A Repeating Fast Radio Burst Source in a Low-Luminosity Dwarf Galaxy
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arXiv
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| Natura: | Preprint |
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2024
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| author | Hewitt, Danté M. Bhardwaj, Mohit Gordon, Alexa C. Kirichenko, Aida Nimmo, Kenzie Bhandari, Shivani Cognard, Ismaël Fong, Wen-fai de Paz, Armando Gil Gopinath, Akshatha Hessels, Jason W. T. Kirsten, Franz Marcote, Benito Bezrukovs, Vladislavs Blaauw, Richard Bray, Justin D. Buttaccio, Salvatore Cassanelli, Tomas Chawla, Pragya Corongiu, Alessandro Deng, William Didehbani, Hannah N. Dong, Yuxin Gawroński, Marcin P. Giroletti, Marcello Guillemot, Lucas Huang, Jeff Joseph, Ronniy C. Kaspi, Victoria M. Lazda, Mattias Lindqvist, Michael Giuseppe, Maccaferri Mas-Ribas, Lluis Masui, Kiyoshi W. Mckinven, Ryan Michilli, Daniele Nugent, Anya E. Ould-Boukattine, Omar S. Paragi, Zsolt Pearlman, Aaron B. Pen, Ue-Li Pleunis, Ziggy Sand, Ketan R. Shah, Vishwangi Shin, Kaitlyn Snelders, Mark P. Venturi, Tiziana Wang, Na Williams-Baldwin, David R. A. Yang, Jun Yuan, Jianping P. |
| author_facet | Hewitt, Danté M. Bhardwaj, Mohit Gordon, Alexa C. Kirichenko, Aida Nimmo, Kenzie Bhandari, Shivani Cognard, Ismaël Fong, Wen-fai de Paz, Armando Gil Gopinath, Akshatha Hessels, Jason W. T. Kirsten, Franz Marcote, Benito Bezrukovs, Vladislavs Blaauw, Richard Bray, Justin D. Buttaccio, Salvatore Cassanelli, Tomas Chawla, Pragya Corongiu, Alessandro Deng, William Didehbani, Hannah N. Dong, Yuxin Gawroński, Marcin P. Giroletti, Marcello Guillemot, Lucas Huang, Jeff Joseph, Ronniy C. Kaspi, Victoria M. Lazda, Mattias Lindqvist, Michael Giuseppe, Maccaferri Mas-Ribas, Lluis Masui, Kiyoshi W. Mckinven, Ryan Michilli, Daniele Nugent, Anya E. Ould-Boukattine, Omar S. Paragi, Zsolt Pearlman, Aaron B. Pen, Ue-Li Pleunis, Ziggy Sand, Ketan R. Shah, Vishwangi Shin, Kaitlyn Snelders, Mark P. Venturi, Tiziana Wang, Na Williams-Baldwin, David R. A. Yang, Jun Yuan, Jianping P. |
| contents | We present the localization and host galaxy of FRB 20190208A, a repeating source of fast radio bursts (FRBs) discovered using CHIME/FRB. As part of the PRECISE repeater localization program on the EVN, we monitored FRB 20190208A for 65.6 hours at $\sim1.4$ GHz and detected a single burst, which led to its VLBI localization with 260 mas uncertainty (2$σ$). Follow-up optical observations with the MMT Observatory ($i\gtrsim 25.7$ mag (AB)) found no visible host at the FRB position. Subsequent deeper observations with the GTC, however, revealed an extremely faint galaxy ($r=27.32 \pm0.16$ mag), very likely ($99.95 \%$) associated with FRB 20190208A. Given the dispersion measure of the FRB ($\sim580$ pc cm$^{-3}$), even the most conservative redshift estimate ($z_{\mathrm{max}}\sim0.83$) implies that this is the lowest-luminosity FRB host to date ($\lesssim10^8L_{\odot}$), even less luminous than the dwarf host of FRB 20121102A. We investigate how localization precision and the depth of optical imaging affect host association, and discuss the implications of such a low-luminosity dwarf galaxy. Unlike the other repeaters with low-luminosity hosts, FRB 20190208A has a modest Faraday rotation measure of a few tens of rad m$^{-2}$, and EVN plus VLA observations reveal no associated compact persistent radio source. We also monitored FRB 20190208A for 40.4 hours over 2 years as part of the ÉCLAT repeating FRB monitoring campaign on the Nançay Radio Telescope, and detected one burst. Our results demonstrate that, in some cases, the robust association of an FRB with a host galaxy will require both high localization precision, as well as deep optical follow-up. