Redshift dependence of FRB host dispersion measures across cosmic epochs

Sandeep Kumar Acharya, Paz Beniamini

Research output: Contribution to journalArticlepeer-review

Abstract

We constrain the redshift dependence of (rest frame) host galaxy dispersion measures of localized Fast Radio Bursts (FRBs) by assuming it to vary as a simple power law (∝ (1+z)α ). We simultaneously fit α as well as the host dispersion measure to the data of FRBs with known redshifts. We find that α between 0 to 1 is preferred depending upon our modelling choices. Current data can constrain |α| ≲ 2 at a 68 percent confidence interval. Such constraints have implications for our understanding of galaxy formation and can be used to inform galaxy and large scale simulations.

Original languageEnglish
Article number036
JournalJournal of Cosmology and Astroparticle Physics
Volume2025
Issue number1
DOIs
StatePublished - 1 Jan 2025

Bibliographical note

Publisher Copyright:
© 2025 IOP Publishing Ltd and Sissa Medialab. All rights, including for text and data mining, AI training, and similar technologies, are reserved.

Keywords

  • cosmological simulations
  • galaxy evolution
  • hydrodynamical simulations

Fingerprint

Dive into the research topics of 'Redshift dependence of FRB host dispersion measures across cosmic epochs'. Together they form a unique fingerprint.

Cite this