Spectropolarimetry of Core-Collapse Supernovae
| dc.creator | Leonard, Douglas C. | |
| dc.creator | Filippenko, Alexei V. | |
| dc.date | 2004-09-21 | |
| dc.date.accessioned | 2026-07-07T02:14:42Z | |
| dc.date.available | 2026-07-07T02:14:42Z | |
| dc.description | We briefly review the young field of spectropolarimetry of core-collapse supernovae (SNe). Spectropolarimetry provides the only direct known probe of early-time supernova (SN) geometry. The fundamental result is that asphericity is a ubiquitous feature of young core-collapse SNe. However, the nature and degree of the asphericity vary considerably. The best predictor of core-collapse SN polarization seems to be the mass of the hydrogen envelope that is intact at the time of the explosion: those SNe that arise from progenitors with large, intact envelopes (e.g., Type II-plateau) have very low polarization, while those that result from progenitors that have lost part (SN IIb, SN IIn) or all (SN Ib) of their hydrogen (or even helium; SN Ic) layers prior to the explosion tend to show substantial polarization. Thus, the deeper we probe into core-collapse events, the greater the asphericity seems to be, suggesting a fundamentally asymmetric explosion with the asymmetry damped by the addition of envelope material. | |
| dc.description | Invited review at Supernovae as Cosmological Lighthouses, 16-19 June, Padua, IT. 6 pages | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0409518 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0409518 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/8217 | |
| dc.subject | Astrophysics | |
| dc.title | Spectropolarimetry of Core-Collapse Supernovae | |
| dc.type | text |