Repozitorij Univerze v Novi Gorici

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Naslov:Strongly Lensed Supernovae in Well-Studied Galaxy Clusters with the Vera C. Rubin Observatory
Avtorji:Petrushevska, Tanja (Avtor)
Datoteke:.pdf symmetry-967869.pdf (863,97 KB)
 
Jezik:Angleški jezik
Vrsta gradiva:Delo ni kategorizirano (r6)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:Strong lensing by galaxy clusters can be used to significantly expand the survey reach, thus allowing observation of magnified high-redshift supernovae that otherwise would remain undetected. Strong lensing can also provide multiple images of the galaxies that lie behind the clusters. Detection of strongly lensed Type Ia supernovae (SNe Ia) is especially useful because of their standardizable brightness, as they can be used to improve either cluster lensing models or independent measurements of cosmological parameters. The cosmological parameter, the Hubble constant, is of particular interest given the discrepancy regarding its value from measurements with different approaches. Here, we explore the feasibility of the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) of detecting strongly lensed SNe in the field of five galaxy clusters (Abell 1689 and Hubble Frontier Fields clusters) that have well-studied lensing models. Considering the 88 systems composed of 268 individual multiple images in the five cluster fields, we find that the LSST will be sensitive to SNe Ia (SNe IIP) exploding in 41 (23) galaxy images. The range of redshift of these galaxies is between 1.01 < z < 3.05. During its 10 years of operation, LSST is expected to detect 0.2 ± 0.1 SN Ia and 0.9 ± 0.3 core collapse SNe. However, as LSST will observe many more massive galaxy clusters, it is likely that the expectations are higher. We stress the importance of having an additional observing program for photometric and spectroscopic follow-up of the strongly lensed SNe detected by LSST.
Ključne besede:supernovae, strong gravitational lensing, galaxy clusters
Leto izida:2020
Št. strani:13
Številčenje:12
COBISS_ID:39882243 Povezava se odpre v novem oknu
URN:URN:SI:UNG:REP:IWK3NYPC
DOI:10.3390/sym12121966 Povezava se odpre v novem oknu
Licenca:CC BY 4.0
To delo je dosegljivo pod licenco Creative Commons Priznanje avtorstva 4.0 Mednarodna
Število ogledov:1310
Število prenosov:62
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Gradivo je del revije

Naslov:Symmetry
Založnik:MDPI
Leto izida:2020

Gradivo je financirano iz projekta

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Program financ.:Raziskovalni projekti - podokrtorski
Številka projekta:Z1-1853
Naslov:Unveiling the expansion of the Universe with strongly lensed supernovae
Akronim:
ID projekta:info:eu-repo/grantAgreement/ARRS/Raziskovalni%20projekti%20-%20podokrtorski/Z1-1853

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