SUMMARY OF PROPOSAL 52006
UNIVERSITY OF COLORADO
CAMPUS BOX 389
BOULDER
CO USA 80309-0389
Tel: (303) 492-7810 Fax: (303) 492-4052
Medium: 5GB8MM
Subject: STARS
COORDINATED ASCA OBSERVATIONS OF CORONAL STRUCTURE AND FLARES ON THE RS CVN BINARY SIGMA CRB
ABSTRACT
ASCA observations of the RS CVn binary Sigma CrB lasting two binary orbits (2.3 days elapsed time) are requested as part of a coordinated satellite and ground-based study of coronal structure, abundances, and flaring within this system. Simultaneous multiwavelength observations of flares and other coronal variability offer an extremely powerful technique to determine the physical processes controlling thermal and nonthermal coronal plasmas. We shall investigate the coronal temporal variability and model the quiescent and flaring plasma conditions. Flare elemental abundance variations will be quantified. Sigma CrB is the best target to study extreme coronal activity on solar-like dwarf stars.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| MARC GAGNE | JILA, U. OF COLORADO | USA |
| ROBERT STERN | LOCKHEED-MARTIN | USA |
| TOM AYRES | CASA, U. OF COLORADO | USA |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)SIGMA CRB | 2 | 243.6700 | 33.8585 | 100 ks | Y | N | P | 3.50000 | 1 |
TARGET 1
OBSERVATION TO BE COORDINATED WITH EUVE, XTE, AND GROUND-BASED TELESCOPES. OBSERVATIONS SHOULD BE SCHEDULED IN THE INTERVAL 1997 FEB 26 - MAR 17 WHEN ALL THREE SATELLITES CAN OBSERVE SIGMA CRB.
COORDINATED OBSERVATION: START: Feb 26,1997 at 00STOP: Mar 17,1997 at 00