SUMMARY OF PROPOSAL 82051

DR. CHRYSSA KOUVELIOTOU
CHRYSSA.KOUVELIOTOU@MSFC.NASA.GOV

UNIVERSITIES SPACE RESEARCH ASSOCIATION

HUNTSVILLE
ALABAMA USA 35812
Tel: (256) 544-7711 Fax: (256) 544-5800
Medium: CD ROM
Subject: STARS

OBSERVATIONS OF TWO SOFT GAMMA REPEATERS, SGR 1627-41 AND SGR 1806-20


ABSTRACT

Soft gamma repeaters are rare sources of transient gamma ray emission and persistent X-ray emission; three of the four known are also X-ray pulsars. Recently, it has been found that both the X-ray flux and spin-down rate of SGR 1900+14 are not constant and the spectrum contains a thermal component. We propose to investigate these possibilities for SGR 1806-20, discover/confirm pulsations in SGR 1627-41, and confirm the fading of SGR 1627-41, and search for a thermal component in the SGR 1627-41 spectrum. Furthermore, we propose to search for proton cyclotron line features in the spectrum of both sources which would provide a confirmation of the magnetar model.

CO-INVESTIGATORS
CO-I NAME INSTITUTE COUNTRY
PETER WOODSUAHUSA
JAN VAN PARADIJSUAHUSA
KEVIN HURLEYUCBUSA
GOGUS ERSINUAHUSA
MICHAEL BRIGGSUAHUSA
PENG LIUCBUSA
CHRIS THOMPSONUNCUSA
ROB DUNCANUTUSA
LARS BILDSTENITP/UCSBUSA

TARGETS

TARGET NAMEPRIRADECTIMETCOFFGISSIS CNTOBS
1)SGR 1806-20
B
272.1642-20.4106
750 ks
N
N
P
0.07500
1