The Peculiar Evolution of V1535 Sco
Abstract
Multi-wavelength observations of the nova V1535 Sco revealed unusual behavior throughout its evolution in 2015. During the first 18 days of the outburst, radio observations were consistent with optically thin synchrotron emission and X-ray observations indicated the presence of relatively hard (kT>1.0 keV) photons. These are both evidence for the existence of strong shocks in the nova ejecta during its early evolution, most likely the result of the nova ejecta slamming into a stellar wind from the companion star. On day 7, a VLBA observation shows a compact component contributing approximately 73% of the emission at 5GHz on that day. From day 23 and to day 42, the radio spectral energy distribution was more consistent with optically thick thermal bremsstrahlung emission. Starting on day 54, the radio observations again show evidence of synchrotron emission, possibly the result of the slower-moving ejecta creating radiative shocks upon encountering material from a previous outburst.
- Publication:
-
American Astronomical Society Meeting Abstracts #229
- Pub Date:
- January 2017
- Bibcode:
- 2017AAS...22921507L