A NuSTAR view of powerful gamma-ray loud blazars. (arXiv:1906.02955v1 [astro-ph.HE])

A NuSTAR view of powerful gamma-ray loud blazars. (arXiv:1906.02955v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Ghisellini_G/0/1/0/all/0/1">G. Ghisellini</a> (1), <a href="http://arxiv.org/find/astro-ph/1/au:+Perri_M/0/1/0/all/0/1">M. L. Perri</a> (2,3) <a href="http://arxiv.org/find/astro-ph/1/au:+Costamante_G/0/1/0/all/0/1">G. Costamante</a> (2), <a href="http://arxiv.org/find/astro-ph/1/au:+Tagliaferri_G/0/1/0/all/0/1">G. Tagliaferri</a> (1), <a href="http://arxiv.org/find/astro-ph/1/au:+Sbarrato_T/0/1/0/all/0/1">T. Sbarrato</a> (4), <a href="http://arxiv.org/find/astro-ph/1/au:+Campitiello_S/0/1/0/all/0/1">S. Campitiello</a> (5), <a href="http://arxiv.org/find/astro-ph/1/au:+Madejski_G/0/1/0/all/0/1">G. Madejski</a> (6), <a href="http://arxiv.org/find/astro-ph/1/au:+Tavecchio_F/0/1/0/all/0/1">F. Tavecchio</a> (1), <a href="http://arxiv.org/find/astro-ph/1/au:+Ghirlanda_G/0/1/0/all/0/1">G. Ghirlanda</a> (1), ((1) INAF- Oss. Brera, (2) SSDC, ASI, (3) INAF Oss. Roma, (4) Univ Milano-Bicocca, (5) SISSA, (6) Kavli Inst. SLAC)

We observed with the NuSTAR satellite 3 blazars at z>2, detected in
gamma-rays by Fermi/LAT and in the soft X-rays, but not yet observed above 10
keV. The flux and slope of their X-ray continuum, together with Fermi/LAT data
allows us to estimate their total electromagnetic output and peak frequency.
For some of them we can study the source in different states, and investigate
the main cause of the observed different spectral energy distribution. We then
collected all blazars at redshift greater than 2 observed by NuSTAR, and
confirm that these hard and luminous X-ray blazars are among the most powerful
persistent sources in the Universe. We confirm the relation between the jet
power and the disk luminosity, extending it at the high energy end.

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