Pith. sign in

REVIEW 5 cited by

Dark matter constraints from dwarf galaxies with data-driven J-factors

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

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

arxiv 2002.01229 v2 pith:FVRJYXQX submitted 2020-02-04 astro-ph.HE

Alexandre Alvarez , Francesca Calore , Anna Genina , Justin I. Read , Pasquale D. Serpico , Bryan Zaldivar This is my paper · ORCID
classification astro-ph.HE
keywords j-factorsbackgrounddata-drivendwarfclassicalconstraintsdarkdata
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
read the original abstract

We present an updated analysis of the gamma-ray flux from the directions of classical dwarf spheroidal galaxies, deriving new constraints on WIMP dark matter (DM) annihilation using a decade of Fermi-LAT data. Among the major novelties, we infer the dwarfs' J-factors by including new observations without imposing any a priori parametric profile for the DM distribution. While statistically compatible with results obtained from more conventional parameterisations, this procedure reduces the theoretical bias imposed on the data. Furthermore, we retain the full data-driven shape of the J-factors' empirical probability distributions when setting limits on DM, without imposing log-normality as is typically done. In conjunction with the data-driven J-factors, we use a new method for estimating the probability distribution function of the astrophysical background at the dwarf position, fully profiling over background uncertainties. We show that, for most classical dwarfs, the background systematic uncertainty dominates over the uncertainty on their J-factors. Raw distributions of J- and D-factors (the latter being the analogous of J-factors for decaying DM) are available upon request.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Search for Dark Matter Annihilation and Decay with H$\alpha$ Line Emission

    hep-ph 2025-12 conditional novelty 7.0 of 10

    H-alpha line emission from recombining gas in quiet dwarf galaxies is a new probe of dark matter annihilation/decay, giving leading limits for some dark matter masses.

  2. Probing the Phenomenology of Dark Matter from Decoupled Freeze-Out

    hep-ph 2025-11 conditional novelty 6.0 of 10

    In a scalar-plus-pseudoscalar mediator model, decoupled freeze-out can produce the observed dark matter relic density via s-wave annihilation while evading CMB limits, though indirect-detection and BBN bounds leave on...

  3. Stellar-like Galactic center excess challenges particle dark matter

    hep-ph 2025-11 conditional novelty 6.0 of 10

    A mixed stellar-bulge and dark-matter fit to Fermi-LAT Galactic Center data yields upper limits on the annihilation cross section that reach the thermal relic line for masses ≲300 GeV under a contracted NFW halo profile.

  4. Detecting dark matter sub-halos in the Galactic plane with the Cherenkov Telescope Array Observatory

    astro-ph.HE 2025-01 conditional novelty 6.0 of 10

    CTAO's Galactic Plane Survey could detect the brightest Milky Way dark matter sub-halo at 5-sigma for TeV-scale WIMPs annihilating to b-quarks with cross section about 3e-25 cm^3/s, roughly ten times the canonical the...

  5. micrOMEGAs 7: Beyond standard cosmology

    hep-ph 2026-06 unverdicted novelty 5.0 of 10

    The micrOMEGAs dark-matter package now solves Boltzmann equations with user-defined expansion and entropy histories, adds sub-GeV hadronic annihilation, and updates CMB, dwarf-galaxy, LZ, and CMS constraints.

Pith tools