Abstract Details
| Name: Rupak Roy Affiliation: IUCAA, Pune Conference ID: ASI2019_288 Title : Bumps in the lightcurves of Superluminous Supernovae Authors and Co-Authors : Rupak Roy Abstract Type : Poster Abstract Category : Extragalactic Astronomy Abstract : Development on supernova research in last decade has confirmed that there is a distinct class of events which are more luminous (-21 mag) with broader peak than canonical core-collapse supernovae (CCSNe). These are superluminous supernovae (SLSNe). The powering mechanism of SLSNe is yet not resolved. Interaction of SN-shock with circumstellar medium (CSM), the presence of a spin-down Magnetar or pair-instability (PISNe) are the proposed theories. Recently we have also found SNe with peak luminosity in between CCSNe and SLSNe. Often, these intermediate luminous transients and SLSNe show bumps in their lightcurves before and after the principal-peak. Origins of these bumps are not well-known and may not be similar. Early bump is probably related to the activity of the central-engine which is most likely a Magnetar, while post-maximum bump is probably related to the shock-CSM interaction. Here, I will discuss the origins of different bumps and their importance in the understanding of the mechanisms of SLSNe. For this work, I have used the optical lightcurve data of all known SLSNe from the literature for which we have both early and late observations. I have also used the archival data for UV and X-ray observations. Here, I will also discuss the correlations between bumpy-lightcurves and spectral features of super and intermediate luminous supernovae. |