Extended hard-X-ray emission in the inner few parsecs of the Galaxy

Kerstin Perez (), Charles J. Hailey, Franz E. Bauer, Roman A. Krivonos, Kaya Mori, Frederick K. Baganoff, Nicolas M. Barrière, Steven E. Boggs, Finn E. Christensen, William W. Craig, Brian W. Grefenstette, Jonathan E. Grindlay, Fiona A. Harrison, Jaesub Hong, Kristin K. Madsen, Melania Nynka, Daniel Stern, John A. Tomsick, Daniel R. Wik, Shuo Zhang, William W. Zhang and Andreas Zoglauer
Additional contact information
Kerstin Perez: Columbia Astrophysics Laboratory, Columbia University
Charles J. Hailey: Columbia Astrophysics Laboratory, Columbia University
Franz E. Bauer: Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile
Roman A. Krivonos: Space Science Laboratory, UC Berkeley
Kaya Mori: Columbia Astrophysics Laboratory, Columbia University
Frederick K. Baganoff: Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology
Nicolas M. Barrière: Space Science Laboratory, UC Berkeley
Steven E. Boggs: Space Science Laboratory, UC Berkeley
Finn E. Christensen: DTU Space, National Space Institute, Technical University of Denmark
William W. Craig: Space Science Laboratory, UC Berkeley
Brian W. Grefenstette: Cahill Center for Astronomy and Astrophysics, 1200 East California Boulevard, MC 290-17, California Institute of Technology
Jonathan E. Grindlay: Harvard-Smithsonian Center for Astrophysics
Fiona A. Harrison: Cahill Center for Astronomy and Astrophysics, 1200 East California Boulevard, MC 290-17, California Institute of Technology
Jaesub Hong: Harvard-Smithsonian Center for Astrophysics
Kristin K. Madsen: Cahill Center for Astronomy and Astrophysics, 1200 East California Boulevard, MC 290-17, California Institute of Technology
Melania Nynka: Columbia Astrophysics Laboratory, Columbia University
Daniel Stern: Jet Propulsion Laboratory, California Institute of Technology
John A. Tomsick: Space Science Laboratory, UC Berkeley
Daniel R. Wik: NASA Goddard Space Flight Center
Shuo Zhang: Columbia Astrophysics Laboratory, Columbia University
William W. Zhang: NASA Goddard Space Flight Center
Andreas Zoglauer: Space Science Laboratory, UC Berkeley

Nature, 2015, vol. 520, issue 7549, 646-649

Abstract: A distinct hard-X-ray emission component is reported within the central four parsecs by eight parsecs of the Galaxy; this emission is more sharply peaked toward the Galactic Centre than is the surface brightness of the soft X-ray population, and all the interpretations of this emission pose significant challenges to our understanding of stellar evolution, binary formation and cosmic-ray production in the Galactic Centre.

Date: 2015
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DOI: 10.1038/nature14353

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