GBT24B-291
Following up two new FRBs discovered in FAST-CRAFTS drift-scan survey
Abstract
This proposal suggests for observations of two FRBs, FRB 20211103A and FRB 20230104A, with the GBT's L-band receiver. These FRBs are two of the new discoveries detected from an analysis of ~1000 hrs of drift scan survey CRAFTS (The Commensal Radio Astronomy FAST Survey) data taken using the Five-hundred-meter Aperture Spherical radio Telescope (FAST).
Both FRBs are located with a positional uncertainty of 3 arc-minutes, and observed with a considerable high DM. Identifying FRB 20211103A or FRB 20230104A as repeaters would have significant implications for estimating the frequency of FRB burst events throughout the sky. It would also provide valuable insights for further research into the localization of FRBs and their counterparts, including: 1) Locating the host galaxy the host galaxy and verifying whether the H?? redshift measurements satisfy the Macquart relation; 2) Investigating the potential as sociation with a persistent radio source (PRS) resembling that of FRB 20121102A and FRB 20190520B. Moreover, the considerable value of tau_sc observed in FRB 20230104A indicates a substantial influence from propagation effects. This particular FRB presents an excellent opportunity to study its circumburst environment and the effects of propagation. If these FRBs are indeed repeaters, GBT can achieve additional localization information.
Investigators
| Name | Institution |
|---|---|
| Junshuo Zhang | National Astronomical Observatories, CAS |
| Jinhuang Cao * | National Astronomical Observatories, CAS |
| Chenhui Niu | National Astronomical Observatories, CAS |
| Wanjin Lu | National Astronomical Observatories, CAS |
| Yu-Hao Zhu | National Astronomical Observatories, CAS |
| Dengke Zhou | Zhejiang Lab |
| Chao-Wei Tsai | California at Los Angeles, University of; Jet Propulsion Laboratory ; California Institute of Technology; National Astronomical Observatories, CAS |
| Yongkun Zhang | National Astronomical Observatories, CAS |
| Yidan Wang | National Astronomical Observatories, CAS |
| Pei Wang | National Astronomical Observatories, CAS |
* indicates the PI