Accession Number:

AD1096511

Title:

The Large Gamma-Ray Flare of the Flat-Spectrum Radio Quasar PKS0346-27

Descriptive Note:

Journal Article - Open Access

Corporate Author:

Naval Research Laboratory Washington

Personal Author(s):

• Angioni, R.
• Nesci,R.
• Finke,J. D.
• Buson,S.
• Ciprini,S.

Report Date:

2019-03-01

Pagination or Media Count:

11.0

Abstract:

Aims. In this paper, we characterize the first gamma-ray flaring episode of the flat-spectrum radio quasar PKS 0346-27 z 0.991, as revealed by Fermi-LAT monitoring data, and the concurrent multi-wavelength variability observed from radio through X-rays. Methods. We studied the long- and short-term flux and spectral variability from PKS 0346-27 by producing gamma-ray light curves with different time binning. We complement the Fermi-LAT data with multi-wavelength observations from the Atacama Large Millimeter Array radio mm-band, the Rapid Eye Mount telescope near-infrared and Swift optical-UV and X-rays. This quasi-simultaneous multi-wavelength coverage allowed us to construct time-resolved spectral energy distributions SEDs of PKS 0346-27 and compare the broadband spectral properties of the source between different activity states using a one-zone leptonic emission model.

Descriptors:

• spectral energy distribution
• black holes
• space sciences
• telescopes
• magnetic fields
• gamma rays
• x rays
• observatories
• galaxies
• quasars

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE