Confined dense circumstellar material surrounding a regular type II supernova

@article{Yaron2017ConfinedDC,
  title={Confined dense circumstellar material surrounding a regular type II supernova},
  author={Ofer Yaron and Daniel A. Perley and Avishay Gal-yam and Jose H. Groh and Assaf Horesh and Eran. O. Ofek and Shrinivas R. Kulkarni and Jesper Sollerman and Claes Fransson and Adam Rubin and P{\'a}l Szab{\'o} and N. Sapir and Francesco Taddia and S. Bradley Cenko and Stefano Valenti and Iair Arcavi and D. Andrew Howell and Mansi M. Kasliwal and Paul M. Vreeswijk and Danny Khazov and Ori D. Fox and Y. Cao and Orly Gnat and Patrick L. Kelly and Peter E. Nugent and Alexei V. Filippenko and Russ R. Laher and Przemek R. Wozniak and W. H. Lee and Umaa D. Rebbapragada and Kate Maguire and M. Sullivan and Maayane T. Soumagnac},
  journal={Nature Physics},
  year={2017},
  volume={13},
  pages={510-517}
}
With the advent of new wide-field, high-cadence optical transient surveys, our understanding of the diversity of core-collapse supernovae has grown tremendously in the last decade. However, the pre-supernova evolution of massive stars, which sets the physical backdrop to these violent events, is theoretically not well understood and difficult to probe observationally. Here we report the discovery of the supernova iPTF 13dqy = SN 2013fs  a mere ~3 h after explosion. Our rapid follow-up… 

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Observational surveys are now able to detect an increasing number of transients, such as core-collapse supernovae (SN) and powerful non-terminal outbursts (SN impostors). Dedicated spectroscopic

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Measuring the Progenitor Masses and Dense Circumstellar Material of Type II Supernovae

Recent modeling of hydrogen-rich Type II supernova (SN II) light curves suggests the presence of dense circumstellar material (CSM) surrounding the exploding progenitor stars. This has important

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We present the results of Atacama Large Millimeter/submillimeter Array (ALMA) band 3 observations of the nearby type Ic supernova (SN) 2020oi. Under the standard assumptions on the SN-circumstellar

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Type II supernovae (SNe II) originate from the explosion of hydrogen-rich supergiant massive stars. Their first electromagnetic signature is the shock breakout (SBO), a short-lived phenomenon that

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Recent high-cadence transient surveys and rapid follow-up observations indicate that some massive stars may dynamically lose their own mass within decades before supernovae (SNe). Such a mass-loss

The surface abundances of red supergiants at core collapse

In the first weeks-to-months of a Type II-P supernova (SN), the spectrum formation region is within the hydrogen-rich envelope of the exploding star. Optical spectra taken within a few days of the SN

Constraining Massive Star Activities in the Final Years through Properties of Supernovae and Their Progenitors

  • R. OuchiK. Maeda
  • Physics
    Proceedings of the 15th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG15)
  • 2019
Recent observations of supernovae (SNe) just after the explosion suggest that a good fraction of SNe have the confined circumstellar material (CSM) in the vicinity, and the pre-SN enhanced mass loss

Explosion of red-supergiant stars: Influence of the atmospheric structure on shock breakout and early-time supernova radiation

Early-time observations of Type II supernovae (SNe) 2013cu and 2013fs have revealed an interaction of ejecta with material near the star surface. Unlike Type IIn SN 2010jl, which interacts with a

A surge of light at the birth of a supernova

The serendipitous discovery of a newly born, normal type IIb supernova (SN 2016gkg), which reveals a rapid brightening at optical wavelengths of about 40 magnitudes per day, suggests that it is appropriate to decouple the treatment of the shock propagation from the unknown mechanism that triggers the explosion.
...

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