FRB event rate counts - II. Fluence, redshift, and dispersion measure distributions
We examine how the various observable statistical properties of the fast radio burst (FRB) population relate back to their fundamental physical properties in amodel-independent manner. We analyse the flux density and fluence distributions of FRBs as a tool to investigate their luminosity distance di...
| Main Authors: | , |
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| Format: | Journal Article |
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Oxford University Press
2018
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| Online Access: | http://purl.org/au-research/grants/arc/DP180100857 http://hdl.handle.net/20.500.11937/73290 |
| _version_ | 1848762975088803840 |
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| author | Macquart, Jean-Pierre Ekers, Ronald |
| author_facet | Macquart, Jean-Pierre Ekers, Ronald |
| author_sort | Macquart, Jean-Pierre |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We examine how the various observable statistical properties of the fast radio burst (FRB) population relate back to their fundamental physical properties in amodel-independent manner. We analyse the flux density and fluence distributions of FRBs as a tool to investigate their luminosity distance distribution and the evolution of their prevalence throughout cosmic history. We examine in detail particular scenarios in which the burst population follows some power of the cosmic star formation rate. FRBs present an important additional measurable over source counts of existing cosmological populations, namely the dispersion measure. Based on the known redshift of FRB121102 (the repeater) we expect at least 50 per cent of the dispersion measure to be attributable to the intergalactic medium and hence it can be used as a proxy for distance. We develop the framework to interpret the dispersion measure distribution, and investigate how the effect of Helium reionization in the intergalactic medium is evident in this distribution. Examination of existing data suggests that the FRB luminosity function is flatter than a critical slope, making FRBs easily detectable to large distances; in this regime the reduction in flux density with distance is outweighed by the increase in the number of bright bursts within the search volume. |
| first_indexed | 2025-11-14T10:56:06Z |
| format | Journal Article |
| id | curtin-20.500.11937-73290 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:56:06Z |
| publishDate | 2018 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-732902022-10-27T07:26:02Z FRB event rate counts - II. Fluence, redshift, and dispersion measure distributions Macquart, Jean-Pierre Ekers, Ronald We examine how the various observable statistical properties of the fast radio burst (FRB) population relate back to their fundamental physical properties in amodel-independent manner. We analyse the flux density and fluence distributions of FRBs as a tool to investigate their luminosity distance distribution and the evolution of their prevalence throughout cosmic history. We examine in detail particular scenarios in which the burst population follows some power of the cosmic star formation rate. FRBs present an important additional measurable over source counts of existing cosmological populations, namely the dispersion measure. Based on the known redshift of FRB121102 (the repeater) we expect at least 50 per cent of the dispersion measure to be attributable to the intergalactic medium and hence it can be used as a proxy for distance. We develop the framework to interpret the dispersion measure distribution, and investigate how the effect of Helium reionization in the intergalactic medium is evident in this distribution. Examination of existing data suggests that the FRB luminosity function is flatter than a critical slope, making FRBs easily detectable to large distances; in this regime the reduction in flux density with distance is outweighed by the increase in the number of bright bursts within the search volume. 2018 Journal Article http://hdl.handle.net/20.500.11937/73290 10.1093/MNRAS/STY2083 http://purl.org/au-research/grants/arc/DP180100857 Oxford University Press fulltext |
| spellingShingle | Macquart, Jean-Pierre Ekers, Ronald FRB event rate counts - II. Fluence, redshift, and dispersion measure distributions |
| title | FRB event rate counts - II. Fluence, redshift, and dispersion measure distributions |
| title_full | FRB event rate counts - II. Fluence, redshift, and dispersion measure distributions |
| title_fullStr | FRB event rate counts - II. Fluence, redshift, and dispersion measure distributions |
| title_full_unstemmed | FRB event rate counts - II. Fluence, redshift, and dispersion measure distributions |
| title_short | FRB event rate counts - II. Fluence, redshift, and dispersion measure distributions |
| title_sort | frb event rate counts - ii. fluence, redshift, and dispersion measure distributions |
| url | http://purl.org/au-research/grants/arc/DP180100857 http://hdl.handle.net/20.500.11937/73290 |