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Tracing star formation with radio emission
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.
2017 (English)In: Memorie della Societa Astronomica Italiana - Journal of the Italian Astronomical Society, Societa Astronomica Italiana , 2017, no 4, p. 749-750Conference paper, Published paper (Refereed)
Abstract [en]

Synchrotron emission from cosmic rays, produced in supernova remnants, contains information about a galaxy's star formation rate (SFR). For a quantitative estimate, we construct a model of non-thermal galactic radio flux, including the effect of free-free absorption. The latter can lead to a breakdown of the relation between the SFR and the radio flux at low frequencies and high gas densities. We employ our model to local disk and starburst galaxies and discuss the evolution of SFR-radio relations with redshift.

Place, publisher, year, edition, pages
Societa Astronomica Italiana , 2017. no 4, p. 749-750
Keywords [en]
Cosmology, Supernovae, Gas density, Quantitative estimates, Radio emission, Star formation rates, Star formations, Starburst galaxies, Supernova remnants, Synchrotron emission, Galaxies
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-227836Scopus ID: 2-s2.0-85045953890OAI: oai:DiVA.org:kth-227836DiVA, id: diva2:1206502
Conference
2017 Conference Francesco's Legacy: Star Formation in Space and Time, 5 June 2017 through 9 June 2017
Note

QC 20180517

Available from: 2018-05-17 Created: 2018-05-17 Last updated: 2018-05-17Bibliographically approved

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  • asciidoc
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