Baryons in the Cosmic Web of IllustrisTNG – I: gas in knots, filaments, sheets, and voids
© 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. We analyse the IllustrisTNG simulations to study the mass, volume fraction, and phase distribution of gaseous baryons embedded in the knots, filaments, sheets, and voids of the Cosmic Web from reds...
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Oxford University Press (OUP)
2021
|
| Online Access: | https://hdl.handle.net/1721.1/132588 |
| _version_ | 1826217848283856896 |
|---|---|
| author | Martizzi, Davide Vogelsberger, Mark Artale, Maria Celeste Haider, Markus Torrey, Paul Marinacci, Federico Nelson, Dylan Pillepich, Annalisa Weinberger, Rainer Hernquist, Lars Naiman, Jill Springel, Volker |
| author_facet | Martizzi, Davide Vogelsberger, Mark Artale, Maria Celeste Haider, Markus Torrey, Paul Marinacci, Federico Nelson, Dylan Pillepich, Annalisa Weinberger, Rainer Hernquist, Lars Naiman, Jill Springel, Volker |
| author_sort | Martizzi, Davide |
| collection | MIT |
| description | © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. We analyse the IllustrisTNG simulations to study the mass, volume fraction, and phase distribution of gaseous baryons embedded in the knots, filaments, sheets, and voids of the Cosmic Web from redshift z = 8 to redshift z = 0. We find that filaments host more star-forming gas than knots, and that filaments also have a higher relative mass fraction of gas in this phase than knots. We also show that the cool, diffuse intergalactic medium [IGM; $T\lt 105 \, {\rm K}$, $n-{\rm H}\lt 10{-4}(1+z) \, {\rm cm{-3}}$] and the warm-hot intergalactic medium [WHIM; $105 \lt T\lt 107 \, {\rm K}$, $n-{\rm H} \lt 10{-4}(1+z)\, {\rm cm{-3}}$] constitute ${\sim } 39$ and ${\sim } 46{{\ \rm per\ cent}}$ of the baryons at redshift z = 0, respectively. Our results indicate that the WHIM may constitute the largest reservoir of missing baryons at redshift z = 0. Using our Cosmic Web classification, we predict the WHIM to be the dominant baryon mass contribution in filaments and knots at redshift z = 0, but not in sheets and voids where the cool, diffuse IGM dominates. We also characterize the evolution of WHIM and IGM from redshift z = 4 to redshift z = 0, and find that the mass fraction of WHIM in filaments and knots evolves only by a factor of ∼2 from redshift z = 0 to 1, but declines faster at higher redshift. The WHIM only occupies $4\!-\!11{{\ \rm per\ cent}}$ of the volume at redshift 0 ≤ z ≤ 1. We predict the existence of a significant number of currently undetected O vii and Ne ix absorption systems in cosmic filaments, which could be detected by future X-ray telescopes like Athena. |
| first_indexed | 2024-09-23T17:10:08Z |
| format | Article |
| id | mit-1721.1/132588 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T17:10:08Z |
| publishDate | 2021 |
| publisher | Oxford University Press (OUP) |
| record_format | dspace |
| spelling | mit-1721.1/1325882021-09-21T03:01:39Z Baryons in the Cosmic Web of IllustrisTNG – I: gas in knots, filaments, sheets, and voids Martizzi, Davide Vogelsberger, Mark Artale, Maria Celeste Haider, Markus Torrey, Paul Marinacci, Federico Nelson, Dylan Pillepich, Annalisa Weinberger, Rainer Hernquist, Lars Naiman, Jill Springel, Volker © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. We analyse the IllustrisTNG simulations to study the mass, volume fraction, and phase distribution of gaseous baryons embedded in the knots, filaments, sheets, and voids of the Cosmic Web from redshift z = 8 to redshift z = 0. We find that filaments host more star-forming gas than knots, and that filaments