Reference : HOLISMOKES. V. Microlensing of type II supernovae and time-delay inference through sp...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/263813
HOLISMOKES. V. Microlensing of type II supernovae and time-delay inference through spectroscopic phase retrieval
English
Bayer, J. [Max-Planck-Institut für Astrophysik, Karl-Schwarzschild Str. 1, 85748, Garching, Germany ; Physik-Department, Technische Universität München, James-Franck-Straße 1, 85748, Garching, Germany]
Huber, S. [Max-Planck-Institut für Astrophysik, Karl-Schwarzschild Str. 1, 85748, Garching, Germany; Physik-Department, Technische Universität München, James-Franck-Straße 1, 85748, Garching, Germany]
Vogl, C. [Max-Planck-Institut für Astrophysik, Karl-Schwarzschild Str. 1, 85748, Garching, Germany; Physik-Department, Technische Universität München, James-Franck-Straße 1, 85748, Garching, Germany; Exzellenzcluster ORIGINS, Boltzmannstr. 2, 85748, Garching, Germany]
Suyu, S. H. [Max-Planck-Institut für Astrophysik, Karl-Schwarzschild Str. 1, 85748, Garching, Germany; Physik-Department, Technische Universität München, James-Franck-Straße 1, 85748, Garching, Germany; Institute of Astronomy and Astrophysics, Academia Sinica, 11F of ASMAB, No.1, Section 4, Roosevelt Road, Taipei, 10617, Taiwan]
Taubenberger, S. [Max-Planck-Institut für Astrophysik, Karl-Schwarzschild Str. 1, 85748, Garching, Germany]
Sluse, Dominique mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Chan, J. H. H. [Institute of Physics, Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne(EPFL), Observatoire de Sauverny, 1290, Versoix, Switzerland]
Kerzendorf, W. E. [Department of Physics and Astronomy, Michigan State University, East Lansing, MI, 48824, USA; Department of Computational Mathematics, Science, and Engineering, Michigan State University, East Lansing, MI, 48824, USA)]
1-Sep-2021
Astronomy and Astrophysics
EDP Sciences
653
A29
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] gravitational lensing: strong ; gravitational lensing: micro ; distance scale ; supernovae: individual: type II ; Astrophysics - Cosmology and Nongalactic Astrophysics ; Astrophysics - High Energy Astrophysical Phenomena
[en] We investigate strongly gravitationally lensed type II supernovae (LSNe II) for time-delay cosmography, incorporating microlensing effects; this expands on previous microlensing studies of type Ia supernovae (SNe Ia). We use the radiative-transfer code TARDIS to recreate five spectra of the prototypical SN 1999em at different times within the plateau phase of the light curve. The microlensing-induced deformations of the spectra and light curves are calculated by placing the SN into magnification maps generated with the code GERLUMPH. We study the impact of microlensing on the color curves and find that there is no strong influence on them during the investigated time interval of the plateau phase. The color curves are only weakly affected by microlensing due to the almost achromatic behavior of the intensity profiles. However, the lack of nonlinear structure in the color curves during the plateau phase of type II-plateau supernovae makes time-delay measurements more challenging compared to SN Ia color curves, given the possible presence of differential dust extinction. Therefore, we further investigate SN phase inference through spectral absorption lines under the influence of microlensing and Gaussian noise. As the spectral features shift to longer wavelengths with progressing time after explosion, the measured wavelength of a specific absorption line provides information on the epoch of the SN. The comparison between retrieved epochs of two observed lensing images then gives the time delay of the images. We find that the phase retrieval method that uses spectral features yields accurate delays with uncertainties of ≲2 days, making it a promising approach.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/263813
10.1051/0004-6361/202040169
https://ui.adsabs.harvard.edu/abs/2021A&A...653A..29B
Originally published in Astronomy & Astrophysics, Volume 653, id.A29, 19 pp.
H2020 ; 787886 - COSMICLENS - Cosmology with Strong Gravitational Lensing

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