Abstract Details
| Name: Rupak Roy Affiliation: The Oskar Klein Centre, Department of Astronomy, Stockholm University, AlbaNova, 10691 Stockholm, Sweden Conference ID: ASI2016_880 Title : Luminous Supernovae : Implication of shock interaction on the observed properties Authors and Co-Authors : N/A Abstract Type : Oral Abstract Category : Extragalactic astronomy Abstract : This is now established that the life of every massive star ends through a violent explosion, know as Core-Collapse Supernova (CCSN). In last couple of decades both theories and observational skills had been developed to understand the diversities of the CCSNe along with their origins and after-effects. In the most common scenario the core of such a star collapses under self-gravity and forms a compact object, while the outer shells are thrown away in the form of a cosmic catastrophic event. After the year 2005, dedicated surveys like CRTS, LOSS, ROTSE, PTF, PanSTARRS have discovered several events which have an average absolute Visual-band peak magnitude of about -21 mag, more than 2 mag brighter than CCSNe. These are Superluminous SNe (SLSNe). It seems that SLSNe are neither occurring in the nearby universe, nor are they hosted in massive-galaxies like our Milky Way. The mechanism for SLSNe is still not well understood. The circumstellar interaction or emergence of a magnetar after core-collapse or disruption of a massive star through pair production are the proposed scenarios. It is also not clear whether by origin the progenitors of CCSNe and SLSNe are same or are they different. Recent research revealed that there are few events which come in between these two classes. These gap-transients are important to constrain the nature of the progenitors of these two different populations as well as their environments and explosion mechanisms. In this contribution, we will discuss about the impact of circumstellar interaction on the observed properties of luminous supernovae. We will also discuss about the probability to detect such objects at early phases from the ground and space-based observatories and the importance of such study to understand the massive stars in the near and far universe. |