also have a higher relative mass fraction of gas in this phase than knots. We also show that the cool, diffuse intergalactic medium [IGM; $T\lt 105 \, {\rm K}$, $n-{\rm H}\lt 10{-4}(1+z) \, {\rm cm{-3}}$] and the warm-hot intergalactic medium [WHIM; $105 \lt T\lt 107 \, {\rm K}$, $n-{\rm H} \lt 10{-4}(1+z)\, {\rm cm{-3}}$] constitute ${\sim } 39$ and ${\sim } 46{{\ \rm per\ cent}}$ of the baryons at redshift z = 0, respectively. Our results indicate that the WHIM may constitute the largest reservoir of missing baryons at redshift z = 0. Using our Cosmic Web classification, we predict the WHIM to be the dominant baryon mass contribution in filaments and knots at redshift z = 0, but not in sheets and voids where the cool, diffuse IGM dominates. We also characterize the evolution of WHIM and IGM from redshift z = 4 to redshift z = 0, and find that the mass fraction of WHIM in filaments and knots evolves only by a factor of ∼2 from redshift z = 0 to 1, but declines faster at higher redshift. The WHIM only occupies $4\!-\!11{{\ \rm per\ cent}}$ of the volume at redshift 0 ≤ z ≤ 1. We predict the existence of a significant number of currently undetected O vii and Ne ix absorption systems in cosmic filaments, which could be detected by future X-ray telescopes like Athena. 2021-09-20T18:23:12Z 2021-09-20T18:23:12Z 2020-11-12T18:13:21Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/132588 en 10.1093/MNRAS/STZ1106 Monthly Notices of the Royal Astronomical Society Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Oxford University Press (OUP) arXiv |
| spellingShingle | Martizzi, Davide Vogelsberger, Mark Artale, Maria Celeste Haider, Markus Torrey, Paul Marinacci, Federico Nelson, Dylan Pillepich, Annalisa Weinberger, Rainer Hernquist, Lars Naiman, Jill Springel, Volker Baryons in the Cosmic Web of IllustrisTNG – I: gas in knots, filaments, sheets, and voids |
| title | Baryons in the Cosmic Web of IllustrisTNG – I: gas in knots, filaments, sheets, and voids |
| title_full | Baryons in the Cosmic Web of IllustrisTNG – I: gas in knots, filaments, sheets, and voids |
| title_fullStr | Baryons in the Cosmic Web of IllustrisTNG – I: gas in knots, filaments, sheets, and voids |
| title_full_unstemmed | Baryons in the Cosmic Web of IllustrisTNG – I: gas in knots, filaments, sheets, and voids |
| title_short | Baryons in the Cosmic Web of IllustrisTNG – I: gas in knots, filaments, sheets, and voids |
| title_sort | baryons in the cosmic web of illustristng i gas in knots filaments sheets and voids |
| url | https://hdl.handle.net/1721.1/132588 |
| work_keys_str_mv | AT martizzidavide baryonsinthecosmicwebofillustristngigasinknotsfilamentssheetsandvoids AT vogelsbergermark baryonsinthecosmicwebofillustristngigasinknotsfilamentssheetsandvoids AT artalemariaceleste baryonsinthecosmicwebofillustristngigasinknotsfilamentssheetsandvoids AT haidermarkus baryonsinthecosmicwebofillustristngigasinknotsfilamentssheetsandvoids AT torreypaul baryonsinthecosmicwebofillustristngigasinknotsfilamentssheetsandvoids AT marinaccifederico baryonsinthecosmicwebofillustristngigasinknotsfilamentssheetsandvoids AT nelsondylan baryonsinthecosmicwebofillustristngigasinknotsfilamentssheetsandvoids AT pillepichannalisa baryonsinthecosmicwebofillustristngigasinknotsfilamentssheetsandvoids AT weinbergerrainer baryonsinthecosmicwebofillustristngigasinknotsfilamentssheetsandvoids AT hernquistlars baryonsinthecosmicwebofillustristngigasinknotsfilamentssheetsandvoids AT naimanjill baryonsinthecosmicwebofillustristngigasinknotsfilamentssheetsandvoids AT springelvolker baryonsinthecosmicwebofillustristngigasinknotsfilamentssheetsandvoids |