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RXTE Observations of PKS 2155-304 during the November 1997 Gamma-Ray Outburst

W. T. Vestrand·P. Sreekumar
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Abstract

We present x-ray observations of the nearby BL Lac PKS 2155-304 taken when it was undergoing a GeV/TeV gamma-ray outburst. During the outburst we measured x-ray fluxes in the 2-10 keV band that are the largest ever observed for PKS 2155-304. Comparison of these November 1997 measurements and other x-ray observations made contemporaneously with GeV or TeV gamma-ray observations indicate that x-ray and gamma-ray emissions are correlated. Measurements with x-ray all-sky monitors such as the ASM/RXTE and MOXE can therefore signal the presence of outbursts at gamma-ray energies from PKS 2155-304.

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W. T. Vestrand, P. Sreekumar. 1999-01-28. RXTE Observations of PKS 2155-304 during the November 1997 Gamma-Ray Outburst. https://arxiv.org/abs/astro-ph/9901404

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