SUMMARY OF PROPOSAL 53004
PAUL SCHERRER INSTITUTE
AG SWITZ CH-5232
VILLIGEN PSI
BRUGGERSTR.
Tel: +41 - 1 - 632 71 29 Fax: +41 - 1 - 632 12 05
Medium: 4GBDAT
Subject: STARS
ORBITAL MONITORING OF HR1099 AND UX ARI
ABSTRACT
We propose to use ASCA as a critical element in a comprehensive study of the energetics in the outer atmospheres of two extremely active RS CVn binary stars. ASCA will monitor the soft X-ray emission from the coronal plasma over part of the orbital periods; the information will be used to derive estimates of cooling losses, obtain specific information on flare heating, and infer the distribution and vertical structure of the emitting plasma layers. In parallel, we will perform a multiwavelength observing campaign with the NRAO VLBA and VLA radio telescopes; these will yield high-sensitivity spatially-resolved images of nonthermal coronal plasma components. We will study the interaction between thermal and nonthermal plasmas in quiescence and during flares.
CO-INVESTIGATORS
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)UX ARI | 3 | 51.6458 | 28.7150 | 60 ks | N | N | P | 10.00000 | 1 |
TARGET 1
PART OF A COORDINATED CAMPAIGN. WE REQUEST OBSERVING TIME IN THE WINTER VISIBILITY WINDOW (NON-TIME-CRITICAL).