THE SPUR-LIKE RADIO FEATURE IN CENTAURUS

TL;DRAbstract

Abstract. We present a study of the radio emission of the Cen-taurus region at galactic latitudes 2 ◦ ≤ b ≤ 18 ◦ , using pre-existing 408MHz continuum data and results of new 1.42GHzcontinuum and neutral hydrogen line observations. It is shownthat the extensive spur-like radio feature visible in this regionhasanon-thermalnatureandisactuallyformedbyseveralprevi-ously unidentified individual sources. Five new supernova rem-nant (SNR) candidates have been detected at relatively highlatitudes. Three of them, as well as two former candidates re-ported by Duncan et al. (1995), were confirmed through thecomputation of their spectral indices. One of the new SNRs,G315.4+12.9, might be associated with the open cluster NGC5460.Key words: radio continuum: ISM – ISM: structure – ISM:supernova remnants1. IntroductionEarly low frequency observations of the Centaurus region re-vealed the existence of an extended radio feature towards thesouth-east of the Centaurus A (Cen A) radio galaxy (Pidding-ton & T

Chat with Paper

AI Agents for this Paper