Multifrequency observations of the blazar PKS 0537-441 in a moderately active state

PKS 0537-441 was observed during an active state in February 1985 at infrared, optical, UV, and X-ray frequencies. Comparison with earlier measurements indicates that the source brightened by a factor of approximately 2 in all bands. This suggests that the same spatial region may be responsible for...

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Veröffentlicht in:	Astrophys. J.; (United States) 1986-12, Vol.311 (1), p.L13-L16
Hauptverfasser:	TANZI, E. G, BARR, P, BOUCHET, P, CHIAPPETTI, L, CRISTIANI, S, FALOMO, R, GIOMMI, P, MARASCHI, L, TREVES, A
Format:	Artikel
Sprache:	eng
Schlagworte:	640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources Astronomy BL LACERTAE OBJECTS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COMPARATIVE EVALUATIONS COSMIC RADIO SOURCES Earth, ocean, space Exact sciences and technology INFRARED SPECTRA Radio sources SPECTRA SPECTROPHOTOMETRY Stellar systems. Galactic and extragalactic objects and systems. The universe ULTRAVIOLET SPECTRA Unidentified sources and radiation outside the solar system VISIBLE SPECTRA X-RAY SPECTRA
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Zusammenfassung:	PKS 0537-441 was observed during an active state in February 1985 at infrared, optical, UV, and X-ray frequencies. Comparison with earlier measurements indicates that the source brightened by a factor of approximately 2 in all bands. This suggests that the same spatial region may be responsible for the emission in the whole spectral range observed. 19 references.
ISSN:	0004-637X 1538-4357
DOI:	10.1086/184789