SUMMARY OF PROPOSAL 72054
COLUMBIA UNIVERSITY
550 WEST 120TH STREET
NEW YORK
NY USA 10027
Tel: (212) 854-2554 Fax: (212) 854-8121
Medium: CD ROM
Subject: SUPERNOVA REMNANTS AND GALACTIC DIFFUSE EMISSION
GEMINGA'S COMPLEX X-RAY SPECTRUM AND PULSE PROFILE
ABSTRACT
ASCA made the first detection of the Geminga pulsar in the 2-5 keV band, resolving the nature of its hardest X-rays in favor of nonthermal emission, and discovering a complex new pulse shape at these energies. We now propose to make a longer observation to better characterize Geminga's X-ray spectrum and pulse profile in terms of their thermal and nonthermal components, and also to study Geminga in the 4-10 keV range. These data will bear upon a number of fundamental problems in neutron star physics including high-energy emission from magnetospheric accelerators, interior cooling models, the properties of magnetized atmospheres, polar cap heating by energetic particles, and long-term timing behavior. Several of these issues are discussed in the proposal.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| JOHN MATTOX | BOSTON U. | USA |
| GEORGE PAVLOV | PENN STATE U. | USA |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)GEMINGA | B | 98.4758 | 17.7703 | 200 ks | N | N | P | 0.01000 | 1 |