Mapping the Spatial Distribution of Fast Radio Bursts within their Host Galaxies
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arXiv
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| Natura: | Preprint |
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2025
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| author | Gordon, Alexa C. Fong, Wen-fai Deller, Adam T. Marnoch, Lachlan Lim, Sungsoon Peng, Eric W. Bannister, Keith W. Bera, Apurba Bhat, N. D. R. Dial, Tyson Dong, Yuxin Eftekhari, Tarraneh Glowacki, Marcin Gourdji, Kelly Gupta, Vivek Jahns-Schindler, Joscha N. Jaini, Akhil Kilpatrick, Charles D. Liu, Chang Prochaska, J. Xavier Ryder, Stuart D. Shannon, Ryan M. Simha, Sunil Tejos, Nicolas Wang, Yuanming Wang, Ziteng |
| author_facet | Gordon, Alexa C. Fong, Wen-fai Deller, Adam T. Marnoch, Lachlan Lim, Sungsoon Peng, Eric W. Bannister, Keith W. Bera, Apurba Bhat, N. D. R. Dial, Tyson Dong, Yuxin Eftekhari, Tarraneh Glowacki, Marcin Gourdji, Kelly Gupta, Vivek Jahns-Schindler, Joscha N. Jaini, Akhil Kilpatrick, Charles D. Liu, Chang Prochaska, J. Xavier Ryder, Stuart D. Shannon, Ryan M. Simha, Sunil Tejos, Nicolas Wang, Yuanming Wang, Ziteng |
| contents | We present deep optical and near-infrared observations of the host galaxies of 34 fast radio bursts (FRBs) detected by the Commensal Real-time ASKAP Fast Transient (CRAFT) survey on the Australian SKA Pathfinder (ASKAP) to compare the locations of FRBs relative to their host light distributions. Incorporating three additional FRBs from the literature, for a total of four repeating and 33 apparently non-repeating FRBs, we determine their projected galactocentric offsets and find a median of $ 4.2^{+5.7}_{-2.5}$ kpc ($1.0^{+1.5}_{-0.6}r_e$). We model their host surface brightness profiles and develop synthetic spatial distributions of their globular clusters based on host properties. We calculate the likelihood the observed location of each FRB is consistent with the smooth light of its host galaxy, residual (primarily spiral) substructure, or globular cluster distributions. The majority of FRBs favor locations within the disks of their galaxies, while only 11$\pm$5\% favor a globular cluster origin, primarily those with galactocentric offsets $\gtrsim3r_e$. At $z<0.15$, where spiral structure is apparent in 86\% of our sample of FRB hosts, we find $\approx 20-46\%$ of FRBs favor an association with spiral arms. Assuming FRBs derive from magnetars, our results support multiple formation channels with the majority of progenitors associated with massive stars and a minority formed through dynamical channels. However, the moderate fraction of FRBs associated with spiral structure indicates that high star formation efficiency of the youngest and most massive stars is not a predominant driver in the production of FRB progenitors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_06453 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Mapping the Spatial Distribution of Fast Radio Bursts within their Host Galaxies Gordon, Alexa C. Fong, Wen-fai Deller, Adam T. Marnoch, Lachlan Lim, Sungsoon Peng, Eric W. Bannister, Keith W. Bera, Apurba Bhat, N. D. R. Dial, Tyson Dong, Yuxin Eftekhari, Tarraneh Glowacki, Marcin Gourdji, Kelly Gupta, Vivek Jahns-Schindler, Joscha N. Jaini, Akhil Kilpatrick, Charles D. Liu, Chang Prochaska, J. Xavier Ryder, Stuart D. Shannon, Ryan M. Simha, Sunil Tejos, Nicolas Wang, Yuanming Wang, Ziteng Astrophysics of Galaxies We present deep optical and near-infrared observations of the host galaxies of 34 fast radio bursts (FRBs) detected by the Commensal Real-time ASKAP Fast Transient (CRAFT) survey on the Australian SKA Pathfinder (ASKAP) to compare the locations of FRBs relative to their host light distributions. Incorporating three additional FRBs from the literature, for a total of four repeating and 33 apparently non-repeating FRBs, we determine their projected galactocentric offsets and find a median of $ 4.2^{+5.7}_{-2.5}$ kpc ($1.0^{+1.5}_{-0.6}r_e$). We model their host surface brightness profiles and develop synthetic spatial distributions of their globular clusters based on host properties. We calculate the likelihood the observed location of each FRB is consistent with the smooth light of its host galaxy, residual (primarily spiral) substructure, or globular cluster distributions. The majority of FRBs favor locations within the disks of their galaxies, while only 11$\pm$5\% favor a globular cluster origin, primarily those with galactocentric offsets $\gtrsim3r_e$. At $z<0.15$, where spiral structure is apparent in 86\% of our sample of FRB hosts, we find $\approx 20-46\%$ of FRBs favor an association with spiral arms. Assuming FRBs derive from magnetars, our results support multiple formation channels with the majority of progenitors associated with massive stars and a minority formed through dynamical channels. However, the moderate fraction of FRBs associated with spiral structure indicates that high star formation efficiency of the youngest and most massive stars is not a predominant driver in the production of FRB progenitors. |
| title | Mapping the Spatial Distribution of Fast Radio Bursts within their Host Galaxies |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2506.06453 |