Radio Monitoring of Nova Sco 2012
ATel #4288; Laura Chomiuk (Michigan State/NRAO), Jennifer Weston (Columbia), Jennifer Sokoloski (Columbia), Thomas Nelson (Minnesota), Michael Rupen (NRAO), Koji. Mukai (UMBC/GSFC), Nirupam Roy (NRAO), and Amy Mioduszewski (NRAO)
on 30 Jul 2012; 19:14 UT
Credential Certification: Laura Chomiuk (lchomiuk@cfa.harvard.edu)
As part of the E-Nova Project, we are obtaining radio continuum observations of Nova Sco 2012 (CBET #3136, ATEL #4157)
with the Karl G. Jansky Very Large Array (VLA). Our first observation took place on 2012 June 26.3, when we detected Nova Sco 2012 with flux densities of 232 +/- 32 microJy at 5.0 GHz and 140 +/- 23 microJy at 6.75 GHz. On 2012 June 28.1, we did not detect the nova at 33 GHz, with a 3 sigma upper limit on its flux density of < 504 microJy.
Nova Sco 2012 may be associated with a Fermi gamma ray source (ATel #4284), and these radio observations took place during the period in which Fermi detected gamma rays from this region of the sky. The radio spectral index (α = -1.7 ± 0.7, defined as Sν ∝ να) is consistent with optically-thin synchrotron emission, and not wholly inconsistent with optically-thin thermal emission. The E-Nova Project will continue monitoring this source with the VLA.
E-Nova Project Website
