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A Multiwavelength Study of the Extreme AGN J2310-437

Authors :
Worrall, D. M
Birkenshaw, M
Remillard, R. A
Prestwich, A
Tucker, W. H
Tananbaum, H
Source :
Astrophysical Journal. 516
Publication Year :
1999
Publisher :
United States: NASA Center for Aerospace Information (CASI), 1999.

Abstract

We present new X-ray, radio, and optical data for the unusual galaxy/cluster system J2310-437. Our results confirm the presence of an active nucleus and suggest an interpretation as an anomalous BL Lac object of bulk relativistic Doppler factor <2, with an optically deficient radio to X-ray spectrum. The radio, optical, and soft X-ray flux densities could lie along a single power-law function, lacking the curvature typical of BL Lac objects. Compared with other known sources that may have comparable multi-frequency spectra, J2310-437 is the most extreme. Its low isotropic optical/Ultraviolet (UV) radiation is consistent with the intensity of external photons governing the electron spectral break through Compton cooling; in this source the external photon density would be too low to produce a spectral break below the X-ray.

Subjects

Subjects :
Astronomy

Details

Language :
English
Volume :
516
Database :
NASA Technical Reports
Journal :
Astrophysical Journal
Notes :
NSF AST-93-15074, , NAG5-1882, , NAG5-3205
Publication Type :
Report
Accession number :
edsnas.19990115802
Document Type :
Report
Full Text :
https://doi.org/10.1086/307074