Study of Spectral Variability of GRS 1915+105 Observed with BeppoSAX.

Details Study of Spectral Variability of GRS 1915+105 Observed with BeppoSAX. Study of Spectral Variability of GRS 1915+105 Observed with BeppoSAX.

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cnoc.conf....4c&link_type=abstract

The Second National Conference on Astrophysics of Compact Objects, held in Bologna (Italy), September 19 - 21, 2001, p. 4

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

The superluminal galactic source GRS 1915+105 has been often observed with the Narrow Field Instruments onboard BeppoSAX, achieving an effective total observation time on source of about 800 ksec in five years. Among the observed phenomenologies, with variable time scales from fractions of seconds to days, we present the results obtained from the spectral analysis of a particular state, in which the X-ray flux shows quasi-periodic oscillations with an average recurrence time of 50 seconds. The long stay of the source in this state, together with the wide spectral band offered by the BeppoSAX NFI, allowed to reach a high statistics in the study of the different spectral components and of their variation across the pulses.

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