The Dispersion of Fast Radio Bursts from a Structured Intergalactic Medium at Redshifts z < 1.5
We analyze the sources of free electrons that produce the large dispersion measures, (in units of cm−3 pc), observed toward fast radio bursts (FRBs). Individual galaxies typically produce from ionized gas in their disk, disk-halo interface, and circumgalactic medium. Toward an FRB source at redshift...
Gespeichert in:
| Veröffentlicht in: | Astrophysical journal. Letters 2018-01, Vol.852 (1), p.L11 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | 1 |
| container_start_page | L11 |
| container_title | Astrophysical journal. Letters |
| container_volume | 852 |
| creator | Shull, J. Michael Danforth, Charles W. |
| description | We analyze the sources of free electrons that produce the large dispersion measures, (in units of cm−3 pc), observed toward fast radio bursts (FRBs). Individual galaxies typically produce from ionized gas in their disk, disk-halo interface, and circumgalactic medium. Toward an FRB source at redshift z, a homogeneous intergalactic medium (IGM) containing a fraction of cosmological baryons will produce , where . A structured IGM of photoionized Ly absorbers in the cosmic web produces similar dispersion, modeled from the observed distribution, , of H i (Ly -forest) absorbers in column density and redshift with ionization corrections and scaling relations from cosmological simulations. An analytic formula for DM(z) applied to observed FRB dispersions suggests that for an IGM containing a significant baryon fraction, . Future surveys of the statistical distribution, DM( , of FRBs identified with specific galaxies and redshifts can be used to calibrate the IGM baryon fraction and distribution of Ly absorbers. Fluctuations in DM at the level 10 cm−3 pc will arise from filaments and voids in the cosmic web. |
| doi_str_mv | 10.3847/2041-8213/aaa2fa |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_O3W</sourceid><recordid>TN_cdi_proquest_journals_2365661132</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2365661132</sourcerecordid><originalsourceid>FETCH-LOGICAL-c447t-b2a60ce2bf0b546bdc2929580f31cf2ad7dea8cb020b4fde24e0a8b1c810fe183</originalsourceid><addsrcrecordid>eNp1kEtLAzEURoMoWKt7lwHBldMmmUdTcKPVaqEiaF2HO3nYlLYZk8xCf70pI3Wjq1zCOd-9fAidUzLIeTEaMlLQjDOaDwGAGThAvf3X4X4m5TE6CWFFCCMV5T0kFkuN72xotA_WbbEzeAoh4hdQ1uHb1ocYsPFugwG_Rt_K2Hqt8GwbtX-HNchoJX7SyraJSJpWYWlNcr7wNaaD8hQdGVgHffbz9tHb9H4xeczmzw-zyc08k0UxilnNoCJSs9qQuiyqWkk2ZuOSE5NTaRiokdLAZZ3OrgujNCs0AV5TySkxmvK8jy663Ma7j1aHKFau9du0UrC8KquK0pwlinSU9C4Er41ovN2A_xSUiF2NYteT2HUmuhqTctkp1jW_mdCs1oKXTFAxp1Q0yiTw6g_w39xv65qBNQ</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2365661132</pqid></control><display><type>article</type><title>The Dispersion of Fast Radio Bursts from a Structured Intergalactic Medium at Redshifts z < 1.5</title><source>IOP Journals (Institute Of Physics)</source><creator>Shull, J. Michael ; Danforth, Charles W.</creator><creatorcontrib>Shull, J. Michael ; Danforth, Charles W.</creatorcontrib><description>We analyze the sources of free electrons that produce the large dispersion measures, (in units of cm−3 pc), observed toward fast radio bursts (FRBs). Individual galaxies typically produce from ionized gas in their disk, disk-halo interface, and circumgalactic medium. Toward an FRB source at redshift z, a homogeneous intergalactic medium (IGM) containing a fraction of cosmological baryons will produce , where . A structured IGM of photoionized Ly absorbers in the cosmic web produces similar dispersion, modeled from the observed distribution, , of H i (Ly -forest) absorbers in column density and redshift with ionization corrections and scaling relations from cosmological simulations. An analytic formula for DM(z) applied to observed FRB dispersions suggests that for an IGM containing a significant baryon fraction, . Future surveys of the statistical distribution, DM( , of FRBs identified with specific galaxies and redshifts can be used to calibrate the IGM baryon fraction and distribution of Ly absorbers. Fluctuations in DM at the level 10 cm−3 pc will arise from filaments and voids in the cosmic web.