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SUMMARY:Distance estimation to supernova SN 2024ws using the EPM and SCM m
 ethods and assessing their applicability based on physical  modeling type 
 IIP supernovae.
DTSTART;VALUE=DATE-TIME:20261027T162500Z
DTEND;VALUE=DATE-TIME:20261027T163000Z
DTSTAMP;VALUE=DATE-TIME:20261026T110917Z
UID:indico-contribution-6410@cern.ch
DESCRIPTION:Speakers: Taisiya Vasilyeva ()\nType IIP supernovae provide an
  opportunity for independent estimation of cosmological distances\, making
  them a valuable tool for constraining the Hubble constant and testing cos
 mological models. \nOne of the methods for determining distances to Type I
 I supernovae is the Expanding Photosphere Method (EPM)\, which does not re
 quire calibration via the cosmic distance ladder. \nThe EPM is based on th
 e geometric relationship between the angular size of the supernova photosp
 here and its radius. The angular size of the photosphere is estimated from
  photometric observations in different photometric bands\, while its radiu
 s can be determined from the photospheric expansion velocity measured from
  spectral lines. These quantities can then be used to estimate the distanc
 e to the supernova. \n\nThis work presents a practical algorithm for apply
 ing the EPM and the Standardized Candle Method (SCM) to photometric and sp
 ectroscopic observational data obtained with a telescope at the Caucasus M
 ountain Observatory of the Sternberg Astronomical Institute\, Lomonosov Mo
 scow State University. \nFor supernova SN 2024ws\, distances obtained usin
 g the two methods are estimated and comparatively analyzed.\nThe validity 
 of the physical assumptions underlying the EPM and SCM is investigated usi
 ng numerical modeling type IIP supernovae.\n\nhttps://indico.particle.meph
 i.ru/event/626/contributions/6410/
LOCATION:Sevastopol hotel Conference Hall 1
URL:https://indico.particle.mephi.ru/event/626/contributions/6410/
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