Discovery of the Fastest Early Optical Emission from Overluminous SN Ia 2020hvf: A Thermonuclear Explosion within a Dense Circumstellar Environment

In this Letter we report a discovery of a prominent flash of a peculiar overluminous Type Ia supernova, SN 2020hvf, in about 5 hr of the supernova explosion by the first wide-field mosaic CMOS sensor imager, the Tomo-e Gozen Camera. The fast evolution of the early flash was captured by intensive int...

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Veröffentlicht in:Astrophysical journal. Letters 2021-12, Vol.923 (1), p.L8
Hauptverfasser: Jiang, Ji-an, Maeda, Keiichi, Kawabata, Miho, Doi, Mamoru, Shigeyama, Toshikazu, Tanaka, Masaomi, Tominaga, Nozomu, Nomoto, Ken’ichi, Niino, Yuu, Sako, Shigeyuki, Ohsawa, Ryou, Schramm, Malte, Yamanaka, Masayuki, Kobayashi, Naoto, Takahashi, Hidenori, Nakaoka, Tatsuya, Kawabata, Koji S., Isogai, Keisuke, Aoki, Tsutomu, Kondo, Sohei, Mori, Yuki, Arimatsu, Ko, Kasuga, Toshihiro, Okumura, Shin-ichiro, Urakawa, Seitaro, Reichart, Daniel E., Taguchi, Kenta, Arima, Noriaki, Beniyama, Jin, Uno, Kohki, Hamada, Taisei
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container_title Astrophysical journal. Letters
container_volume 923
creator Jiang, Ji-an
Maeda, Keiichi
Kawabata, Miho
Doi, Mamoru
Shigeyama, Toshikazu
Tanaka, Masaomi
Tominaga, Nozomu
Nomoto, Ken’ichi
Niino, Yuu
Sako, Shigeyuki
Ohsawa, Ryou
Schramm, Malte
Yamanaka, Masayuki
Kobayashi, Naoto
Takahashi, Hidenori
Nakaoka, Tatsuya
Kawabata, Koji S.
Isogai, Keisuke
Aoki, Tsutomu
Kondo, Sohei
Mori, Yuki
Arimatsu, Ko
Kasuga, Toshihiro
Okumura, Shin-ichiro
Urakawa, Seitaro
Reichart, Daniel E.
Taguchi, Kenta
Arima, Noriaki
Beniyama, Jin
Uno, Kohki
Hamada, Taisei
description In this Letter we report a discovery of a prominent flash of a peculiar overluminous Type Ia supernova, SN 2020hvf, in about 5 hr of the supernova explosion by the first wide-field mosaic CMOS sensor imager, the Tomo-e Gozen Camera. The fast evolution of the early flash was captured by intensive intranight observations via the Tomo-e Gozen high-cadence survey. Numerical simulations show that such a prominent and fast early emission is most likely generated from an interaction between 0.01 M ⊙ circumstellar material (CSM) extending to a distance of ∼10 13 cm and supernova ejecta soon after the explosion, indicating a confined dense CSM formation at the final evolution stage of the progenitor of SN 2020hvf. Based on the CSM–ejecta interaction-induced early flash, the overluminous light curve, and the high ejecta velocity of SN 2020hvf, we suggest that the SN 2020hvf may originate from a thermonuclear explosion of a super-Chandrasekhar-mass white dwarf (“super- M Ch WD”). Systematical investigations on explosion mechanisms and hydrodynamic simulations of the super- M Ch WD explosion are required to further test the suggested scenario and understand the progenitor of this peculiar supernova.
