O'Sullivan, Créidhe and Green, D. A. (1999) Constraints on the secular decrease in the flux density of Cas A at 13.5, 15.5 and 16.5 GHz. Monthly Notices of the Royal Astronomical Society, 303. pp. 575-578. ISSN 0035-8711

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Abstract

Observations of the flux density ratio of Cas A to Cyg A at 13.5, 15.5 and 16.5 GHz made in 1994 and 1995 with the Cosmic Anisotropy Telescope are presented. These observations are compared with the predictions of Baars et al. and lower frequency observations, in order to understand better the frequency dependence of the secular decrease in the flux density of Cas A. When compared with measurements at other frequencies, these observations imply that there is a frequency dependence to the secular decrease in the flux density of Cas A, but that it is not as strongly frequency dependent as was thought by Baars et al. when they constructed their absolute flux density spectrum of Cas A.

Item Type:	Article
Keywords:	ISM; individual; Cas A; radio continuum; general;
Academic Unit:	Faculty of Science and Engineering > Experimental Physics
Item ID:	18852
Depositing User:	Dr. Créidhe O'Sullivan
Date Deposited:	10 Sep 2024 14:54
Journal or Publication Title:	Monthly Notices of the Royal Astronomical Society
Publisher:	Wiley Blackwell
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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