UPDATED RADIO Σ − D RELATION FOR GALACTIC SUPERNOVA REMNANTS – II

Serbian Astronomical Journal

article

B. Vukoti´c¹  A. Ciprijanovi´c²  M. M. Vuˇceti´c²  D. Oni´c²  D. Uroˇsevi´c² 

[1] Astronomical Observatory;Department of Astronomy, Faculty of Mathematics, University of Belgrade Studentski;Mathematical Institute of the Serbian Academy of Sciences and Arts Kneza Mihaila

关键词: Methods: data analysis;    Methods: statistical;    Astronomical data bases: miscellaneous;    ISM: supernova remnants;    Radio continuum: ISM;   

DOI  :  10.2298/SAJ1999023V

来源: Astronomical Observatory, Department of Astronomy, Belgrade

【 摘 要 】

In this paper we present the updated empirical radio surfacebrightness-to-diameter (Σ–D) relation for Galactic supernova remnants (SNRs) calibrated using 110 SNRs with reliable distances. We apply orthogonal fitting procedure and kernel density smoothing in the Σ − D plane and compare the results with the latest theoretical Σ − D relations derived from simulations of radio evolution of SNRs. We argue that the best agreement between the empirical and simulated Σ − D relations is achieved if the mixed-morphology SNRs and SNRs of both, low brightness and small diameter, are filtered out from the calibration sample. The distances to 5 newly discovered remnants and 27 new candidates for shell SNRs are estimated from our full and filtered calibration samples.

【 授权许可】

CC BY-NC-ND