SN 2015bq: A Luminous Type Ia Supernova with Early Flux Excess

  title={SN 2015bq: A Luminous Type Ia Supernova with Early Flux Excess},
  author={Liping Li and Jujia Zhang and Benzhong Dai and Wenxiong Li and Xiaofeng Wang and Qian Zhai and Jinming Bai},
  journal={The Astrophysical Journal},
  • Liping Li, Jujia Zhang, +4 authors Jinming Bai
  • Published 17 October 2021
  • Physics
  • The Astrophysical Journal
We present optical and ultraviolet (UV) observations of a luminous type Ia supernova (SN Ia) SN 2015bq characterized by early flux excess. This SN reaches a B-band absolute magnitude at M B = −19.68 ± 0.41 mag and a peak bolometric luminosity at L = (1.75 ± 0.37) × 1043 erg s−1, with a relatively small post-maximum decline rate [Δm 15(B) = 0.82 ± 0.05 mag]. The flux excess observed in the light curves of SN 2015bq a few days after the explosion, especially seen in the UV bands, might be due to… 


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