Spectropolarimetry of Supernovae
نویسندگان
چکیده
منابع مشابه
Spectropolarimetry of Supernovae
Overwhelming evidence has accumulated in recent years that supernova explosions are intrinsically 3-dimensional phenomena with significant departures from spherical symmetry. We review the evidence derived from spectropolarimetry that has established several key results: virtually all supernovae are significantly aspherical near maxim light; core-collapse supernovae behave differently than ther...
متن کاملSpectropolarimetry of Core-Collapse Supernovae
We briefly review the young field of spectropolarimetry of corecollapse 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 polarizat...
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We present results from a spectropolarimetric survey of young supernovae completed at the Keck Observatory, including at least one example from each of the major supernova types: Ia (1997dt), Ib (1998T, 1997dq), Ib/c-pec (1997ef), IIn (1997eg), and II-P (1997ds). All objects show evidence for intrinsic polarization, suggesting that asphericity may be a common feature in young supernova atmosphe...
متن کاملSpectropolarimetry of cool stars
In recent years, the development of spectropolarimetric techniques deeply modified our knowledge of stellar magnetism. In the case of solar-type stars, the challenge is to measure a geometrically complex field and determine its evolution over very different time frames. In this article, I summarize some important observational results obtained in this field over the last two decades and detail ...
متن کاملSpectropolarimetry of the Circinus galaxy
High quality 4500–6800 Å spectropolarimetric observations of the Circinus galaxy are reported. These show polarized and relatively broad (FWHM∼3300 km/s) Hα (as well as marginal Hβ) arising from a <3′′ (<60 pc) region centered on the nucleus and coincident with the the peak of the narrow line region. Broad Hα might also be present ∼8′′ (160 pc) SE from the nucleus and close to the dust lane, bu...
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ژورنال
عنوان ژورنال: Annual Review of Astronomy and Astrophysics
سال: 2008
ISSN: 0066-4146,1545-4282
DOI: 10.1146/annurev.astro.46.060407.145139