4.6 Article

VLBI observations of SN2011dh: imaging of the youngest radio supernova

期刊

ASTRONOMY & ASTROPHYSICS
卷 535, 期 -, 页码 -

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EDP SCIENCES S A
DOI: 10.1051/0004-6361/201118195

关键词

ISM: supernova remnants; radio continuum: general; supernovae: general; supernovae: individual: SN2011dh; radiation mechanisms: non-thermal

资金

  1. MICINN [AYA2009-13036-C02-01, AYA2009-13036-C02-02]
  2. Generalitat Valenciana [PROMETEO 104/2009]
  3. COST action [MP0905]

向作者/读者索取更多资源

We report on the VLBI detection of supernova SN2011dh at 22GHz using a subset of the EVN array. The observations took place 14 days after the discovery of the supernova, thus resulting in a VLBI image of the youngest radio-loud supernova ever. We provide revised coordinates for the supernova with milli-arcsecond precision, linked to the ICRF. The recovered flux density is a factor similar to 2 below the EVLA flux density reported by other authors at the same frequency and epoch of our observations. This discrepancy could be due to extended emission detected with the EVLA or to calibration problems in the VLBI and/or EVLA observations.

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