Birth of a relativistic outflow in the unusual γ-ray transient Swift J164449.3+573451

B. A. Zauderer (), E. Berger (), A. M. Soderberg, A. Loeb, R. Narayan, D. A. Frail, G. R. Petitpas, A. Brunthaler, R. Chornock, J. M. Carpenter, G. G. Pooley, K. Mooley, S. R. Kulkarni, R. Margutti, D. B. Fox, E. Nakar, N. A. Patel, N. H. Volgenau, T. L. Culverhouse, M. F. Bietenholz, M. P. Rupen, W. Max-Moerbeck, A. C. S. Readhead, J. Richards, M. Shepherd, S. Storm and C. L. H. Hull
Additional contact information
B. A. Zauderer: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street
E. Berger: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street
A. M. Soderberg: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street
A. Loeb: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street
R. Narayan: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street
D. A. Frail: National Radio Astronomy Observatory, PO Box 0
G. R. Petitpas: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street
A. Brunthaler: Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
R. Chornock: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street
J. M. Carpenter: California Institute of Technology
G. G. Pooley: Mullard Radio Observatory, Cavendish Laboratory, Cambridge CB3 0HE, UK
K. Mooley: California Institute of Technology
S. R. Kulkarni: California Institute of Technology
R. Margutti: INAF Osservatorio Astronomico di Brera, via Bianchi 46, Merate 23807, Italy
D. B. Fox: Pennsylvania State University, University Park
E. Nakar: School of Physics & Astronomy, Tel Aviv University
N. A. Patel: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street
N. H. Volgenau: California Institute of Technology, Owens Valley Radio Observatory
T. L. Culverhouse: California Institute of Technology, Owens Valley Radio Observatory
M. F. Bietenholz: Hartebeesthoek Radio Astronomy Observatory, PO Box 443, Krugersdorp 1740, South Africa
M. P. Rupen: National Radio Astronomy Observatory, PO Box 0
W. Max-Moerbeck: California Institute of Technology
A. C. S. Readhead: California Institute of Technology
J. Richards: California Institute of Technology
M. Shepherd: California Institute of Technology
S. Storm: University of Maryland, College Park, Maryland 20742, USA
C. L. H. Hull: University of California

Nature, 2011, vol. 476, issue 7361, 425-428

Abstract: Birth of a black-hole relativistic jet Two groups report observations of the X-ray source Swift J164449.3+573451, which was discovered when it triggered the Swift Burst Alert Telescope on 28 March 2011. Burrows et al. report that the source has increased in brightness in the X-ray band more than 10,000-fold since 1990, and by more than 100-fold since early 2010. They conclude that we are observing the onset of relativistic jet activity from a supermassive black hole. Zauderer et al. arrive at a similar conclusion based on their observation of a radio transient associated with the source, and extensive monitoring at centimetre to millimetre wavelengths during the first month of its evolution. They estimate the mass of the black hole at around 106 solar masses.

Date: 2011
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DOI: 10.1038/nature10366

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