A study of two FRBs with low polarization fractions localized with the MeerTRAP transient buffer system
Localization of fast radio bursts (FRBs) to arcsecond and subarcsecond precision maximizes their potential as cosmological probes. To that end, FRB detection instruments are deploying triggered complex-voltage capture systems to localize FRBs, identify their host galaxy, and measure a redshift. Here...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
August 2024
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| In: |
Monthly notices of the Royal Astronomical Society
Year: 2024, Jahrgang: 532, Heft: 4, Pages: 3881-3892 |
| ISSN: | 1365-2966 |
| DOI: | 10.1093/mnras/stae1652 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1093/mnras/stae1652
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| Verfasserangaben: | K.M. Rajwade, L.N. Driessen, E.D. Barr, I. Pastor-Marazuela, M. Berezina, F. Jankowski, A. Muller, L. Kahinga, B.W. Stappers, M.C. Bezuidenhout, M. Caleb, A. Deller, W. Fong, A. Gordon, M. Kramer, M. Malenta, V. Morello, J.X. Prochaska, S. Sanidas, M. Surnis, N .Tejos and S. Wagner |
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| 100 | 1 | |a Rajwade, Kaustubh M. |e VerfasserIn |0 (DE-588)1378268318 |0 (DE-627)1937730352 |4 aut | |
| 245 | 1 | 2 | |a A study of two FRBs with low polarization fractions localized with the MeerTRAP transient buffer system |c K.M. Rajwade, L.N. Driessen, E.D. Barr, I. Pastor-Marazuela, M. Berezina, F. Jankowski, A. Muller, L. Kahinga, B.W. Stappers, M.C. Bezuidenhout, M. Caleb, A. Deller, W. Fong, A. Gordon, M. Kramer, M. Malenta, V. Morello, J.X. Prochaska, S. Sanidas, M. Surnis, N .Tejos and S. Wagner |
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| 520 | |a Localization of fast radio bursts (FRBs) to arcsecond and subarcsecond precision maximizes their potential as cosmological probes. To that end, FRB detection instruments are deploying triggered complex-voltage capture systems to localize FRBs, identify their host galaxy, and measure a redshift. Here, we report the discovery and localization of two FRBs (20220717A and 20220905A) that were captured by the transient buffer system deployed by the MeerTRAP instrument at the MeerKAT telescope in South Africa. We were able to localize the FRBs to precision of $\si |1 arcsecond that allowed us to unambiguously identify the host galaxy for FRB 20220717A (posterior probability $\sim$0.97). FRB 20220905A lies in a crowded region of the sky with a tentative identification of a host galaxy but the faintness and the difficulty in obtaining an optical spectrum preclude a conclusive association. The bursts show low linear polarization fractions (10-17 per cent) that conform to the large diversity in the polarization fraction observed in apparently non-repeating FRBs akin to single pulses from neutron stars. We also show that the host galaxy of FRB 20220717A contributes roughly 15 per cent of the total dispersion measure (DM), indicating that it is located in a plasma-rich part of the host galaxy which can explain the large rotation measure. The scattering in FRB 20220717A can be mostly attributed to the host galaxy and the intervening medium and is consistent with what is seen in the wider FRB population. | ||
| 700 | 1 | |a Driessen, L. N. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Barr, E. D. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Pastor-Marazuela, I. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Berezina, Marina |e VerfasserIn |0 (DE-588)1206649909 |0 (DE-627)1692874195 |4 aut | |
| 700 | 1 | |a Jankowski, F. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Muller, A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Kahinga, L. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Stappers, B. W. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Bezuidenhout, M. C. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Caleb, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Deller, A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Fong, W. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Gordon, A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Kramer, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Malenta, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Morello, V. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Prochaska, J. X. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Sanidas, S. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Surnis, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Tejos, N. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Wagner, Stefan |e VerfasserIn |0 (DE-588)1034487728 |0 (DE-627)745635997 |0 (DE-576)38209123X |4 aut | |
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