</description><identifier>ISSN: 2041-8205</identifier><identifier>EISSN: 2041-8213</identifier><identifier>DOI: 10.3847/2041-8213/aaa2fa</identifier><language>eng</language><publisher>Austin: The American Astronomical Society</publisher><subject>Absorbers ; Baryons ; Computer simulation ; cosmological parameters ; cosmology: observations ; Dispersion ; Filaments ; Free electrons ; Galaxies ; Galaxy distribution ; Intergalactic media ; intergalactic medium ; Ionization ; Photoionization ; Radio bursts ; Red shift ; ultraviolet: galaxies ; Variation ; Webs</subject><ispartof>Astrophysical journal. Letters, 2018-01, Vol.852 (1), p.L11</ispartof><rights>2018. The American Astronomical Society. All rights reserved.</rights><rights>Copyright IOP Publishing Jan 01, 2018</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c447t-b2a60ce2bf0b546bdc2929580f31cf2ad7dea8cb020b4fde24e0a8b1c810fe183</citedby><cites>FETCH-LOGICAL-c447t-b2a60ce2bf0b546bdc2929580f31cf2ad7dea8cb020b4fde24e0a8b1c810fe183</cites><orcidid>0000-0002-4594-9936</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.3847/2041-8213/aaa2fa/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>314,777,781,27905,27906,38849,38871,53821,53848</link.rule.ids><linktorsrc>$$Uhttps://iopscience.iop.org/article/10.3847/2041-8213/aaa2fa$$EView_record_in_IOP_Publishing$$FView_record_in_$$GIOP_Publishing</linktorsrc></links><search><creatorcontrib>Shull, J. Michael</creatorcontrib><creatorcontrib>Danforth, Charles W.</creatorcontrib><title>The Dispersion of Fast Radio Bursts from a Structured Intergalactic Medium at Redshifts z < 1.5</title><title>Astrophysical journal. Letters</title><addtitle>APJL</addtitle><addtitle>Astrophys. J. Lett</addtitle><description>We analyze the sources of free electrons that produce the large dispersion measures, (in units of cm−3 pc), observed toward fast radio bursts (FRBs). Individual galaxies typically produce from ionized gas in their disk, disk-halo interface, and circumgalactic medium. Toward an FRB source at redshift z, a homogeneous intergalactic medium (IGM) containing a fraction of cosmological baryons will produce , where . A structured IGM of photoionized Ly absorbers in the cosmic web produces similar dispersion, modeled from the observed distribution, , of H i (Ly -forest) absorbers in column density and redshift with ionization corrections and scaling relations from cosmological simulations. An analytic formula for DM(z) applied to observed FRB dispersions suggests that for an IGM containing a significant baryon fraction, . Future surveys of the statistical distribution, DM( , of FRBs identified with specific galaxies and redshifts can be used to calibrate the IGM baryon fraction and distribution of Ly absorbers. Fluctuations in DM at the level 10 cm−3 pc will arise from filaments and voids in the cosmic web.</description><subject>Absorbers</subject><subject>Baryons</subject><subject>Computer simulation</subject><subject>cosmological parameters</subject><subject>cosmology: observations</subject><subject>Dispersion</subject><subject>Filaments</subject><subject>Free electrons</subject><subject>Galaxies</subject><subject>Galaxy distribution</subject><subject>Intergalactic media</subject><subject>intergalactic medium</subject><subject>Ionization</subject><subject>Photoionization</subject><subject>Radio bursts</subject><subject>Red shift</subject><subject>ultraviolet: galaxies</subject><subject>Variation</subject><subject>Webs</subject><issn>2041-8205</issn><issn>2041-8213</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp1kEtLAzEURoMoWKt7lwHBldMmmUdTcKPVaqEiaF2HO3nYlLYZk8xCf70pI3Wjq1zCOd-9fAidUzLIeTEaMlLQjDOaDwGAGThAvf3X4X4m5TE6CWFFCCMV5T0kFkuN72xotA_WbbEzeAoh4hdQ1uHb1ocYsPFugwG_Rt_K2Hqt8GwbtX-HNchoJX7SyraJSJpWYWlNcr7wNaaD8hQdGVgHffbz9tHb9H4xeczmzw-zyc08k0UxilnNoCJSs9qQuiyqWkk2ZuOSE5NTaRiokdLAZZ3OrgujNCs0AV5TySkxmvK8jy663Ma7j1aHKFau9du0UrC8KquK0pwlinSU9C4Er41ovN2A_xSUiF2NYteT2HUmuhqTctkp1jW_mdCs1oKXTFAxp1Q0yiTw6g_w39xv65qBNQ</recordid><startdate>20180101</startdate><enddate>20180101</enddate><creator>Shull, J. Michael</creator><creator>Danforth, Charles W.</creator><general>The American Astronomical Society</general><general>IOP Publishing</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>8FD</scope><scope>H8D</scope><scope>KL.