NUSTAR, SWIFT, and GROND Observations of the Flaring MEV Blazar PMN J0641-0320

M. Ajello; G. Ghisellini; V. S. Paliya; D. Kocevski; G. Tagliaferri; G. Madejski; A. Rau; P. Schady; J. Greiner; F. Massaro; M. Balokovic; R. Buehler; M. Giomi; L. Marcotulli; F. D'Ammando; D. Stern; S. E. Boggs; Finn Erland Christensen; W. W. Craig; C. J. Hailey; F. A. Harrison; W. W. Zhang

doi:10.3847/0004-637X/826/1/76

NUSTAR, SWIFT, and GROND Observations of the Flaring MEV Blazar PMN J0641-0320

M. Ajello, G. Ghisellini, V. S. Paliya, D. Kocevski, G. Tagliaferri, G. Madejski, A. Rau, P. Schady, J. Greiner, F. Massaro, M. Balokovic, R. Buehler, M. Giomi, L. Marcotulli, F. D'Ammando, D. Stern, S. E. Boggs, Finn Erland Christensen, W. W. Craig, C. J. HaileyF. A. Harrison, W. W. Zhang

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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 similar to 1 up to similar 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.

Original language	English
Article number	76
Journal	Astrophysical Journal
Volume	826
Issue number	1
Number of pages	9
ISSN	0004-637X
DOIs	https://doi.org/10.3847/0004-637X/826/1/76
Publication status	Published - 2016

Keywords

Galaxies: active
Quasars: general
Quasars: individual (PMN J0641-0320)
X-rays: general

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Ajello, M., Ghisellini, G., Paliya, V. S., Kocevski, D., Tagliaferri, G., Madejski, G., Rau, A., Schady, P., Greiner, J., Massaro, F., Balokovic, M., Buehler, R., Giomi, M., Marcotulli, L., D'Ammando, F., Stern, D., Boggs, S. E., Christensen, F. E., Craig, W. W., ... Zhang, W. W. (2016). NUSTAR, SWIFT, and GROND Observations of the Flaring MEV Blazar PMN J0641-0320. Astrophysical Journal, 826(1), Article 76. https://doi.org/10.3847/0004-637X/826/1/76

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title = "NUSTAR, SWIFT, and GROND Observations of the Flaring MEV Blazar PMN J0641-0320",

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 similar to 1 up to similar 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.",

keywords = "Galaxies: active, Quasars: general, Quasars: individual (PMN J0641-0320), X-rays: general",

author = "M. Ajello and G. Ghisellini and Paliya, {V. S.} and D. Kocevski and G. Tagliaferri and G. Madejski and A. Rau and P. Schady and J. Greiner and F. Massaro and M. Balokovic and R. Buehler and M. Giomi and L. Marcotulli and F. D'Ammando and D. Stern and Boggs, {S. E.} and Christensen, {Finn Erland} and Craig, {W. W.} and Hailey, {C. J.} and Harrison, {F. A.} and Zhang, {W. W.}",

year = "2016",

doi = "10.3847/0004-637X/826/1/76",

language = "English",

volume = "826",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

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Ajello, M, Ghisellini, G, Paliya, VS, Kocevski, D, Tagliaferri, G, Madejski, G, Rau, A, Schady, P, Greiner, J, Massaro, F, Balokovic, M, Buehler, R, Giomi, M, Marcotulli, L, D'Ammando, F, Stern, D, Boggs, SE, Christensen, FE, Craig, WW, Hailey, CJ, Harrison, FA & Zhang, WW 2016, 'NUSTAR, SWIFT, and GROND Observations of the Flaring MEV Blazar PMN J0641-0320', Astrophysical Journal, vol. 826, no. 1, 76. https://doi.org/10.3847/0004-637X/826/1/76

TY - JOUR

T1 - NUSTAR, SWIFT, and GROND Observations of the Flaring MEV Blazar PMN J0641-0320

AU - Ajello, M.

AU - Ghisellini, G.

AU - Paliya, V. S.

AU - Kocevski, D.

AU - Tagliaferri, G.

AU - Madejski, G.

AU - Rau, A.

AU - Schady, P.

AU - Greiner, J.

AU - Massaro, F.

AU - Balokovic, M.

AU - Buehler, R.

AU - Giomi, M.

AU - Marcotulli, L.

AU - D'Ammando, F.

AU - Stern, D.

AU - Boggs, S. E.

AU - Christensen, Finn Erland

AU - Craig, W. W.

AU - Hailey, C. J.

AU - Harrison, F. A.

AU - Zhang, W. W.

PY - 2016

Y1 - 2016

N2 - 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 similar to 1 up to similar 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.

AB - 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 similar to 1 up to similar 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.

KW - Galaxies: active

KW - Quasars: general

KW - Quasars: individual (PMN J0641-0320)

KW - X-rays: general

U2 - 10.3847/0004-637X/826/1/76

DO - 10.3847/0004-637X/826/1/76

M3 - Journal article

SN - 0004-637X

VL - 826

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 76

ER -

NUSTAR, SWIFT, and GROND Observations of the Flaring MEV Blazar PMN J0641-0320

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Keywords

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