Detecting strongly lensed supernovae at z ~ 5-7 with LSST
| Autor: | Ralf S. Klessen, Daniel J. Whalen, M. Carrasco, Thomas E. Collett, Mattis Magg, Matteo Maturi, Claes-Erik Rydberg |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
early universe [first stars]
Cosmology and Nongalactic Astrophysics (astro-ph.CO) astro-ph.GA Population FOS: Physical sciences dark ages [cosmology] Large Synoptic Survey Telescope Astrophysics 01 natural sciences 0103 physical sciences Population III [stars] education 010303 astronomy & astrophysics Reionization Galaxy cluster STFC Physics High Energy Astrophysical Phenomena (astro-ph.HE) astro-ph.HE education.field_of_study 010308 nuclear & particles physics Star formation RCUK Astronomy and Astrophysics Astrophysics - Astrophysics of Galaxies Galaxy Redshift observations [cosmology] Gravitational lens Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) strong [gravitational lensing] astro-ph.CO reionization ST/P000509/1 Astrophysics - High Energy Astrophysical Phenomena general [supernovae] high-redshift [galaxies] Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Rydberg, C-E, Whalen, D J, Maturi, M, Collett, T, Carrasco, M, Magg, M & Klessen, R S 2020, ' Detecting strongly lensed supernovae at z ~ 5-7 with LSST ', Monthly Notices of the Royal Astronomical Society, vol. 491, no. 2, pp. 2447-2459 . https://doi.org/10.1093/mnras/stz3203 |
| Popis: | Supernovae (SNe) could be powerful probes of the properties of stars and galaxies at high redshifts in future surveys. Wide fields and longer exposure times are required to offset diminishing star formation rates and lower fluxes to detect useful numbers of events at high redshift. In principle, the Large Synoptic Survey Telescope (LSST) could discover large numbers of early SNe because of its wide fields but only at lower redshifts because of its AB mag limit of ~ 24. But gravitational lensing by galaxy clusters and massive galaxies could boost flux from ancient SNe and allow LSST to detect them at earlier times. Here, we calculate detection rates for lensed SNe at z ~ 5 - 7 for LSST. We find that the LSST Wide Deep Fast survey could detect up to 120 lensed Population (Pop) I and II SNe but no lensed Pop III SNe. Deep-drilling programs in a single 10 square degree FoV could detect Pop I and II core-collapse SNe and Pop III pair-instability SNe at AB magnitudes of 27 - 28 and 26, respectively. An alternative deep survey over 80 nights with a one-year cadence could find ~ 8 Pop III SNe. Comment: 12 pages, 6 figures, 3 tables, submitted to MNRAS. Difference between v1 and v2: the estimates of detection limits for LSST was changed to fainter limits thus impacting the number of predicted detections. Predicted numbers of detections for deep-drilling surveys were added |
| Databáze: | OpenAIRE |
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