doi_str_mv 10.3847/2041-8213/ac375f
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Letters</title><addtitle>APJL</addtitle><addtitle>Astrophys. J. Lett</addtitle><description>In this Letter we report a discovery of a prominent flash of a peculiar overluminous Type Ia supernova, SN 2020hvf, in about 5 hr of the supernova explosion by the first wide-field mosaic CMOS sensor imager, the Tomo-e Gozen Camera. The fast evolution of the early flash was captured by intensive intranight observations via the Tomo-e Gozen high-cadence survey. Numerical simulations show that such a prominent and fast early emission is most likely generated from an interaction between 0.01 M ⊙ circumstellar material (CSM) extending to a distance of ∼10 13 cm and supernova ejecta soon after the explosion, indicating a confined dense CSM formation at the final evolution stage of the progenitor of SN 2020hvf. 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Systematical investigations on explosion mechanisms and hydrodynamic simulations of the super- M Ch WD explosion are required to further test the suggested scenario and understand the progenitor of this peculiar supernova.</description><subject>Ejecta</subject><subject>Emission</subject><subject>Emissions</subject><subject>Evolution</subject><subject>Explosions</subject><subject>Light curve</subject><subject>Numerical simulations</subject><subject>Supernova</subject><subject>Supernovae</subject><subject>Thermonuclear explosions</subject><subject>Time domain astronomy</subject><subject>Transient sources</subject><subject>Type Ia supernovae</subject><subject>White dwarf stars</subject><issn>2041-8205</issn><issn>2041-8213</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>O3W</sourceid><recordid>eNp1kM1PwkAQxRujiYjePU7iVWQ_Smm9ET6UhMhBPDfbZTYsaXfrbovyd_gPu4jBk6eZTN7vvcyLoltKHngaD_uMxLSXMsr7QvLhQJ1FndPp_LSTwWV05f2WEEYSmnair4n20u7Q7cEqaDYIM-Eb9A1MhSv3sKwbLUUJ00p7r60B5WwFywCUbaWNbT28vsBcAAuOm516hBGsNugqa1pZonAw_axL-4N-6GajDQiYoPEIY-1kW4WwsjzIzE47ayo0zXV0oUTp8eZ3dqO32XQ1fu4tlk_z8WjRk3FCmh6V6zgbpKSIMWNZUag14ZgVnKDCIa65pLRIkoQPUr4OAEPGMqWQKlbEWSB4N7o7-tbOvrfh53xrW2dCZM4Skg05ZYwHFTmqpLPeO1R57XQl3D6nJD9Unx-6zQ8958fqA3J_RLSt_zz_lX8DVLaGLA</recordid><startdate>20211201</startdate><enddate>20211201</enddate><creator>Jiang, Ji-an</creator><creator>Maeda, Keiichi</creator><creator>Kawabata, Miho</creator><creator>Doi, Mamoru</creator><creator>Shigeyama, Toshikazu</creator><creator>Tanaka, Masaomi</creator><creator>Tominaga, Nozomu</creator><creator>Nomoto, Ken’ichi</creator><creator>Niino, Yuu</creator><creator>Sako, Shigeyuki</creator><creator>Ohsawa, Ryou</creator><creator>Schramm, Malte</creator><creator>Yamanaka, Masayuki</creator><creator>Kobayashi, Naoto</creator><creator>Takahashi, Hidenori</creator><creator>Nakaoka, Tatsuya</creator><creator>Kawabata, Koji S.</creator><creator>Isogai, Keisuke</creator><creator>Aoki, Tsutomu</creator><creator>Kondo, Sohei</creator><creator>Mori, Yuki</creator><creator>Arimatsu, Ko</creator><creator>Kasuga, Toshihiro</creator><creator>Okumura, Shin-ichiro</creator><creator>Urakawa, Seitaro</creator><creator>Reichart, Daniel E.</creator><creator>Taguchi, Kenta</creator><creator>Arima, Noriaki</creator><creator>Beniyama, Jin</creator><creator>Uno, Kohki</creator><creator>Hamada, Taisei</creator><general>The American Astronomical Society</general><general>IOP Publishing</general><scope>O3W</scope><scope>TSCCA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>8FD</scope><scope>H8D</scope><scope>KL.</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-5060-3673</orcidid><orcidid>https://orcid.org/0000-0002-8792-2205</orcidid><orcidid>https://orcid.org/0000-0001-6099-9539</orcidid><orcidid>https://orcid.org/0000-0001-7501-8983</orcidid><orcidid>https://orcid.org/0000-0001-8537-3153</orcidid><orcidid>https://orcid.org/0000-0002-4540-4928</orcidid><orcidid>https://orcid.org/0000-0002-6480-3799</orcidid><orcidid>https://orcid.org/0000-0001-5903-7391</orcidid><orcidid>https://orcid.org/0000-0001-9553-0685</orcidid><orcidid>https://orcid.org/0000-0002-4060-5931</orcidid><orcidid>https://orcid.org/0000-0002-1873-3494</orcidid><orcidid>https://orcid.org/0000-0001-7825-0075</orcidid><orcidid>https://orcid.org/0000-0002-6765-8988</orcidid><orcidid>https://orcid.org/0000-0001-5797-6010</orcidid><orcidid>https://orcid.org/0000-0003-1260-9502</orcidid><orcidid>https://orcid.org/0000-0001-5322-5076</orcidid><orcidid>https://orcid.org/0000-0002-2217-1359</orcidid><orcidid>https://orcid.org/0000-0002-9092-0593</orcidid><orcidid>https://orcid.org/0000-0001-9456-3709</orcidid><orcidid>https://orcid.org/0000-0001-8253-6850</orcidid><orcidid>https://orcid.org/0000-0003-4578-2619</orcidid><orcidid>https://orcid.org/0000-0003-2611-7269</orcidid></search><sort><creationdate>20211201</creationdate><title>Discovery