Comparison of the Parkes and FAST FRB DM distribution
We model the fast radio burst (FRB) dispersion measure (DM) distribution for the Five-hundred-meter Aperture Spherical Telescope (FAST) and compare this with the four FRBs published in the literature to date. We compare the DM distribution of Parkes and FAST, taking advantage of the similarity betwe...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
OXFORD UNIV PRESS
2022
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| Subjects: | |
| Online Access: | http://purl.org/au-research/grants/arc/DP210102103 http://hdl.handle.net/20.500.11937/91563 |
| _version_ | 1848765548711641088 |
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| author | Arcus, W.R. James, Clancy Ekers, Ronald Wayth, Randall |
| author_facet | Arcus, W.R. James, Clancy Ekers, Ronald Wayth, Randall |
| author_sort | Arcus, W.R. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We model the fast radio burst (FRB) dispersion measure (DM) distribution for the Five-hundred-meter Aperture Spherical Telescope (FAST) and compare this with the four FRBs published in the literature to date. We compare the DM distribution of Parkes and FAST, taking advantage of the similarity between their multibeam receivers. Notwithstanding the limited sample size, we observe a paucity of events at low DM for all evolutionary models considered, resulting in a sharp rise in the observed cumulative distribution function in the region of 1000 pc cm-3 ≲ DM ≲2000 pc cm-3. These traits could be due to statistical fluctuations (0.12 ≤ p ≤ 0.22), a complicated energy distribution or break in an energy distribution power law, spatial clustering, observational bias, or outliers in the sample (e.g. an excessive DMHost as recently found for FRB 20190520B). The energy distribution in this regime is unlikely to be adequately constrained until further events are detected. Modelling suggests that FAST may be well placed to discriminate between redshift evolutionary models and to probe the helium ionization signal of the intergalactic medium. |
| first_indexed | 2025-11-14T11:37:00Z |
| format | Journal Article |
| id | curtin-20.500.11937-91563 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:37:00Z |
| publishDate | 2022 |
| publisher | OXFORD UNIV PRESS |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-915632023-05-16T02:23:43Z Comparison of the Parkes and FAST FRB DM distribution Arcus, W.R. James, Clancy Ekers, Ronald Wayth, Randall Science & Technology Physical Sciences Astronomy & Astrophysics radio continuum: transients methods: data analysis surveys cosmology: miscellaneous transients: fast radio bursts EVENT RATE COUNTS DISPERSION MEASURE RADIO astro-ph.HE astro-ph.HE astro-ph.CO We model the fast radio burst (FRB) dispersion measure (DM) distribution for the Five-hundred-meter Aperture Spherical Telescope (FAST) and compare this with the four FRBs published in the literature to date. We compare the DM distribution of Parkes and FAST, taking advantage of the similarity between their multibeam receivers. Notwithstanding the limited sample size, we observe a paucity of events at low DM for all evolutionary models considered, resulting in a sharp rise in the observed cumulative distribution function in the region of 1000 pc cm-3 ≲ DM ≲2000 pc cm-3. These traits could be due to statistical fluctuations (0.12 ≤ p ≤ 0.22), a complicated energy distribution or break in an energy distribution power law, spatial clustering, observational bias, or outliers in the sample (e.g. an excessive DMHost as recently found for FRB 20190520B). The energy distribution in this regime is unlikely to be adequately constrained until further events are detected. Modelling suggests that FAST may be well placed to discriminate between redshift evolutionary models and to probe the helium ionization signal of the intergalactic medium. 2022 Journal Article http://hdl.handle.net/20.500.11937/91563 10.1093/mnras/stac626 English http://purl.org/au-research/grants/arc/DP210102103 OXFORD UNIV PRESS fulltext |
| spellingShingle | Science & Technology Physical Sciences Astronomy & Astrophysics radio continuum: transients methods: data analysis surveys cosmology: miscellaneous transients: fast radio bursts EVENT RATE COUNTS DISPERSION MEASURE RADIO astro-ph.HE astro-ph.HE astro-ph.CO Arcus, W.R. James, Clancy Ekers, Ronald Wayth, Randall Comparison of the Parkes and FAST FRB DM distribution |
| title | Comparison of the Parkes and FAST FRB DM distribution |
| title_full | Comparison of the Parkes and FAST FRB DM distribution |
| title_fullStr | Comparison of the Parkes and FAST FRB DM distribution |
| title_full_unstemmed | Comparison of the Parkes and FAST FRB DM distribution |
| title_short | Comparison of the Parkes and FAST FRB DM distribution |
| title_sort | comparison of the parkes and fast frb dm distribution |
| topic | Science & Technology Physical Sciences Astronomy & Astrophysics radio continuum: transients methods: data analysis surveys cosmology: miscellaneous transients: fast radio bursts EVENT RATE COUNTS DISPERSION MEASURE RADIO astro-ph.HE astro-ph.HE astro-ph.CO |
| url | http://purl.org/au-research/grants/arc/DP210102103 http://hdl.handle.net/20.500.11937/91563 |