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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2405.07964 |
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| _version_ | 1866916345652707328 |
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| author | Chen, Xinlei Kumar, Brajesh Er, Xinzhong Guo, Helong Yang, Yuan-Pei Lin, Weikang Fang, Yuan Du, Guowang Liu, Chenxu Zhao, Jiewei Zhang, Tianyu Bao, Yuxi Zou, Xingzhu Pan, Yu Wang, Yu Zhu, Xufeng Chatterjee, Kaushik Liu, Xiangkun Liu, Dezi Lagioia, Edoardo P. Rangwal, Geeta Zhong, Shiyan Zhang, Jinghua Lian, Jianhui Cai, Yongzhi Zhang, Yangwei Liu, Xiaowei |
| author_facet | Chen, Xinlei Kumar, Brajesh Er, Xinzhong Guo, Helong Yang, Yuan-Pei Lin, Weikang Fang, Yuan Du, Guowang Liu, Chenxu Zhao, Jiewei Zhang, Tianyu Bao, Yuxi Zou, Xingzhu Pan, Yu Wang, Yu Zhu, Xufeng Chatterjee, Kaushik Liu, Xiangkun Liu, Dezi Lagioia, Edoardo P. Rangwal, Geeta Zhong, Shiyan Zhang, Jinghua Lian, Jianhui Cai, Yongzhi Zhang, Yangwei Liu, Xiaowei |
| contents | We present early-phase good-cadence (hour-to-day) simultaneous multiband ($ugi$ and $vrz$ bands) imaging of the nearby supernova SN~2024ggi, which exploded in the nearby galaxy, NGC 3621. A quick follow-up was conducted within less than a day after the explosion and continued $\sim$23 days. The $uvg$ band light curves display a rapid rise ($\sim$1.4 mag day$^{-1}$) to maximum in $\sim$4 days and absolute magnitude $M_{g}\sim$--17.75 mag. The post-peak decay rate in redder bands is $\sim$0.01 mag day$^{-1}$. Different colors (e.g., $u-g$ and $v-r$) of SN~2024ggi are slightly redder than SN 2023ixf. A significant rise ($\sim$12.5 kK) in black-body temperature (optical) was noticed within $\sim$2 days after the explosion, which successively decreased, indicating shock break out inside a dense circumstellar medium (CSM) surrounding the progenitor. Using semianalytical modeling, the ejecta mass and progenitor radius were estimated as 1.2 $M_\odot$ and $\sim$550 $R_\odot$. The archival deep images ($g,r,i and z$ bands) from the Dark Energy Camera Legacy Survey were examined, and a possible progenitor was detected in each band ($\sim$22--22.5 mag) and had a mass range of 14--17 $M_\odot$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_07964 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Early-phase simultaneous multiband observations of the Type II supernova SN 2024ggi with Mephisto Chen, Xinlei Kumar, Brajesh Er, Xinzhong Guo, Helong Yang, Yuan-Pei Lin, Weikang Fang, Yuan Du, Guowang Liu, Chenxu Zhao, Jiewei Zhang, Tianyu Bao, Yuxi Zou, Xingzhu Pan, Yu Wang, Yu Zhu, Xufeng Chatterjee, Kaushik Liu, Xiangkun Liu, Dezi Lagioia, Edoardo P. Rangwal, Geeta Zhong, Shiyan Zhang, Jinghua Lian, Jianhui Cai, Yongzhi Zhang, Yangwei Liu, Xiaowei High Energy Astrophysical Phenomena We present early-phase good-cadence (hour-to-day) simultaneous multiband ($ugi$ and $vrz$ bands) imaging of the nearby supernova SN~2024ggi, which exploded in the nearby galaxy, NGC 3621. A quick follow-up was conducted within less than a day after the explosion and continued $\sim$23 days. The $uvg$ band light curves display a rapid rise ($\sim$1.4 mag day$^{-1}$) to maximum in $\sim$4 days and absolute magnitude $M_{g}\sim$--17.75 mag. The post-peak decay rate in redder bands is $\sim$0.01 mag day$^{-1}$. Different colors (e.g., $u-g$ and $v-r$) of SN~2024ggi are slightly redder than SN 2023ixf. A significant rise ($\sim$12.5 kK) in black-body temperature (optical) was noticed within $\sim$2 days after the explosion, which successively decreased, indicating shock break out inside a dense circumstellar medium (CSM) surrounding the progenitor. Using semianalytical modeling, the ejecta mass and progenitor radius were estimated as 1.2 $M_\odot$ and $\sim$550 $R_\odot$. The archival deep images ($g,r,i and z$ bands) from the Dark Energy Camera Legacy Survey were examined, and a possible progenitor was detected in each band ($\sim$22--22.5 mag) and had a mass range of 14--17 $M_\odot$. |
| title | Early-phase simultaneous multiband observations of the Type II supernova SN 2024ggi with Mephisto |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2405.07964 |