Expanded VLA observations of Type IIn supernova SN 2010al
ATel #2532; Poonam Chandra (RMC, Canada), Alicia Soderberg (CfA, Harvard), Roger Chevalier (UVA, Charlottesville), Claes Fransson (Stockholm observatory) and Nikolai Chugai (INASAN, Russia)
on 2 Apr 2010; 22:28 UT
Credential Certification: Poonam Chandra (poonam.chandra@rmc.ca)
Subjects: Radio, Nova, Supernovae
We observed the Type IIN supernova SN 2010al (Rich et al, CBET #2207), which has shown
its early spectrum similar to SN 1998S (Cooke et al. ATel #2491) with the Expanded
VLA (EVLA; Perley et al. 2009, IEEEP, 97, 1448) in D configuration beginning at
Mar 26.25 UT for a duration of 1.0 hr. The observations were carried out at a
central frequency of 8.396 GHz with a total bandwidth of 256 MHz. The map rms
was 17 uJy. The supernova lies in the radio bright star forming (SF) region of
host galaxy UGC 4286 and hence difficult to separate out the flux. However,
mapping only with long baselines (>10 klambda), we attempt to get rid of
extended SF region and have a tentative detection of 2-sigma flux of 100 uJy
at the SN position. We are grateful to the EVLA commissioning staff for making
this target-of-opportunity observation possible.
