SUMMARY OF PROPOSAL 62084

MR. JONATHAN W. KEOHANE
JONATHAN@CASSIOPEIA.GSFC.NASA.GOV

NASA/GSFC
CODE 662, GODDARD SPACE FLIGHT CENTER
GREENBELT
MD USA 20771
Tel: (301) 286-2547 Fax: (301) 286-1684
Medium: 5GB8MM
Subject: SUPERNOVA REMNANTS AND GALACTIC DIFFUSE EMISSION

WHAT IS THE EXTENT OF IC 443'S HARD EMISSION?


ABSTRACT

We have discovered two regions of hard X-ray emission in the supernova remnant IC 443, coinciding with where its radio-bright shell overlaps a ring of molecular clouds. We have argued that the X-rays from these features are synchrotron emission from cosmic ray electrons with energies of ~10 TeV. Unfortunately, these hard features were at the edge of the ASCA GIS field of view during the previous observation, and appear to extend beyond it. We propose a 40 ks observation primarily to determine whether the hard X-ray ridge encompasses the entire region of shock/cloud interaction. In addition we will obtain the first SIS spectrum of the known hard X-ray regions.

CO-INVESTIGATORS
CO-I NAME INSTITUTE COUNTRY
ROBERT PETRENASA/GSFCUSA
STEVEN STURNERNASA/GSFC/USRAUSA
ERIC GOTTHELFNASA/GSFC/USRAUSA
GLENN ALLENNASA/GSFC/NRCUSA

TARGETS

TARGET NAMEPRIRADECTIMETCOFFGISSIS CNTOBS
1)IC443
1
94.4167 22.3042 40 ksN
N
P
0.75000
1

TARGET 1

OUR OBSERVATION NEEDS TO TAKE PLACE IN THE SPRING, AS OPPOSED TO THE FALL, TO GIVE US THE CORRECT RANGE OF ROLL ANGLE.