Titre du document

Rapid Radio Variations in BL Lac

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Nom du Corpus

AstroConcepts

Auteur(s)
  • B. H. ANDREW 1
  • J. M. MACLEOD 1
  • J. L. LOCKE 1
  • W. J. MEDD 1
  • C. R. PURTON 2
Affiliation(s)
  • Radio and Electrical Engineering Division, National Research Council, Ottawa, Canada.
  • Centre for Research in Experimental Space Science, York University, Toronto, Canada.
Résumé

THE source VRO 42.22.01 (BL Lac) has interesting and unusual properties at both radio and optical wavelengths. The radio object was first discovered during a source survey at 610 MHz (ref. 1). It was studied in further detail at centimetre wavelengths by J. M. M. and B. H. A.2, who delineated the spectrum, and identified the source with an optical object. Schmitt3 noted that the optical object was catalogued as BL Lac and listed as a variable star. But the true nature of the object is uncertain. It is a rapid optical variable and its spectrum shows no emission or absorption lines (unpublished work of T. D. Kinman, E. Harlan and E. Marosan, and of D. DuPuy, J. L. Schmitt, R. McClure, S. van den Bergh and R. Racine). At optical frequencies there is about 10 per cent linear polarization4. Radio observations by Biraud and Veron5 indicated that the source was variable at a wavelength of 11 cm, and was circularly polarized.

Langue(s) du document
Indéterminé
Année de publication
1969
Revue

Nature

Éditeur
Nature
Type de publication
journal
Type de document
other
Présence de XML structuré
Oui
Version de PDF
1.4
Score de qualité du texte
3.953
Nom du concept
  • Beta Lacertae object
Catégories Science-Metrix
  • 1 - general ; 2 - general science & technology ; 3 - general science & technology
Catégories Inist
  • 1 - sciences appliquees, technologies et medecines ; 2 - sciences biologiques et medicales ; 3 - sciences biologiques fondamentales et appliquees. psychologie ; 4 - invertebres
Catégories Scopus
  • 1 - General ; 2 - Multidisciplinary ; 3 - Multidisciplinary
Catégories WoS
  • 1 - science ; 2 - multidisciplinary sciences
Identifiant ISTEX
4FAEF3EC0C211BDF1B48EF066408102C0CDFF4CE
ark:/67375/GT4-FH143ZST-G
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