ROSAT investigation of flaring and activity on Prox CEN

Details ROSAT investigation of flaring and activity on Prox CEN ROSAT investigation of flaring and activity on Prox CEN

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993lock.rept.....h&link_type=abstract

Final Report, 5 May 1992 - 4 May 1993 Lockheed Missiles and Space Co., Palo Alto, CA. Research Lab.

Computer Science

Centaurus Constellation, Data Acquisition, Flare Stars, Rosat Mission, Stellar Coronas, Stellar Flares, Iue, Plasma Heating, Variability

Scientific paper

The objective of this program was to investigate with high sensitivity the low-level flare activity which may underlie coronal heating. This was done. The ROSAT observations of Prox Cen were scheduled for 50 ks spread out from 26 Feb. - 10 Mar. 1992. Unfortunately because of spacecraft problems many of these pointings turned out to contain no useful data or extremely truncated valid data sets. Considerable time was spent trying to determine which of the data would be scientifically useful and which would not. Fortunately, several developments took place to augment the original data in such a way that the scientific goal of advancing the study of flaring and variability was able to be achieved after all. These are as follows: (1) a second round of ROSAT observations was carried out in Feb. 1993 which only came to the attention of the PI in Apr. 1993 when a new data tape arrived; (2) simultaneous IUE observations were requested and obtained; (3) data from the UK WFC are available via the collaboration with Dr. G. Bromage; and (4) the 'cleaned-up' original data set was found to include one major flare and 2 moderate flares. Because of the problems with the original data set, the unexpected acquisition of new data only two months ago, and the availability of IUE and WFC data, an article on Prox Cen for publication is not ready at this time. Such an article is being developed and can be completed as part of ongoing ROSAT research efforts on stellar coronae and flaring.

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