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Title: NuSTAR, Swift, and GROND Observations of the Flaring MeV Blazar PMN J0641-0320
Authors: Ajello, M
Ghisellini, G
Paliya, Vaidehi S
Kocevski, D
Tagliaferri, G
Madejski, G
Rau, A
Schady, P
Greiner, J
Massaro, F
Balokovic, M
Buhler, R
Giomi, M
Marcotulli, L
D'Ammando, F
Stern, D
Boggs, S. E
Christensen, F. E
Craig, W. W
Hailey, C. J
Harrison, F. A
Zhang, W. W
Keywords: Galaxies: active;Quasars: general;Quasars: individual;PMN J0641–0320;X-rays: general
Issue Date: 20-Jul-2016
Publisher: IOP Publishing
Citation: The Astrophysical Journal, Vol. 826, No. 1, 76
Abstract: MeV blazars are a sub-population of the blazar family, exhibiting larger-than-average jet powers, accretion luminosities, and black hole masses. Because of their extremely hard X-ray continua, these objects are best studied in the X-ray domain. Here, we report on the discovery by the Fermi Large Area Telescope and subsequent follow-up observations with NuSTAR, Swift, and GROND of a new member of the MeV blazar family: PMN J0641−0320. Our optical spectroscopy provides confirmation that this is a flat-spectrum radio quasar located at a redshift of z = 1.196. Its very hard NuSTAR spectrum (power-law photon index of ~1 up to ~80 keV) indicates that the emission is produced via inverse Compton scattering off of photons coming from outside the jet. The overall spectral energy distribution of PMN J0641−0320 is typical of powerful blazars and, using a simple one-zone leptonic emission model, we infer that the emission region is located either inside the broad line region or within the dusty torus.
Description: Restricted Access
ISSN: 0004-637X
???metadata.dc.rights???: © The American Astronomical Society
Appears in Collections:IIAP Publications

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