Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Long-term Behavior of a Type IIP Supernova SN 2004dj in the Radio Bands
Stockholm University, Faculty of Science, Department of Astronomy. Tata Institute of Fundamental Research, India.
Number of Authors: 32018 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 863, no 2, article id 163Article in journal (Refereed) Published
Abstract [en]

We present radio observations and modeling of one of the nearest and brightest Type IIP supernova SN 2004dj exploded in the galaxy NGC 2403 at a distance of similar to 3.5 Mpc. Our observations span a wide frequency and temporal range of 0.24-43 GHz and similar to 1 day to 12 years since the discovery. We model the radio light curves and spectra with the synchrotron emission. We estimate the mass-loss rate of the progenitor star to be (M)over dot similar to 1 x 10(-6) M-circle dot yr(-1) for a wind speed of 10 km s(-1). We calculate the radio spectral indices using 1.06, 1.40, 5.00, and 8.46 GHz flux density measurements at multiple epochs. We witness steepening in the spectral index values for an extended period predominantly at higher frequencies. We explain this as a signature of electron cooling happening at the supernova shock in the plateau phase of the supernova. We estimate the cooling timescales for inverse Compton cooling and synchrotron cooling and find that inverse Compton cooling is the dominant cooling process.

Place, publisher, year, edition, pages
2018. Vol. 863, no 2, article id 163
Keywords [en]
circumstellar matter, radiation mechanisms: non-thermal, radio continuum: general, supernovae: general, supernovae: individual (SN 2004dj)
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:su:diva-160089DOI: 10.3847/1538-4357/aad17aISI: 000442222700025OAI: oai:DiVA.org:su-160089DiVA, id: diva2:1251100
Available from: 2018-09-26 Created: 2018-09-26 Last updated: 2018-09-26Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Search in DiVA

By author/editor
Chandra, Poonam
By organisation
Department of Astronomy
In the same journal
Astrophysical Journal
Astronomy, Astrophysics and Cosmology

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 8 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf