REVIEW 6 cited by
Dark matter coupled to radiation: Limits from the Milky Way satellites
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
abstract
Interactions between dark matter (DM) and relativistic particles at early times suppress structure formation on small scales. In particular, the scattering process transfers heat and momentum from radiation to DM, ultimately reducing the abundance of low-mass DM halos and the dwarf galaxies they host. Herein, we derive limits on DM-photon and DM-neutrino scattering cross section using the Milky Way satellite galaxy population. We consider temperature-independent interactions parameterized by DM mass ($m_\chi$) and DM-radiation interaction cross section ($\sigma_{\chi\text{-}i}$, where $i$ represents the target species). By requiring that the linear matter power spectra be strictly less suppressed than in the case of a thermal-relic warm DM cutoff, we derive the following $95\%$ upper limits at $m_\chi=1$ MeV: $\sigma_{\chi\text{-}\gamma}<1.98\times10^{-38}\text{cm}^2$ and $\sigma_{\chi\text{-}\nu}<3.16\times10^{-38}\text{cm}^2$. Our bounds on $\sigma_{\chi\text{-}i}$ depend linearly on $m_\chi$ for $m_\chi \gtrsim 1~\mathrm{MeV}$ and improve upon previous limits by 1 order of magnitude. The mass dependence of our limit approaches $m_\chi^3$ at lower masses due to the effects of DM sound speed; at $m_{\chi}=100~\mathrm{keV}$, we arrive at an upper limit 3 orders of magnitude more stringent than achieved in previous explorations. Upcoming dwarf galaxy surveys will further improve the sensitivity of similar analyses, complementing laboratory and indirect detection searches for DM-radiation interactions.
Forward citations
Cited by 6 Pith papers
-
High resolution Lyman-{\alpha} forest constraints on dark matter-neutrino scattering
The Lyman-alpha forest constrains dark matter-neutrino scattering to u_nu_chi < 1.5e-8 (95% C.L.), excluding previously claimed hints of a non-zero interaction.
-
Dark matter scattering with pre-supernova neutrinos
Attenuation of pre-supernova electron antineutrinos by local dark matter yields upper limits on the reduced DM–ν cross section of order 10^{-21} cm^{2}/GeV at detectors such as JUNO, Super-K and KamLAND.
-
New Constraints on Neutrino-Dark Matter Interactions: A Comprehensive Analysis
Most benchmark neutrino-dark matter couplings adopted in previous studies are excluded when laboratory meson and Z decay bounds are combined with cosmological and astrophysical constraints, leaving only special galact...
-
The Highest-Energy Neutrino Event Constrains Dark Matter-Neutrino Interactions
KM3-230213A limits dark matter-neutrino scattering to below about 1e-22 cm^2/GeV at 220 PeV, but most simple dark matter models are excluded by unitarity above MeV masses.
-
Cosmological impact of $\nu$DM interactions enhanced in narrow redshift ranges
A redshift-limited dark matter-neutrino interaction reproduces the observed preference for non-zero coupling in CMB and cosmic shear data and evades small-scale structure bounds.
-
Dark Secrets of Baryons: Illuminating Dark Matter-Baryon Interactions with JWST
JWST ultraviolet luminosity function data currently provide the strongest upper limits on velocity-dependent (∝v^{-2}) dark matter–proton scattering for sub-GeV dark matter.
Discussion (0). Continue with ORCID to comment.