6533b870fe1ef96bd12cf9c2

RESEARCH PRODUCT

X-Ray Spectral Variability of 3C273

Joachim TrümperRüdiger StaubertD. MolteniMartin J. L. TurnerT. Courvoisier

subject

PhysicsSpectral indexX-ray astronomyX-rayCompton scatteringAstronomyFluxQuasarAstrophysicsPower lawX ray spectra

description

3C273 has been monitored by EXOSAT over the period December 1983 to June 1984 in 4 observations. In the December observation the flux was high and the spectrum showed a power law index of 1.5 changing to 0.9 at~8 keV. In subsequent observations the flux dropped to~40% of its original value and the hard tail disappeared. In the last observation the LE flux increased by a factor of 2 with no accompanying ME flux increase.

yearjournalcountryeditionlanguage
1985-01-01
https://doi.org/10.1007/978-94-009-5448-9_85