Dear all,
I hope you will join us for the July LINCC Tech Talk session that will take place on Thursday, July 9, at 10am Pacific/1pm Eastern on Zoom (https://ls.st/lincc-talks). We will hear about GoPreaux by Craig Pellegrino.
GOPREAUX: Spectrophotometric Templates of Extragalactic Transients Using Gaussian Process Regression
Over the coming decade, time-domain surveys such as the Vera C. Rubin Observatory’s Legacy Survey of Space and Time will discover millions of extragalactic transient candidates. Photometrically classifying these transients will be necessary; however, most current classification efforts are ill-equipped to handle the large volume of transients discovered at high redshifts, where the rest-frame ultraviolet emission is redshifted into the observer-frame optical and infrared. To address this shortcoming, we have created new spectrophotometric templates of different classes of extragalactic transients, with a particular focus on core-collapse supernovae. These templates leverage two decades of transient observations with the Neil Gehrels Swift Observatory, along with publicly-available survey data, to model transient emission from the ultraviolet to the infrared across a range of phases using Gaussian Process Regression. This enables a forecasted light curve or spectrum at arbitrary wavelength or phase. In this talk I will describe the process of generating these templates as well as our open-source codebase named GOPREAUX. I will also demonstrate how these templates can be used to train photometric classification algorithms, and how our template predictions compare to other synthetic datasets and regression models in the literature. Finally, I will conclude by describing a number of physical inferences made possible with these template models.
LINCC Tech Talks are held on the second Thursday of every month. Events are also advertised at our web page and also provided in calendar form; and the #lincc-tech-talks LSST-DA Slack channel is always available for discussions before, during, and after the talks.