SN 2022joj: A Potential Double Detonation with a Thin Helium shell

E. Padilla Gonzalez, D. A. Howell, G. Terreran +34

We present photometric and spectroscopic data for SN 2022joj, a nearby peculiar Type Ia supernova (SN Ia) with a fast decline rate ($\mathrm{\Delta }{\mathrm{m}}_{15,\mathrm{B}}=1.4$ mag). SN 2022joj shows exce…