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Millimetre observations of X-Ray Bl-Lacertae

Gear, Walter Kieran ORCID: 1993. Millimetre observations of X-Ray Bl-Lacertae. Monthly Notices of the Royal Astronomical Society 264 (4) , L21.

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I present the first 1.3-mm observations of a complete sample of 10 X-ray- selected BL Lacertae objects (XBLs), together with complementary measurements of a complete sample of nine radio-selected BL Lacs (RBLs). Three XBLs have firm detections and one has a marginally significant detection. None of the XBLs has a radio spectrum rising steeply into the millimetre region, and the radio-millimetre spectral indices of the XBLs detected are within the range found for the RBLs. However, the overall millimetre-X-ray spectra of the XBLs are much flatter than for any RBL.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: Wiley-Blackwell
ISSN: 0035-8711
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Last Modified: 21 Oct 2022 09:21

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