TY - JOUR
T1 - SpectAcLE
T2 - An Improved Method for Modeling Light Echo Spectra
AU - Partoush, Roee
AU - Rest, Armin
AU - Jencson, Jacob E.
AU - Poznanski, Dovi
AU - Foley, Ryan J.
AU - Kilpatrick, Charles D.
AU - Andrews, Jennifer E.
AU - Angulo, Rodrigo
AU - Badenes, Carles
AU - Bianco, Federica B.
AU - Filippenko, Alexei V.
AU - Ridden-Harper, Ryan
AU - Li, Xiaolong
AU - Margheim, Steve
AU - Matheson, Thomas
AU - Olsen, Knut A.G.
AU - Siebert, Matthew R.
AU - Smith, Nathan
AU - Welch, Douglas L.
AU - Zenteno, A.
N1 - Publisher Copyright: © 2024. The Author(s). Published by the American Astronomical Society.
PY - 2024/8/1
Y1 - 2024/8/1
N2 - Light echoes give us a unique perspective on the nature of supernovae and nonterminal stellar explosions. Spectroscopy of light echoes can reveal details on the kinematics of the ejecta, probe asymmetry, and reveal details of ejecta interaction with circumstellar matter, thus expanding our understanding of these transient events. However, the spectral features arise from a complex interplay between the source photons, the reflecting dust geometry, and the instrumental setup and observing conditions. In this work, we present an improved method for modeling these effects in light echo spectra, one that relaxes the simplifying assumption of a light-curve-weighted sum, and instead estimates the true relative contribution of each phase of a transient event to the observed spectrum. We discuss our logic, the gains we obtain over light echo analysis methods used in the past, and prospects for further improvements. Lastly, we show how the new method improves our analysis of echoes from Tycho’s supernova (SN 1572) as an example.
AB - Light echoes give us a unique perspective on the nature of supernovae and nonterminal stellar explosions. Spectroscopy of light echoes can reveal details on the kinematics of the ejecta, probe asymmetry, and reveal details of ejecta interaction with circumstellar matter, thus expanding our understanding of these transient events. However, the spectral features arise from a complex interplay between the source photons, the reflecting dust geometry, and the instrumental setup and observing conditions. In this work, we present an improved method for modeling these effects in light echo spectra, one that relaxes the simplifying assumption of a light-curve-weighted sum, and instead estimates the true relative contribution of each phase of a transient event to the observed spectrum. We discuss our logic, the gains we obtain over light echo analysis methods used in the past, and prospects for further improvements. Lastly, we show how the new method improves our analysis of echoes from Tycho’s supernova (SN 1572) as an example.
UR - http://www.scopus.com/inward/record.url?scp=85199567784&partnerID=8YFLogxK
U2 - https://doi.org/10.3847/1538-4357/ad4886
DO - https://doi.org/10.3847/1538-4357/ad4886
M3 - مقالة
SN - 0004-637X
VL - 970
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2
M1 - 119
ER -