Mapping Circumstellar Matter with Polarized Light: The Case of Supernova 2014J in M82

@article{Yang2018MappingCM,
  title={Mapping Circumstellar Matter with Polarized Light: The Case of Supernova 2014J in M82},
  author={Yi-Xian 义先 Yang 杨 and Lifan Wang and Dietrich Baade and Peter. J. Brown and Aleksandar Cikota and Misty Cracraft and Peter A. H{\"o}flich and Justyn R. Maund and Ferdinando Patat and William B. Sparks and Jason Spyromilio and Heloise F. Stevance and Xiaofeng Wang and J. Craig Wheeler},
  journal={The Astrophysical Journal},
  year={2018},
  volume={854}
}
Optical polarimetry is an effective way of probing the environment of a supernova for dust. We acquired linear HST ACS/WFC polarimetry in bands , , and of the supernova (SN) 2014J in M82 at six epochs from ∼277 days to ∼1181 days after the B-band maximum. The polarization measured at day 277 shows conspicuous deviations from other epochs. These differences can be attributed to at least ∼ of circumstellar dust located at a distance of from the SN. The scattering dust grains revealed by these… 

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