Amy Lien
NASA Goddard Space Flight Center
University of Maryland, Baltimore County
Code 661, Swift/BAT team
Office: Building 34, S225
Email: amy.y.lien at nasa.gov

My graduate study with Prof. Brian Fields focuses on detailed forecasting of core-collapse supernova detections.



Forecasts of Core-Collapse Supernova detections for Future Surveys
My graduate study with Prof. Brian Fields focuses on detailed forecasting of core-collapse supernova detections for major future surveys in both optical and radio wavelengths (e.g. LSST, DES, SKA). In addition, we explore science potentials of these potential detections, such as precision measurement of the cosmic supernova rate and the diffuse supernova neutrino background, and probing failed supernovae via multi-messenger observations.
The Diffuse Gamma-Ray Background from Type Ia Supernovae
The origin of the diffuse extragalactic gamma-ray background (EGB) has been intensively studied but remains unsettled. Current popular source candidates include unresolved star-forming galaxies, starburst galaxies, and blazars. We calculate the EGB contribution from the interactions of cosmic rays accelerated by Type Ia supernovae (SNe), extending earlier work that only included core-collapse SNe. Our updated EGB estimate continues to show that star-forming galaxies can represent a substantial portion of the signal measured by Fermi. In the case of quiescent galaxies, conversely, we find a wide range of possibilities for the EGB contribution.