The HSC-SSP Transient Survey: Implications from Early Photometry and Rise Time of Normal Type Ia Supernovae

11 Mar 2020 Jiang Ji-an Yasuda Naoki Maeda Keiichi Doi Mamoru Shigeyama Toshikazu Tominaga Nozomu Tanaka Masaomi Moriya Takashi J. Takahashi Ichiro Suzuki Nao Morokuma Tomoki Nomoto Ken'ichi

With a booming number of Type Ia supernovae (SNe Ia) discovered within a few days of their explosions, a fraction of SNe Ia that show luminosity excess in the early phase (early-excess SNe Ia) have been confirmed. In this article, we report early-phase observations of seven photometrically normal SNe Ia (six early detections and one deep non-detection limit) at the COSMOS field through a half-year transient survey as a part of the Hyper Suprime-Cam Subaru Strategic Program (HSC SSP)... (read more)

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  • HIGH ENERGY ASTROPHYSICAL PHENOMENA
  • ASTROPHYSICS OF GALAXIES
  • SOLAR AND STELLAR ASTROPHYSICS