Skip to content
DraconiticResearch
Search Sources API
189,280 studies31 sourcesUpdated 38 min ago
Peer-reviewedCC BYJournal of Cosmology and Astroparticle Physics

Calibrating baryonic feedback with weak lensing and fast radio bursts

  • Robert Reischke1,2
  • Dennis Neumann3,2
  • Klara Bertmann2
  • Steffen Hagstotz4,5
  • Hendrik Hildebrandt2
5 affiliations
  1. 1Argelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, D-53121 Bonn,
  2. 2Ruhr University Bochum, Faculty of Physics and Astronomy, Astronomical Institute (AIRUB), German Centre for Cosmological Lensing, 44780 Bochum,
  3. 3Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden,
  4. 4Excellence Cluster ORIGINS, Boltzmannstraße 2, D-85748 Garching,
  5. 5Universitäts-Sternwarte, Fakultät für Physik, Ludwig-Maximilians Universität München, Scheinerstraße 1, D-81679 München,
Open at sourceDOICite

Abstract

One of the key limitations of large-scale structure surveys of the current and future generation, such as Euclid, LSST-Rubin or Roman, is the influence of feedback processes on the distribution of matter in the Universe. This effect, called baryonic feedback, modifies the matter power spectrum on non-linear scales much stronger than any cosmological parameter of interest. Constraining these modifications is therefore key to unlocking the full potential of the upcoming surveys, and we propose to do so with the help of Fast Radio Bursts (FRBs). FRBs are short, astrophysical radio transients of extragalactic origin. Their burst signal is dispersed by the free electrons in the large-scale structure, leading to delayed arrival times at different frequencies characterised by the dispersion measure (DM). Since the dispersion measure is sensitive to the integrated line-of-sight electron density, it is a direct probe of the baryonic content of the Universe. We investigate how FRBs can break the degeneracies between cosmological and feedback parameters by correlating the observed Dispersion Measure with the weak gravitational lensing signal of a Euclid-like survey. In particular, we use a simple one-parameter model controlling baryonic feedback, but we expect similar findings for more complex models. Within this model, we find that ∼ 5 × 10 4 FRBs are sufficient to constrain the baryonic feedback significantly better than cosmic shear alone, tightening the constraints considerably (roughly by a factor of five). We also expect a 1.5-fold improvement in the sum of neutrino masses.

Related

  1. A first measurement of baryonic feedback with Fast Radio Bursts
    Robert Reischke, Steffen Hagstotz
    The Open Journal of AstrophysicsPeer-reviewedCC BY7 citedGalaxiesOpenAlex
  2. Backlighting the Universe with Fast Radio Bursts: An Anthology of Dispersion Measure Cross Correlations with Tracers of Large-scale Structure and Baryonic Matter
    Kritti Sharma, Elisabeth Krause, Vikram Ravi +11
    The Astrophysical JournalPeer-reviewedCC BY 4.0Full text1 citedGalaxiesCrossref
  3. Correlated Signatures of Plasma Lensing in Fast Radio Bursts
    Paz Beniamini, Pawan Kumar
    arXivPreprintCC BY 4.0Full textHigh-energy astrophysicsarXiv
  4. Mapping large-scale structure without galaxy formation - combining fast radio bursts with CMB lensing
    James M. Sullivan, Kiyoshi Masui, Ryan Raikman +2
    arXivPreprintCC BY 4.0Full textCosmologyarXiv
  5. Self lensing in BH-NS binaries as progenitors for periodically repeating Fast Radio Bursts
    L. E. Rodríguez, M. Cruces, G. Voisin +2
    arXivPreprintCC BY-NC-SA 4.0Full textHigh-energy astrophysicsarXiv

Cite

BibTeXRIS
BibTeX
@article{reischke2026calibrating,
  title = {{Calibrating baryonic feedback with weak lensing and fast radio bursts}},
  author = {Robert Reischke and Dennis Neumann and Klara Bertmann and Steffen Hagstotz and Hendrik Hildebrandt},
  journal = {Journal of Cosmology and Astroparticle Physics},
  year = {2026},
  month = jun,
  doi = {10.1088/1475-7516/2026/06/006},
  url = {https://doi.org/10.1088/1475-7516/2026/06/006},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Calibrating baryonic feedback with weak lensing and fast radio bursts
AU  - Robert Reischke
AU  - Dennis Neumann
AU  - Klara Bertmann
AU  - Steffen Hagstotz
AU  - Hendrik Hildebrandt
PY  - 2026
DA  - 2026/06/01
JO  - Journal of Cosmology and Astroparticle Physics
DO  - 10.1088/1475-7516/2026/06/006
UR  - https://doi.org/10.1088/1475-7516/2026/06/006
AB  - One of the key limitations of large-scale structure surveys of the current and future generation, such as Euclid, LSST-Rubin or Roman, is the influence of feedback processes on the distribution of matter in the Universe. This effect, called baryonic feedback, modifies the matter power spectrum on non-linear scales much stronger than any cosmological parameter of interest. Constraining these modifications is therefore key to unlocking the full potential of the upcoming surveys, and we propose to do so with the help of Fast Radio Bursts (FRBs). FRBs are short, astrophysical radio transients of extragalactic origin. Their burst signal is dispersed by the free electrons in the large-scale structure, leading to delayed arrival times at different frequencies characterised by the dispersion measure (DM). Since the dispersion measure is sensitive to the integrated line-of-sight electron density, it is a direct probe of the baryonic content of the Universe. We investigate how FRBs can break the degeneracies between cosmological and feedback parameters by correlating the observed Dispersion Measure with the weak gravitational lensing signal of a Euclid-like survey. In particular, we use a simple one-parameter model controlling baryonic feedback, but we expect similar findings for more complex models. Within this model, we find that ∼ 5 × 10 4 FRBs are sufficient to constrain the baryonic feedback significantly better than cosmic shear alone, tightening the constraints considerably (roughly by a factor of five). We also expect a 1.5-fold improvement in the sum of neutrino masses.
SN  - 1475-7508
SN  - 1475-7516
ER  -