Characterizing the Ordinary Broad-line Type Ic SN 2023pel from the Energetic GRB 230812B

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Fältnamn	Indikatorer	Metadata
000		04519naa a2200781 4500
001		oai:DiVA.org:su-226049
003		SwePub
008		240212s2024 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-2260492 URI
024	7	a https://doi.org/10.3847/2041-8213/ad16e72 DOI
040		a (SwePub)su
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Srinivasaragavan, Gokul P.4 aut
245	1 0	a Characterizing the Ordinary Broad-line Type Ic SN 2023pel from the Energetic GRB 230812B
264	1	c 2024
338		a print2 rdacarrier
520		a We report observations of the optical counterpart of the long gamma-ray burst (GRB) GRB 230812B and its associated supernova (SN) SN 2023pel. The proximity (z = 0.36) and high energy (Eγ,iso ∼ 1053 erg) make it an important event to study as a probe of the connection between massive star core collapse and relativistic jet formation. With a phenomenological power-law model for the optical afterglow, we find a late-time flattening consistent with the presence of an associated SN. SN 2023pel has an absolute peak r-band magnitude of Mr = −19.46 ± 0.18 mag (about as bright as SN 1998bw) and evolves on quicker timescales. Using a radioactive heating model, we derive a nickel mass powering the SN of MNi = 0.38 ± 0.01 M⊙ and a peak bolometric luminosity of Lbol ∼ 1.3 × 1043 erg s−1. We confirm SN 2023pel's classification as a broad-line Type Ic SN with a spectrum taken 15.5 days after its peak in the r band and derive a photospheric expansion velocity of vph = 11,300 ± 1600 km s−1 at that phase. Extrapolating this velocity to the time of maximum light, we derive the ejecta mass Mej = 1.0 ± 0.6 M⊙ and kinetic energy EKE = 1.3 +3.3/-1.2 x 1051 erg. We find that GRB 230812B/SN 2023pel has SN properties that are mostly consistent with the overall GRB-SN population. The lack of correlations found in the GRB-SN population between SN brightness and Eγ,iso for their associated GRBs across a broad range of 7 orders of magnitude provides further evidence that the central engine powering the relativistic ejecta is not coupled to the SN powering mechanism in GRB-SN systems.
650	7	a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650	7	a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
700	1	a Swain, Vishwajeet4 aut
700	1	a O'Connor, Brendan4 aut
700	1	a Anand, Shreya4 aut
700	1	a Ahumada, Tomás4 aut
700	1	a Perley, Daniel4 aut
700	1	a Stein, Robert4 aut
700	1	a Sollerman, Jesper,d 1968-u Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)solle
700	1	a Fremling, Christoffer4 aut
700	1	a Cenko, S. Bradley4 aut
700	1	a Antier, S.4 aut
700	1	a Guessoum, Nidhal4 aut
700	1	a Hussenot-Desenonges, Thomas4 aut
700	1	a Hello, Patrice4 aut
700	1	a Lesage, Stephen4 aut
700	1	a Hammerstein, Erica4 aut
700	1	a Miller, M. Coleman4 aut
700	1	a Andreoni, Igor4 aut
700	1	a Bhalerao, Varun4 aut
700	1	a Bloom, Joshua S.4 aut
700	1	a Dutta, Anirban4 aut
700	1	a Gal-Yam, Avishay4 aut
700	1	a Hinds, K-Ryan4 aut
700	1	a Jaodand, Amruta4 aut
700	1	a Kasliwal, Mansi4 aut
700	1	a Kumar, Harsh4 aut
700	1	a Kutyrev, Alexander S.4 aut
700	1	a Ragosta, Fabio4 aut
700	1	a Ravi, Vikram4 aut
700	1	a Sharma, Kritti4 aut
700	1	a Singh Teja, Rishabh4 aut
700	1	a Yang, Sheng4 aut
700	1	a Anupama, G. C.4 aut
700	1	a Bellm, Eric C.4 aut
700	1	a Coughlin, Michael W.4 aut
700	1	a Mahabal, Ashish A.4 aut
700	1	a Masci, Frank J.4 aut
700	1	a Pathak, Utkarsh4 aut
700	1	a Purdum, Josiah4 aut
700	1	a Roberts, Oliver J.4 aut
700	1	a Smith, Roger4 aut
700	1	a Wold, Avery4 aut
710	2	a Stockholms universitetb Institutionen för astronomi4 org
773	0	t Astrophysical Journal Lettersg 960:2q 960:2x 2041-8205x 2041-8213
856	4	u https://doi.org/10.3847/2041-8213/ad16e7y Fulltext
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-226049
856	4 8	u https://doi.org/10.3847/2041-8213/ad16e7

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Av författaren/redakt...: Srinivasaragavan ...; Swain, Vishwajee ...; O'Connor, Brenda ...; Anand, Shreya; Ahumada, Tomás; Perley, Daniel; visa fler...; Stein, Robert; Sollerman, Jespe ...; Fremling, Christ ...; Cenko, S. Bradle ...; Antier, S.; Guessoum, Nidhal; Hussenot-Desenon ...; Hello, Patrice; Lesage, Stephen; Hammerstein, Eri ...; Miller, M. Colem ...; Andreoni, Igor; Bhalerao, Varun; Bloom, Joshua S.; Dutta, Anirban; Gal-Yam, Avishay; Hinds, K-Ryan; Jaodand, Amruta; Kasliwal, Mansi; Kumar, Harsh; Kutyrev, Alexand ...; Ragosta, Fabio; Ravi, Vikram; Sharma, Kritti; Singh Teja, Rish ...; Yang, Sheng; Anupama, G. C.; Bellm, Eric C.; Coughlin, Michae ...; Mahabal, Ashish ...; Masci, Frank J.; Pathak, Utkarsh; Purdum, Josiah; Roberts, Oliver ...; Smith, Roger; Wold, Avery; visa färre...

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