Extremely luminous optical afterglow of an energetic gamma-ray burst GRB 230204B
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866909939137511424 |
|---|---|
| author | Gupta, Rahul Racusin, Judith Lipunov, Vladimir Hu, Y. -D. Gulati, Ashna Castro-Tirado, Alberto J. Murphy, Tara Serino, Motoko Zhirkov, Kirill Shilling, S. Oates, Samantha R. Leung, James K. Parsotan, T. Ror, Amit K. Pandey, Shashi B. Iyyani, S. Sharma, V. Aryan, A. Bai, Jin-Ming Balanutsa, Pavel Buckley, David Caballero-García, María D. Carrasco-García, I. M. Castellón, A. Castillo, Sebastián Cui, Chen-Zhou Fan, Yu-Feng Fernández-García, Emilio García-Segura, Guillermo Gritsevich, Maria Guziy, Sergiy Hiriart, David Lee, William H. Jeong, Soomin del Pulgar, Carlos Jesus Pérez Olivares, Ignacio Park, I. H. Pérez-García, Ignacio Razzaque, S. Sánchez-Ramírez, Rubén Tyurina, Nataly Topolev, Vladislav Wang, Chuan-Jun Wu, Si-Yu Xin, Yu-Xin Xiong, Ding-Rong Zhao, Xiao-Hong Mao, Jirong Lun, Bao-Li Kai, Ye |
| author_facet | Gupta, Rahul Racusin, Judith Lipunov, Vladimir Hu, Y. -D. Gulati, Ashna Castro-Tirado, Alberto J. Murphy, Tara Serino, Motoko Zhirkov, Kirill Shilling, S. Oates, Samantha R. Leung, James K. Parsotan, T. Ror, Amit K. Pandey, Shashi B. Iyyani, S. Sharma, V. Aryan, A. Bai, Jin-Ming Balanutsa, Pavel Buckley, David Caballero-García, María D. Carrasco-García, I. M. Castellón, A. Castillo, Sebastián Cui, Chen-Zhou Fan, Yu-Feng Fernández-García, Emilio García-Segura, Guillermo Gritsevich, Maria Guziy, Sergiy Hiriart, David Lee, William H. Jeong, Soomin del Pulgar, Carlos Jesus Pérez Olivares, Ignacio Park, I. H. Pérez-García, Ignacio Razzaque, S. Sánchez-Ramírez, Rubén Tyurina, Nataly Topolev, Vladislav Wang, Chuan-Jun Wu, Si-Yu Xin, Yu-Xin Xiong, Ding-Rong Zhao, Xiao-Hong Mao, Jirong Lun, Bao-Li Kai, Ye |
| contents | Robotic telescope networks play an important role in capturing early and bright optical afterglows, providing critical insights into the energetics and emission mechanisms of GRBs. In this study, we analyze GRB 230204B, an exceptionally energetic and multi-pulsed long GRB, detected by the Fermi GBM and MAXI detectors, with an isotropic equivalent gamma-ray energy exceeding 10$^{54}$ erg. Time-resolved spectral analysis reveals a transition in the prompt emission from hard (sub-photospheric dominated) spectra during early pulses to softer (synchrotron radiation dominated) spectra in later pulses, indicative of a hybrid jet composition. We report the discovery and characterization of the optical afterglow using the MASTER and BOOTES robotic telescope networks, which enabled rapid follow-up observations starting at $\sim$1.3 ks post-burst. The optical luminosity at this time was exceptionally high, surpassing that of many other optically bright GRBs, such as GRB 990123, GRB 080319B, etc. This places the burst among the most luminous optical GRBs observed to date. Long-term radio observations extending to 335 days post-burst were conducted with the ATCA. Multi-wavelength modeling was conducted using an external ISM forward-shock top-hat jet model with \sw{afterglowpy}. The results reveal a narrow and highly collimated jet with a circumburst density of $n_{0} \sim$ 28.12 cm$^{-3}$, kinetic energy $E_{\rm K} \sim$ 4.18 $\times 10^{55}$ erg, and a relatively low value of $ε_{B}$ = 2.14 $\times 10^{-6}$, indicating shock-compression of magnetic field in the surrounding interstellar medium. We constrained a low radiative efficiency of $\sim$ 4.3 \%. This study highlights the indispensable contribution of robotic networks to early afterglow observations and advances our understanding of GRB 230204B unique characteristics and underlying jet physics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_18152 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Extremely luminous optical afterglow of an energetic gamma-ray burst GRB 230204B Gupta, Rahul Racusin, Judith Lipunov, Vladimir Hu, Y. -D. Gulati, Ashna Castro-Tirado, Alberto J. Murphy, Tara Serino, Motoko Zhirkov, Kirill Shilling, S. Oates, Samantha R. Leung, James K. Parsotan, T. Ror, Amit K. Pandey, Shashi B. Iyyani, S. Sharma, V. Aryan, A. Bai, Jin-Ming Balanutsa, Pavel Buckley, David Caballero-García, María D. Carrasco-García, I. M. Castellón, A. Castillo, Sebastián Cui, Chen-Zhou Fan, Yu-Feng Fernández-García, Emilio García-Segura, Guillermo Gritsevich, Maria Guziy, Sergiy Hiriart, David Lee, William H. Jeong, Soomin del Pulgar, Carlos Jesus Pérez Olivares, Ignacio Park, I. H. Pérez-García, Ignacio Razzaque, S. Sánchez-Ramírez, Rubén Tyurina, Nataly Topolev, Vladislav Wang, Chuan-Jun Wu, Si-Yu Xin, Yu-Xin Xiong, Ding-Rong Zhao, Xiao-Hong Mao, Jirong Lun, Bao-Li Kai, Ye High Energy Astrophysical Phenomena Robotic telescope networks play an important role in capturing early and bright optical afterglows, providing critical insights into the energetics and emission mechanisms of GRBs. In this study, we analyze GRB 230204B, an exceptionally energetic and multi-pulsed long GRB, detected by the Fermi GBM and MAXI detectors, with an isotropic equivalent gamma-ray energy exceeding 10$^{54}$ erg. Time-resolved spectral analysis reveals a transition in the prompt emission from hard (sub-photospheric dominated) spectra during early pulses to softer (synchrotron radiation dominated) spectra in later pulses, indicative of a hybrid jet composition. We report the discovery and characterization of the optical afterglow using the MASTER and BOOTES robotic telescope networks, which enabled rapid follow-up observations starting at $\sim$1.3 ks post-burst. The optical luminosity at this time was exceptionally high, surpassing that of many other optically bright GRBs, such as GRB 990123, GRB 080319B, etc. This places the burst among the most luminous optical GRBs observed to date. Long-term radio observations extending to 335 days post-burst were conducted with the ATCA. Multi-wavelength modeling was conducted using an external ISM forward-shock top-hat jet model with \sw{afterglowpy}. The results reveal a narrow and highly collimated jet with a circumburst density of $n_{0} \sim$ 28.12 cm$^{-3}$, kinetic energy $E_{\rm K} \sim$ 4.18 $\times 10^{55}$ erg, and a relatively low value of $ε_{B}$ = 2.14 $\times 10^{-6}$, indicating shock-compression of magnetic field in the surrounding interstellar medium. We constrained a low radiative efficiency of $\sim$ 4.3 \%. This study highlights the indispensable contribution of robotic networks to early afterglow observations and advances our understanding of GRB 230204B unique characteristics and underlying jet physics. |
| title | Extremely luminous optical afterglow of an energetic gamma-ray burst GRB 230204B |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2412.18152 |