The Use of Binary Black Holes Merging in Active Galactic Nuclei Disks for Hubble Constant Measurements
We study the impact of environmental effects on the measurement of the Hubble constant ( H _0 ) from gravitational-wave (GW) observations of binary black hole mergers residing in active galactic nuclei (AGNs) near the central supermassive black hole. Using the potential hierarchical triple merger ca...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
|
| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/adda46 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849470013622190080 |
|---|---|
| author | Guo-Peng Li Xi-Long Fan |
| author_facet | Guo-Peng Li Xi-Long Fan |
| author_sort | Guo-Peng Li |
| collection | DOAJ |
| description | We study the impact of environmental effects on the measurement of the Hubble constant ( H _0 ) from gravitational-wave (GW) observations of binary black hole mergers residing in active galactic nuclei (AGNs) near the central supermassive black hole. Using the potential hierarchical triple merger candidate GW190514–GW190521 in AGN J124942.3+344929 with its potential electromagnetic counterpart ZTF19abanrhr as a multimessenger case study, we demonstrate that environmental effects can be negligible for mergers at approximately tens to hundreds of Schwarzschild radii from the supermassive black hole. We find ${H}_{0}=40.{9}_{-8.9}^{+19.3}\,{\rm{km}}\,{{\rm{s}}}^{-1}\,{{\rm{Mpc}}}^{-1}$ (median and 68% credible interval) under a flat prior and flat ΛCDM cosmology. Incorporating GW170817 prior information improves constraints to ${H}_{0}=68.{8}_{-6.0}^{+7.7}\,{\rm{km}}\,{{\rm{s}}}^{-1}\,{{\rm{Mpc}}}^{-1}$ . We suggest that, in general, AGN environments could serve as viable laboratories for cosmological studies from GW observations where environmental effects remain below detection thresholds. |
| format | Article |
| id | doaj-art-5fc457ec7f6b47999108e1459ccf8ad6 |
| institution | Kabale University |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-5fc457ec7f6b47999108e1459ccf8ad62025-08-20T03:25:16ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-0198616110.3847/1538-4357/adda46The Use of Binary Black Holes Merging in Active Galactic Nuclei Disks for Hubble Constant MeasurementsGuo-Peng Li0https://orcid.org/0000-0003-3306-5217Xi-Long Fan1https://orcid.org/0000-0002-8174-0128Department of Astronomy, School of Physics and Technology, Wuhan University , Wuhan 430072, People’s Republic of China ; xilong.fan@whu.edu.cnDepartment of Astronomy, School of Physics and Technology, Wuhan University , Wuhan 430072, People’s Republic of China ; xilong.fan@whu.edu.cnWe study the impact of environmental effects on the measurement of the Hubble constant ( H _0 ) from gravitational-wave (GW) observations of binary black hole mergers residing in active galactic nuclei (AGNs) near the central supermassive black hole. Using the potential hierarchical triple merger candidate GW190514–GW190521 in AGN J124942.3+344929 with its potential electromagnetic counterpart ZTF19abanrhr as a multimessenger case study, we demonstrate that environmental effects can be negligible for mergers at approximately tens to hundreds of Schwarzschild radii from the supermassive black hole. We find ${H}_{0}=40.{9}_{-8.9}^{+19.3}\,{\rm{km}}\,{{\rm{s}}}^{-1}\,{{\rm{Mpc}}}^{-1}$ (median and 68% credible interval) under a flat prior and flat ΛCDM cosmology. Incorporating GW170817 prior information improves constraints to ${H}_{0}=68.{8}_{-6.0}^{+7.7}\,{\rm{km}}\,{{\rm{s}}}^{-1}\,{{\rm{Mpc}}}^{-1}$ . We suggest that, in general, AGN environments could serve as viable laboratories for cosmological studies from GW observations where environmental effects remain below detection thresholds.https://doi.org/10.3847/1538-4357/adda46Gravitational wave sourcesHubble constantActive galactic nuclei |
| spellingShingle | Guo-Peng Li Xi-Long Fan The Use of Binary Black Holes Merging in Active Galactic Nuclei Disks for Hubble Constant Measurements The Astrophysical Journal Gravitational wave sources Hubble constant Active galactic nuclei |
| title | The Use of Binary Black Holes Merging in Active Galactic Nuclei Disks for Hubble Constant Measurements |
| title_full | The Use of Binary Black Holes Merging in Active Galactic Nuclei Disks for Hubble Constant Measurements |
| title_fullStr | The Use of Binary Black Holes Merging in Active Galactic Nuclei Disks for Hubble Constant Measurements |
| title_full_unstemmed | The Use of Binary Black Holes Merging in Active Galactic Nuclei Disks for Hubble Constant Measurements |
| title_short | The Use of Binary Black Holes Merging in Active Galactic Nuclei Disks for Hubble Constant Measurements |
| title_sort | use of binary black holes merging in active galactic nuclei disks for hubble constant measurements |
| topic | Gravitational wave sources Hubble constant Active galactic nuclei |
| url | https://doi.org/10.3847/1538-4357/adda46 |
| work_keys_str_mv | AT guopengli theuseofbinaryblackholesmerginginactivegalacticnucleidisksforhubbleconstantmeasurements AT xilongfan theuseofbinaryblackholesmerginginactivegalacticnucleidisksforhubbleconstantmeasurements AT guopengli useofbinaryblackholesmerginginactivegalacticnucleidisksforhubbleconstantmeasurements AT xilongfan useofbinaryblackholesmerginginactivegalacticnucleidisksforhubbleconstantmeasurements |