of the Fastest Early Optical Emission from Overluminous SN Ia 2020hvf: A Thermonuclear Explosion within a Dense Circumstellar Environment</title><author>Jiang, Ji-an ; Maeda, Keiichi ; Kawabata, Miho ; Doi, Mamoru ; Shigeyama, Toshikazu ; Tanaka, Masaomi ; Tominaga, Nozomu ; Nomoto, Ken’ichi ; Niino, Yuu ; Sako, Shigeyuki ; Ohsawa, Ryou ; Schramm, Malte ; Yamanaka, Masayuki ; Kobayashi, Naoto ; Takahashi, Hidenori ; Nakaoka, Tatsuya ; Kawabata, Koji S. ; Isogai, Keisuke ; Aoki, Tsutomu ; Kondo, Sohei ; Mori, Yuki ; Arimatsu, Ko ; Kasuga, Toshihiro ; Okumura, Shin-ichiro ; Urakawa, Seitaro ; Reichart, Daniel E. ; Taguchi, Kenta ; Arima, Noriaki ; Beniyama, Jin ; Uno, Kohki ; Hamada, Taisei</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c460t-1cd49580b4e929bbfd03e9b30efe7ed3c11b6663583d4602e229ffe1f2b499293</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Ejecta</topic><topic>Emission</topic><topic>Emissions</topic><topic>Evolution</topic><topic>Explosions</topic><topic>Light curve</topic><topic>Numerical simulations</topic><topic>Supernova</topic><topic>Supernovae</topic><topic>Thermonuclear explosions</topic><topic>Time domain astronomy</topic><topic>Transient sources</topic><topic>Type Ia supernovae</topic><topic>White dwarf stars</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jiang, Ji-an</creatorcontrib><creatorcontrib>Maeda, Keiichi</creatorcontrib><creatorcontrib>Kawabata, Miho</creatorcontrib><creatorcontrib>Doi, Mamoru</creatorcontrib><creatorcontrib>Shigeyama, Toshikazu</creatorcontrib><creatorcontrib>Tanaka, Masaomi</creatorcontrib><creatorcontrib>Tominaga, Nozomu</creatorcontrib><creatorcontrib>Nomoto, Ken’ichi</creatorcontrib><creatorcontrib>Niino, Yuu</creatorcontrib><creatorcontrib>Sako, Shigeyuki</creatorcontrib><creatorcontrib>Ohsawa, Ryou</creatorcontrib><creatorcontrib>Schramm, Malte</creatorcontrib><creatorcontrib>Yamanaka, Masayuki</creatorcontrib><creatorcontrib>Kobayashi, Naoto</creatorcontrib><creatorcontrib>Takahashi, Hidenori</creatorcontrib><creatorcontrib>Nakaoka, Tatsuya</creatorcontrib><creatorcontrib>Kawabata, Koji S.</creatorcontrib><creatorcontrib>Isogai, Keisuke</creatorcontrib><creatorcontrib>Aoki, Tsutomu</creatorcontrib><creatorcontrib>Kondo, Sohei</creatorcontrib><creatorcontrib>Mori, Yuki</creatorcontrib><creatorcontrib>Arimatsu, Ko</creatorcontrib><creatorcontrib>Kasuga, Toshihiro</creatorcontrib><creatorcontrib>Okumura, Shin-ichiro</creatorcontrib><creatorcontrib>Urakawa, Seitaro</creatorcontrib><creatorcontrib>Reichart, Daniel E.</creatorcontrib><creatorcontrib>Taguchi, Kenta</creatorcontrib><creatorcontrib>Arima, Noriaki</creatorcontrib><creatorcontrib>Beniyama, Jin</creatorcontrib><creatorcontrib>Uno, Kohki</creatorcontrib><creatorcontrib>Hamada, Taisei</creatorcontrib><collection>IOP Publishing Free Content</collection><collection>IOPscience (Open Access)</collection><collection>CrossRef</collection><collection>Meteorological &amp; 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issn 2041-8205
2041-8213
language eng
recordid cdi_proquest_journals_2609731223
source IOP Publishing Free Content; Institute of Physics IOPscience extra; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection
subjects Ejecta
Emission
Emissions
Evolution
Explosions
Light curve
Numerical simulations
Supernova
Supernovae
Thermonuclear explosions
Time domain astronomy
Transient sources
Type Ia supernovae
White dwarf stars
title Discovery of the Fastest Early Optical Emission from Overluminous SN Ia 2020hvf: A Thermonuclear Explosion within a Dense Circumstellar Environment
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