOPKINS UNIV. | USA |
| HAJIME INOUE | ISAS | JAPAN |
| TSUNEO KII | ISAS | JAPAN |
| ELIHU BOLDT | NASA/GSFC | USA |
| YUZURU TAWARA | NAGOYA UNIV. | JAPAN |
| HIDEYO KUNIEDA | NAGOYA UNIV. | JAPAN |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)LYNX-2 | 3 | 131.3000 | 44.6156 | 40 ks | N | N | P | 0.07000 | 1 |
TARGET 1
SIS COUNT RATE IS FOR WHOLE SENSOR. USE LEVEL DISCRI IF REQUIRED.