Entering the era of measuring sub-Galactic dark matter structure: Accurate transfer functions for axino, gravitino, and sterile neutrino thermal warm dark matter

Vogel, Cannon M.; Abazajian, Kevork N.

doi:10.1103/physrevd.108.043520

Cited by 4 publications

(2 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These factors influence the location and sharpness of the cutoff in the transfer functions. Nonetheless, in general, the differences between warm and cold DM transfer functions are small [64].…”

Section: Jcap09(2023)047mentioning

confidence: 96%

Exploring ultralight scalar assistance in sterile neutrino dark matter: cold spectrum and unusual X/gamma-ray signatures

He,

Liu,

et al. 2023

J. Cosmol. Astropart. Phys.

View full text Add to dashboard Cite

We present a scalar-driven sterile neutrino production model where the interaction with the ultralight scalar field modifies the oscillation production of sterile neutrinos in the early universe. The model effectively suppresses the production of sterile neutrinos at low temperatures due to the heavy scalar mass, resulting in a colder matter power spectrum that avoids constraints from small-scale structure observations. In this model, the dominant dark matter relic is from sterile neutrinos, with only a small fraction originating from the ultralight scalar. Furthermore, the model predicts a detectable X/γ-ray flux proportional to the cubic density of local sterile neutrinos for a light scalar mass due to the light scalar coupling to sterile neutrinos. This distinguishes our model from normal decaying dark matter, which has a linear dependence on the density. In addition, the model predicts a potential low-energy monochromatic neutrino signal that can be detectable by future neutrino telescopes.

show abstract

Section: Jcap09(2023)047mentioning

confidence: 96%

Exploring ultralight scalar assistance in sterile neutrino dark matter: cold spectrum and unusual X/gamma-ray signatures

He,

Liu,

et al. 2023

J. Cosmol. Astropart. Phys.

View full text Add to dashboard Cite

show abstract

“…Vogel & Abazajian (2023) found that Equation (4) is slightly inaccurate, at the ≈10% level, when compared to transfer functions output by linear Boltzmann solvers for m WDM  3 keV (also see Appendix C ofDecant et al (2022)). We do not correct for this discrepancy here because the (sub)halo mass function suppression we adopt is based on Equation (4); this will be addressed in a forthcoming study (E. O.Nadler et al 2024, in preparation).…”

mentioning

confidence: 99%

Forecasts for Galaxy Formation and Dark Matter Constraints from Dwarf Galaxy Surveys

Nadler,

Gluscevic,

Driskell

et al. 2024

ApJ

View full text Add to dashboard Cite

The abundance of faint dwarf galaxies is determined by the underlying population of low-mass dark matter (DM) halos and the efficiency of galaxy formation in these systems. Here, we quantify potential galaxy formation and DM constraints from future dwarf satellite galaxy surveys. We generate satellite populations using a suite of Milky Way (MW)–mass cosmological zoom-in simulations and an empirical galaxy–halo connection model, and assess sensitivity to galaxy formation and DM signals when marginalizing over galaxy–halo connection uncertainties. We find that a survey of all satellites around one MW-mass host can constrain a galaxy formation cutoff at peak virial masses of M 50 = 10 8 M ⊙ at the 1σ level; however, a tail toward low M 50 prevents a 2σ measurement. In this scenario, combining hosts with differing bright satellite abundances significantly reduces uncertainties on M 50 at the 1σ level, but the 2σ tail toward low M 50 persists. We project that observations of one (two) complete satellite populations can constrain warm DM models with m WDM ≈ 10 keV (20 keV). Subhalo mass function (SHMF) suppression can be constrained to ≈70%, 60%, and 50% that in cold dark matter (CDM) at peak virial masses of 108, 109, and 1010 M ⊙, respectively; SHMF enhancement constraints are weaker (≈20, 4, and 2 times that in CDM, respectively) due to galaxy–halo connection degeneracies. These results motivate searches for faint dwarf galaxies beyond the MW and indicate that ongoing missions like Euclid and upcoming facilities including the Vera C. Rubin Observatory and Nancy Grace Roman Space Telescope will probe new galaxy formation and DM physics.

show abstract

JWST lensed quasar dark matter survey – II. Strongest gravitational lensing limit on the dark matter free streaming length to date

Keeley,

Nierenberg,

Gilman

et al. 2024

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

This is the second in a series of papers in which we use JWST MIRI multiband imaging to measure the warm dust emission in a sample of 31 multiply imaged quasars, to be used as a probe of the particle nature of dark matter. We present measurements of the relative magnifications of the strongly lensed warm dust emission in a sample of 9 systems. The warm dust region is compact and sensitive to perturbations by populations of halos down to masses ∼106 M⊙. Using these warm dust flux-ratio measurements in combination with 5 previous narrow-line flux-ratio measurements, we constrain the halo mass function. In our model, we allow for complex deflector macromodels with flexible third and fourth-order multipole deviations from ellipticity, and we introduce an improved model of the tidal evolution of subhalos. We constrain a WDM model and find an upper limit on the half-mode mass of 107.6M⊙ at posterior odds of 10:1. This corresponds to a lower limit on a thermally produced dark matter particle mass of 6.1 keV. This is the strongest gravitational lensing constraint to date, and comparable to those from independent probes such as the Lyα forest and Milky Way satellite galaxies.

show abstract

Entering the era of measuring sub-Galactic dark matter structure: Accurate transfer functions for axino, gravitino, and sterile neutrino thermal warm dark matter

Cited by 4 publications

References 47 publications

Exploring ultralight scalar assistance in sterile neutrino dark matter: cold spectrum and unusual X/gamma-ray signatures

Exploring ultralight scalar assistance in sterile neutrino dark matter: cold spectrum and unusual X/gamma-ray signatures

Forecasts for Galaxy Formation and Dark Matter Constraints from Dwarf Galaxy Surveys

JWST lensed quasar dark matter survey – II. Strongest gravitational lensing limit on the dark matter free streaming length to date

Contact Info

Product

Resources

About