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    Constraints on the secular decrease in the flux density of Cas A at 13.5, 15.5 and 16.5 GHz


    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:
    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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