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_17044 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A Repeating Fast Radio Burst Source in a Low-Luminosity Dwarf Galaxy Hewitt, Danté M. Bhardwaj, Mohit Gordon, Alexa C. Kirichenko, Aida Nimmo, Kenzie Bhandari, Shivani Cognard, Ismaël Fong, Wen-fai de Paz, Armando Gil Gopinath, Akshatha Hessels, Jason W. T. Kirsten, Franz Marcote, Benito Bezrukovs, Vladislavs Blaauw, Richard Bray, Justin D. Buttaccio, Salvatore Cassanelli, Tomas Chawla, Pragya Corongiu, Alessandro Deng, William Didehbani, Hannah N. Dong, Yuxin Gawroński, Marcin P. Giroletti, Marcello Guillemot, Lucas Huang, Jeff Joseph, Ronniy C. Kaspi, Victoria M. Lazda, Mattias Lindqvist, Michael Giuseppe, Maccaferri Mas-Ribas, Lluis Masui, Kiyoshi W. Mckinven, Ryan Michilli, Daniele Nugent, Anya E. Ould-Boukattine, Omar S. Paragi, Zsolt Pearlman, Aaron B. Pen, Ue-Li Pleunis, Ziggy Sand, Ketan R. Shah, Vishwangi Shin, Kaitlyn Snelders, Mark P. Venturi, Tiziana Wang, Na Williams-Baldwin, David R. A. Yang, Jun Yuan, Jianping P. High Energy Astrophysical Phenomena Astrophysics of Galaxies We present the localization and host galaxy of FRB 20190208A, a repeating source of fast radio bursts (FRBs) discovered using CHIME/FRB. As part of the PRECISE repeater localization program on the EVN, we monitored FRB 20190208A for 65.6 hours at $\sim1.4$ GHz and detected a single burst, which led to its VLBI localization with 260 mas uncertainty (2$σ$). Follow-up optical observations with the MMT Observatory ($i\gtrsim 25.7$ mag (AB)) found no visible host at the FRB position. Subsequent deeper observations with the GTC, however, revealed an extremely faint galaxy ($r=27.32 \pm0.16$ mag), very likely ($99.95 \%$) associated with FRB 20190208A. Given the dispersion measure of the FRB ($\sim580$ pc cm$^{-3}$), even the most conservative redshift estimate ($z_{\mathrm{max}}\sim0.83$) implies that this is the lowest-luminosity FRB host to date ($\lesssim10^8L_{\odot}$), even less luminous than the dwarf host of FRB 20121102A. We investigate how localization precision and the depth of optical imaging affect host association, and discuss the implications of such a low-luminosity dwarf galaxy. Unlike the other repeaters with low-luminosity hosts, FRB 20190208A has a modest Faraday rotation measure of a few tens of rad m$^{-2}$, and EVN plus VLA observations reveal no associated compact persistent radio source. We also monitored FRB 20190208A for 40.4 hours over 2 years as part of the ÉCLAT repeating FRB monitoring campaign on the Nançay Radio Telescope, and detected one burst. Our results demonstrate that, in some cases, the robust association of an FRB with a host galaxy will require both high localization precision, as well as deep optical follow-up. |
| title | A Repeating Fast Radio Burst Source in a Low-Luminosity Dwarf Galaxy |
| topic | High Energy Astrophysical Phenomena Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2410.17044 |