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BEGIN:VEVENT
DTSTART:20201113T000000Z
DTEND:20201113T000000Z
DCREATED:20201020T164511Z
UID:ATEvent-1dfb1e4101934a3bac3bcf45ced0aa9f
SEQUENCE:0
LAST-MODIFIED:20201020T164516Z
SUMMARY:Virtual RAS meeting: Progress in Astrophysics with Type-Ia Supernovae
DESCRIPTION:Type Ia Supernovae (hereafter SNIa) play a crucial role in
  (Astro)physics since they can be used as standardised candles to meas
 ure large distances in the Universe. Their key contribution to distanc
 e measurement and cosmology was recognised with a Nobel Prize in Physi
 cs in 2011\, and more recently in 2019 they were fundamental in re-ope
 ning the debate around the expansion of the Universe. In addition\, SN
 Ia are fundamental contributors to the chemical evolution of our Galax
 y\, being responsible for about 2/3 of the total iron-peak elements co
 ntent\, about 1/3 of the so-called “alpha elements” (in particular
  Si\, S\, Ar\, Ca\, and Ti)\, and possibly to a significant portion of
  heavy trans-iron proton-rich isotopes called p-nuclei. Despite the im
 portance of SNIa\, we still do not know what stellar evolution path re
 presents their dominant progenitor channel\, being a matter of debate 
 between different kinds of accreting carbon-oxygen white dwarfs in bin
 ary systems (single-degenerate scenario) or white dwarfs merger events
  (double-degenerate scenario). Moreover\, as light-curves\, spectra an
 d nucleosynthesis products are deeply impacted by the nature of the st
 ellar system originating the explosion\, large uncertainties are thus 
 introduced when it comes to use SNIa in many Astrophysics fields\, in 
 particular cosmology and chemical evolution of the Galaxy. Several obs
 ervables can be used to shed light on SNIa progenitors. Specific chemi
 cal abundances in the Solar System\, like manganese\, are only produce
 d efficiently enough in near Chandrasekhar-mass (~1.39 solar masses) e
 xploding white dwarfs (naturally forming in the single-degenerate scen
 ario). Additionally\, the detection of ultraviolet radiation (efficien
 tly emitted by hot accreting white dwarfs in binary systems)\, chemica
 l analysis of meteorites and gamma-ray spectroscopy provide a rich var
 iety of astronomy to boost our understanding of SNIa progenitors. Inve
 stigation tools range from numerical models\, astronomical observation
 s\, and laboratory experiments to derive material compositions and nuc
 lear reaction rates. The aim of this Specialist Discussion meeting is 
 to bring together researchers from all these different fields to promo
 te interaction\, networking and discuss strategies to progress our kno
 wledge of these crucial astrophysical events.
LOCATION:online
PRIORITY:3
TRANSP:0
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