2018A&A...616A..65P


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.14CET22:10:49

2018A&A...616A..65P - Astronomy and Astrophysics, volume 616A, 65-65 (2018/8-1)

The mid-2016 flaring activity of the flat spectrum radio quasar PKS 2023-07.

PIANO G., MUNAR-ADROVER P., PACCIANI L., ROMANO P., VERCELLONE S., DONNARUMMA I., VERRECCHIA F., CARRASCO L., PORRAS A., RECILLAS E. and TAVANI M.

Abstract (from CDS):


Context. Flat spectrum radio quasars (FSRQs) can suffer strong absorption above E=25/(1+z)GeV, due to gamma-gamma interaction if the emitting region is at sub-parsec scale from the super-massive black hole (SMBH).
Aims. Gamma-ray flares from these astrophysical sources can be used to investigate the location of the high-energy emission region and the physics of the radiating processes.
Methods. We present an episode of remarkable gamma-ray flaring activity from FSRQ PKS 2023-07 during April 2016, as detected by both the AGILE and Fermi satellites. An intensive multiwavelength campaign, triggered by Swift, covered the entire duration of the flaring activity, including the peak gamma-ray activity.
Results. We report the results of multiwavelength observations of the blazar. We found that during the peak emission, the most energetic photon had an energy of 44 GeV, putting strong constraints on the opacity of the gamma-ray dissipation region. The overall spectral energy distribution (SED) is interpreted in terms of leptonic models for blazar jets, with the emission site located beyond the broad line region (BLR).

Abstract Copyright: © ESO 2018

Journal keyword(s): galaxies: active - quasars: general - quasars: supermassive black holes

Simbad objects: 3

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Number of rows : 3

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 QSO B2022-077 BLL 20 25 40.6599681095 -07 35 52.689195990   18.5       ~ 160 3
2 QSO B2155-304 BLL 21 58 52.0651817803 -30 13 32.120657891   13.36 13.09 12.62   ~ 1522 1
3 NAME BL Lac BLL 22 02 43.2913773726 +42 16 39.978417860   15.66 14.72     ~ 1977 1

    Equat.    Gal    SGal    Ecl

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2019.12.14-22:10:49

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