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Title: High-redshift Blazars through NuSTAR Eyes

Abstract

The most powerful sources among the blazar family are MeV blazars. Often detected at z > 2, they usually display high X- and γ -ray luminosities, larger-than-average jet powers, and black hole masses ≳10{sup 9} M {sub ☉}. In the present work, we perform a multiwavelength study of three high-redshift blazars: 3FGL J0325.5+2223 ( z = 2.06), 3FGL J0449.0+1121 ( z = 2.15), and 3FGL J0453.2−2808 ( z = 2.56), analyzing quasi-simultaneous data from GROND, Swift -UVOT and XRT, Nuclear Spectroscopic Telescope Array ( NuSTAR ), and Fermi -LAT. Our main focus is on the hard X-ray band recently unveiled by NuSTAR (3–79 keV) where these objects show a hard spectrum that enables us to constrain the inverse Compton (IC) peak and the jet power. We found that all three targets resemble the most powerful blazars, with the synchrotron peak located in the submillimeter range and the IC peak in the MeV range, and therefore belong to the MeV blazar class. Using a simple one-zone leptonic emission model to reproduce the spectral energy distributions, we conclude that a simple combination of synchrotron and accretion disk emission reproduces the infrared–optical spectra, while the X-ray to γ -ray part is well reproducedmore » by the IC scattering of low-energy photons supplied by the broad-line region. The black hole masses for each of the three sources are calculated to be ≳4 × 10{sup 8} M {sub ☉}. The three studied sources have jet power at the level of, or beyond, the accretion luminosity.« less

Authors:
; ; ; ;  [1];  [2]; ; ;  [3];  [4];  [5]
  1. Department of Physics and Astronomy, Clemson University, Kinard Lab of Physics, Clemson, SC 29634-0978 (United States)
  2. Agenzia Spaziale Italiana (ASI) Science Data Center, I-00133 Roma (Italy)
  3. Max Planck Institute für extraterrestrische Physik, Giessenbachstrasse 1, D-85748 Garching (Germany)
  4. Cahill Center for Astronomy and Astrophysics, California Institute of Technology, Pasadena, CA 91125 (United States)
  5. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States)
Publication Date:
OSTI Identifier:
22663689
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 839; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCRETION DISKS; AVAILABILITY; BLACK HOLES; COSMIC GAMMA SOURCES; EMISSION; ENERGY SPECTRA; GALAXIES; GAMMA RADIATION; HARD X RADIATION; KEV RANGE; LUMINOSITY; MASS; MEV RANGE; PHOTONS; QUASARS; RED SHIFT; TELESCOPES

Citation Formats

Marcotulli, L., Paliya, V. S., Ajello, M., Kaur, A., Hartmann, D. H., Gasparrini, D., Greiner, J., Rau, A., Schady, P., Baloković, M., Stern, D., and Madejski, G., E-mail: lmarcot@g.clemson.edu, E-mail: vpaliya@g.clemson.edu. High-redshift Blazars through NuSTAR Eyes. United States: N. p., 2017. Web. doi:10.3847/1538-4357/AA6A17.
Marcotulli, L., Paliya, V. S., Ajello, M., Kaur, A., Hartmann, D. H., Gasparrini, D., Greiner, J., Rau, A., Schady, P., Baloković, M., Stern, D., & Madejski, G., E-mail: lmarcot@g.clemson.edu, E-mail: vpaliya@g.clemson.edu. High-redshift Blazars through NuSTAR Eyes. United States. doi:10.3847/1538-4357/AA6A17.
Marcotulli, L., Paliya, V. S., Ajello, M., Kaur, A., Hartmann, D. H., Gasparrini, D., Greiner, J., Rau, A., Schady, P., Baloković, M., Stern, D., and Madejski, G., E-mail: lmarcot@g.clemson.edu, E-mail: vpaliya@g.clemson.edu. Thu . "High-redshift Blazars through NuSTAR Eyes". United States. doi:10.3847/1538-4357/AA6A17.
@article{osti_22663689,
title = {High-redshift Blazars through NuSTAR Eyes},
author = {Marcotulli, L. and Paliya, V. S. and Ajello, M. and Kaur, A. and Hartmann, D. H. and Gasparrini, D. and Greiner, J. and Rau, A. and Schady, P. and Baloković, M. and Stern, D. and Madejski, G., E-mail: lmarcot@g.clemson.edu, E-mail: vpaliya@g.clemson.edu},
abstractNote = {The most powerful sources among the blazar family are MeV blazars. Often detected at z > 2, they usually display high X- and γ -ray luminosities, larger-than-average jet powers, and black hole masses ≳10{sup 9} M {sub ☉}. In the present work, we perform a multiwavelength study of three high-redshift blazars: 3FGL J0325.5+2223 ( z = 2.06), 3FGL J0449.0+1121 ( z = 2.15), and 3FGL J0453.2−2808 ( z = 2.56), analyzing quasi-simultaneous data from GROND, Swift -UVOT and XRT, Nuclear Spectroscopic Telescope Array ( NuSTAR ), and Fermi -LAT. Our main focus is on the hard X-ray band recently unveiled by NuSTAR (3–79 keV) where these objects show a hard spectrum that enables us to constrain the inverse Compton (IC) peak and the jet power. We found that all three targets resemble the most powerful blazars, with the synchrotron peak located in the submillimeter range and the IC peak in the MeV range, and therefore belong to the MeV blazar class. Using a simple one-zone leptonic emission model to reproduce the spectral energy distributions, we conclude that a simple combination of synchrotron and accretion disk emission reproduces the infrared–optical spectra, while the X-ray to γ -ray part is well reproduced by the IC scattering of low-energy photons supplied by the broad-line region. The black hole masses for each of the three sources are calculated to be ≳4 × 10{sup 8} M {sub ☉}. The three studied sources have jet power at the level of, or beyond, the accretion luminosity.},
doi = {10.3847/1538-4357/AA6A17},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 839,
place = {United States},
year = {2017},
month = {4}
}

Works referencing / citing this record:

Broad-band spectral study of X-ray transient MAXI J1820+070 using Swift/XRT and NuSTAR
journal, June 2019

  • Bharali, Priya; Chauhan, Jaiverdhan; Boruah, Kalyanee
  • Monthly Notices of the Royal Astronomical Society, Vol. 487, Issue 4
  • DOI: 10.1093/mnras/stz1686