</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-4594-9936</orcidid></search><sort><creationdate>20180101</creationdate><title>The Dispersion of Fast Radio Bursts from a Structured Intergalactic Medium at Redshifts z < 1.5</title><author>Shull, J. Michael ; Danforth, Charles W.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c447t-b2a60ce2bf0b546bdc2929580f31cf2ad7dea8cb020b4fde24e0a8b1c810fe183</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Absorbers</topic><topic>Baryons</topic><topic>Computer simulation</topic><topic>cosmological parameters</topic><topic>cosmology: observations</topic><topic>Dispersion</topic><topic>Filaments</topic><topic>Free electrons</topic><topic>Galaxies</topic><topic>Galaxy distribution</topic><topic>Intergalactic media</topic><topic>intergalactic medium</topic><topic>Ionization</topic><topic>Photoionization</topic><topic>Radio bursts</topic><topic>Red shift</topic><topic>ultraviolet: galaxies</topic><topic>Variation</topic><topic>Webs</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Shull, J. Michael</creatorcontrib><creatorcontrib>Danforth, Charles W.</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Astrophysical journal. Letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Shull, J. Michael</au><au>Danforth, Charles W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Dispersion of Fast Radio Bursts from a Structured Intergalactic Medium at Redshifts z < 1.5</atitle><jtitle>Astrophysical journal. Letters</jtitle><stitle>APJL</stitle><addtitle>Astrophys. J. Lett</addtitle><date>2018-01-01</date><risdate>2018</risdate><volume>852</volume><issue>1</issue><spage>L11</spage><pages>L11-</pages><issn>2041-8205</issn><eissn>2041-8213</eissn><abstract>We analyze the sources of free electrons that produce the large dispersion measures, (in units of cm−3 pc), observed toward fast radio bursts (FRBs). Individual galaxies typically produce from ionized gas in their disk, disk-halo interface, and circumgalactic medium. Toward an FRB source at redshift z, a homogeneous intergalactic medium (IGM) containing a fraction of cosmological baryons will produce , where . A structured IGM of photoionized Ly absorbers in the cosmic web produces similar dispersion, modeled from the observed distribution, , of H i (Ly -forest) absorbers in column density and redshift with ionization corrections and scaling relations from cosmological simulations. An analytic formula for DM(z) applied to observed FRB dispersions suggests that for an IGM containing a significant baryon fraction, . Future surveys of the statistical distribution, DM( , of FRBs identified with specific galaxies and redshifts can be used to calibrate the IGM baryon fraction and distribution of Ly absorbers. Fluctuations in DM at the level 10 cm−3 pc will arise from filaments and voids in the cosmic web.</abstract><cop>Austin</cop><pub>The American Astronomical Society</pub><doi>10.3847/2041-8213/aaa2fa</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0002-4594-9936</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | ISSN: 2041-8205 |
| ispartof | Astrophysical journal. Letters, 2018-01, Vol.852 (1), p.L11 |
| issn | 2041-8205 2041-8213 |
| language | eng |
| recordid | cdi_proquest_journals_2365661132 |
| source | IOP Journals (Institute Of Physics) |
| subjects | Absorbers Baryons Computer simulation cosmological parameters cosmology: observations Dispersion Filaments Free electrons Galaxies Galaxy distribution Intergalactic media intergalactic medium Ionization Photoionization Radio bursts Red shift ultraviolet: galaxies Variation Webs |
| title | The Dispersion of Fast Radio Bursts from a Structured Intergalactic Medium at Redshifts z < 1.5 |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-17T14%3A20%3A04IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_O3W&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=The%20Dispersion%20of%20Fast%20Radio%20Bursts%20from%20a%20Structured%20Intergalactic%20Medium%20at%20Redshifts%20z%20%3C%201.5&rft.jtitle=Astrophysical%20journal.%20Letters&rft.au=Shull,%20J.%20Michael&rft.date=2018-01-01&rft.volume=852&rft.issue=1&rft.spage=L11&rft.pages=L11-&rft.issn=2041-8205&rft.eissn=2041-8213&rft_id=info:doi/10.3847/2041-8213/aaa2fa&rft_dat=%3Cproquest_O3W%3E2365661132%3C/proquest_O3W%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2365661132&rft_id=info:pmid/&rfr_iscdi=true |