Dark matter capture in celestial objects: improved treatment of multiple scattering and updated constraints from white dwarfs

Dasgupta, Basudeb; Gupta, Aritra; Ray, Anupam

doi:10.1088/1475-7516/2019/08/018

Cited by 81 publications

(75 citation statements)

References 89 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Once the kinetic energy of the DM is less than the gravitational potential, the DM particle is captured. DM capture can occur via single or multiple scatters with Jovian matter [57,[106][107][108]. The DM capture rate for N required scatters is given by [106] C N = πR 2 p N (τ )…”

Section: A Dark Matter Capturementioning

confidence: 99%

First Analysis of Jupiter in Gamma Rays and a New Search for Dark Matter

Leane¹,

Linden²

2021

Preprint

View full text Add to dashboard Cite

We present the first dedicated gamma-ray analysis of Jupiter, using 12 years of data from the Fermi Telescope. We find no robust evidence of gamma-ray emission, and set upper limits of ∼ 10 −9 GeV cm −2 s −1 on the Jovian gamma-ray flux. We point out that Jupiter is an advantageous dark matter (DM) target due to its large surface area (compared to other solar system planets), and cool core temperature (compared to the Sun). These properties allow Jupiter to both capture and retain lighter DM, providing a complementary probe of sub-GeV DM. Our analysis focuses on the annihilation of sub-GeV DM to long-lived particles, which can escape the Jovian surface and decay into gamma rays. In this regime, we constrain DM-proton scattering cross-sections as low as 10 −41 cm 2 , which is up to ten orders of magnitude more sensitive than direct detection, and subject to fewer astrophysical uncertainties than other limits in this parameter space. Our work motivates follow-up studies with upcoming MeV telescopes such as AMEGO and e-ASTROGAM.

show abstract

Section: A Dark Matter Capturementioning

confidence: 99%

First Analysis of Jupiter in Gamma Rays and a New Search for Dark Matter

Leane¹,

Linden²

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The difference between the WD and the NS case is that very old WD's with low surface temperature have been observed, in particular within the M4 globular cluster [103,104]. Such observations have been used to claim very strong constraints on the DM-nucleon scattering cross section, σ SI 10 −42 − 10 −43 cm 2 for DM masses in the range 10 −2 − 10 7 GeV [105,106]. These limits were derived based on the assumption that the DM density within the M4 globular cluster is as high as 10 3 GeV/cm 3 , which can make the DM contribution to the WD luminosities as high as the observed values.…”

Section: Dm Indirect Detectionmentioning

confidence: 99%

A little theory of everything, with heavy neutral leptons

Cline

Puel

Toma

2020

J. High Energ. Phys.

View full text Add to dashboard Cite

Recently a new model of "Affleck-Dine inflation" was presented, that produces the baryon asymmetry from a complex inflaton carrying baryon number, while being consistent with constraints from the cosmic microwave background. We adapt this model such that the inflaton carries lepton number, and communicates the lepton asymmetry to the standard model baryons via quasi-Dirac heavy neutral leptons (HNLs) and sphalerons. One of these HNLs, with mass 4.5 GeV, can be (partially) asymmetric dark matter (DM), whose asymmetry is determined by that of the baryons. Its stability is directly related to the vanishing of the lightest neutrino mass. Neutrino masses are generated by integrating out heavy sterile neutrinos whose mass is above the inflation scale. The model provides an economical origin for all of the major ingredients missing from the standard model: inflation, baryogenesis, neutrino masses, and dark matter. The HNLs can be probed in fixed-target experiments like SHiP, possibly manifesting N -N oscillations. A light singlet scalar, needed for depleting the DM symmetric component, can be discovered in beam dump experiments and searches for rare decays, possibly explaining anomalous events recently observed by the KOTO collaboration. The DM HNL is strongly constrained by direct searches, and could have a cosmologically interesting self-interaction cross section.

show abstract

“…In addition, the effects of DM on stars can be used to solve the paradox of youth problem for stars that are located near the Galactic massive black hole [4]. In addition to normal stars, DM effects on other celestial bodies like the moon [5,6] , planets [7] , neutron stars (NS) [8][9][10][11], white dwarf stars (WD) [12][13][14][15], black holes [16][17][18] and binary star systems [19] are investigated in the literature. By passing the time, stars absorb and gather DM particles from the halo of galaxies.…”

Section: Introductionmentioning

confidence: 99%

Dark Matter Effects on Compact Binary Stars

Hassani¹,

Pazhouhesh²

2021

Preprint

View full text Add to dashboard Cite

As compact binary star systems move inside the halo of our Galaxies, they interact with dark matter particles. The interaction between dark matter particles and baryonic matter causes dark matter particles to lose some part of their kinetic energy. After dark matter particles have lost part of their kinetic energy, they gravitationally bound to stars and stars start to accrete dark matter particles from the halo. The accretion of dark matter particles inside compact binary systems increases the mass of the binary components and then, the total mass of the binary systems increases too. According to Kepler's third law, increased mass by this way can affect other physical parameters (e.g. semi-major axes and orbital periods) of these systems too. In this work, we estimated the period change of some known compact binary systems due to the accretion of dark matter particles into them. We investigated the effects of different dark matter particle candidates with masses in the range 10 −15 − 10 5 𝐺𝑒𝑉 .𝑐 −2 and dark matter density as high as the dark matter density near the Galactic central regions. Our overall result is that the estimated period change due to the accretion of dark matter particles into compact binary systems can be as high as the measured values for these systems.

show abstract

Dark matter capture in celestial objects: improved treatment of multiple scattering and updated constraints from white dwarfs

Cited by 81 publications

References 89 publications

First Analysis of Jupiter in Gamma Rays and a New Search for Dark Matter

First Analysis of Jupiter in Gamma Rays and a New Search for Dark Matter

A little theory of everything, with heavy neutral leptons

Dark Matter Effects on Compact Binary Stars

Contact Info

Product

Resources

About