SIMBAD references

2019ApJ...879L...9L - Astrophys. J., 879, L9-L9 (2019/July-1)

Multi-wavelength variability properties of CGRaBS J0733+0456 identifying a distant gamma-ray blazar at z = 3.01.

LIAO N.-H., DOU L.-M., JIANG N., WANG Y.-B., FAN Y.-Z. and WANG T.-G.

Abstract (from CDS):

We report on Owens Valley Radio Observatory (OVRO), WISE, Swift and Fermi-LAT observations of the high redshift blazar CGRaBS J0733+0456, from which significant flux variations in radio and infrared (IR), as well as γ-ray domains, are detected. Particularly, the amplitude of long-term IR variation is over one order of magnitude, and the IR variability timescale can be constrained as short as a few hours in the source frame. The IR and γ-ray light curves are found to be rather similar, and the strong quasi-simultaneous IR and γ-ray flares are proven to be unique among the nearby γ-ray sources. This is the first time that a γ-ray blazar at redshift z >= 3 with multi-wavelength flux variations (flares) is identified. Broadband spectral energy distributions in different flux states are constructed and theoretically described. The γ-ray flares from some blazars as distant as redshift ∼5 are expected to be detectable for Fermi-LAT.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: active - galaxies: high-redshift - galaxies: jets - gamma rays: galaxies - quasars: individual: CGRaBS J0733+0456

Simbad objects: 8

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