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Proceeding Paper

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

1
Eureka Scientific, Inc., 2452 Delmer Street Suite 100, Oakland, CA 94602-3017, USA
2
Universidade de São Paulo, Instituto de Astronomia, Geofísica e Ciências Atmosféricas, São Paulo, SP 05508-090, Brazil
3
Department of Physics and Astronomy, University of Alabama, Box 870324, Tuscaloosa, AL 35487, USA
4
Space Science Center, University of New Hampshire, Durham, NH 03824, USA
*
Author to whom correspondence should be addressed.
Presented at the meeting Recent Progress in Relativistic Astrophysics, Shanghai, China, 6–8 May 2019.
Proceedings 2019, 17(1), 9; https://doi.org/10.3390/proceedings2019017009
Published: 30 September 2019
(This article belongs to the Proceedings of Recent Progress in Relativistic Astrophysics)

Abstract

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.
Keywords: accretion; accretion disks; black hole physics; galaxies: elliptical and lenticular; cD; galaxies: individual (M87); galaxies: nuclei; X-rays: galaxies accretion; accretion disks; black hole physics; galaxies: elliptical and lenticular; cD; galaxies: individual (M87); galaxies: nuclei; X-rays: galaxies

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MDPI and ACS Style

Wong, K.-W.; Nemmen, R.S.; Irwin, J.A.; Lin, D. A New Chapter in Hard X-rays of the M87 AGN. Proceedings 2019, 17, 9. https://doi.org/10.3390/proceedings2019017009

AMA Style

Wong K-W, Nemmen RS, Irwin JA, Lin D. A New Chapter in Hard X-rays of the M87 AGN. Proceedings. 2019; 17(1):9. https://doi.org/10.3390/proceedings2019017009

Chicago/Turabian Style

Wong, Ka-Wah, Rodrigo S. Nemmen, Jimmy A. Irwin, and Dacheng Lin. 2019. "A New Chapter in Hard X-rays of the M87 AGN" Proceedings 17, no. 1: 9. https://doi.org/10.3390/proceedings2019017009

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