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

Journal
Date Issued
2018
Author(s)
•
Munar-Adrover, P.
•
•
•
•
Donnarumma, I.
•
•
Carrasco, L.
•
Porras, A.
•
Recillas, E.
•
DOI
Abstract
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).
Volume
616
Start page
A65
Uri
Url
Issn Identifier
0004-6361
Ads BibCode
2018A&A...616A..65P
Rights
open.access
File(s)
Loading...
Thumbnail Image
Name

Piano_2018_A&A_616_A65.pdf

Description
Pdf editoriale
Size

490.79 KB

Format

Adobe PDF

Checksum (MD5)

543f39329100baaad895a83c93c4f5f0