A New Chapter in Hard X-rays of the M87 AGN

Ka-Wah Wong; Rodrigo  S. Nemmen; Jimmy  A. Irwin; Dacheng Lin

doi:10.3390/proceedings2019017009

Proceedings (Sep 2019)

A New Chapter in Hard X-rays of the M87 AGN

Ka-Wah Wong,
Rodrigo S. Nemmen,
Jimmy A. Irwin,
Dacheng Lin

Affiliations

Ka-Wah Wong: Eureka Scientific, Inc., 2452 Delmer Street Suite 100, Oakland, CA 94602-3017, USA
Rodrigo S. Nemmen: Universidade de São Paulo, Instituto de Astronomia, Geofísica e Ciências Atmosféricas, São Paulo, SP 05508-090, Brazil
Jimmy A. Irwin: Department of Physics and Astronomy, University of Alabama, Box 870324, Tuscaloosa, AL 35487, USA
Dacheng Lin: Space Science Center, University of New Hampshire, Durham, NH 03824, USA

DOI: https://doi.org/10.3390/proceedings2019017009
Journal volume & issue: Vol. 17, no. 1
p. 9

Abstract

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The nearby M87 hosts an exceptional relativistic jet. It has been regularly monitored in radio to TeV bands, but little has been done in hard X-rays ≳10 keV. For the first time, we have successfully detected hard X-rays up to 40 keV from its X-ray core with joint Chandra and NuSTAR observations, providing important insights to the X-ray origins: from the unresolved jet or the accretion flow. We found that the hard X-ray emission is significantly lower than that predicted by synchrotron self-Compton models introduced to explain very-high-energy γ -ray emission above a GeV. We discuss recent models to understand these high energy emission processes.

Published in Proceedings

ISSN: 2504-3900 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: General Works
Website: http://www.mdpi.com/journal/proceedings

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