Impact of galactic distributions in celestial capture of dark matter

Bose, D.; Sarkar, Sambo

doi:10.1103/physrevd.107.063010

Cited by 13 publications

(5 citation statements)

References 113 publications

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“…IceCube has a very active program for the indirect detection of DM and can set the limits in SI/SD DM-nucleon cross-section for GeV-to-TeV parameter space. In recent times, several studies have probed the neutrinos originating from captured DM in the core of celestial objects [19,[21][22][23]43,[85][86][87].…”

Section: Discussionmentioning

confidence: 99%

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Probing the Dark Matter Capture Rate in a Local Population of Brown Dwarfs with IceCube Gen 2

Bhattacharjee,

Calore

2024

Particles

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This study explores the potential for dark matter annihilation within brown dwarfs, investigating an unconventional mechanism for neutrino production. Motivated by the efficient accumulation of dark matter particles in brown dwarfs through scattering interactions, we focus on a mass range above 10 GeV, considering dark matter annihilation channels χχ→νν¯νν¯ through long-lived mediators. Using the projected sensitivity of IceCube Generation 2, we assess the detection capability of the local population of brown dwarfs within 20 pc and exclude dark matter-nucleon scattering with cross-sections as low as a few multiples of 10−36cm2.

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Section: Discussionmentioning

confidence: 99%

“…Neutrino telescopes can also simultaneously monitor multiple sources, making them a competitive avenue for DM research [21,22]. The gamma rays from BDs have been considered in some recent studies [8][9][10]23,24], but neutrinos have not been probed earlier from BDs. Neutrino searches offer unique advantages in the quest for DM.…”

Section: Introductionmentioning

confidence: 99%

Probing the Dark Matter Capture Rate in a Local Population of Brown Dwarfs with IceCube Gen 2

Bhattacharjee,

Calore

2024

Particles

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“…However, there is no spin-dependent component for the Carbon case, because the nuclear spin of the carbon nucleus is zero, namely σ χN ∼ 144σ SI χp . We assume DM velocities follow the Maxwell Boltzmann distribution but neglect the small systematic uncertainty of the capture rate arising from various DM velocity distributions [73]. By integrating over the DM velocity distribution [70], the DM capture rate after k-th scattering can be written as…”

Section: Dark Matter Captured By Sirius a And Sirius Bmentioning

confidence: 99%

Multi-frequency test of dark matter annihilation into long-lived particles in Sirius

Chen

Xia

et al. 2023

J. Cosmol. Astropart. Phys.

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New long-lived particles produced at the colliders may escape from conventional particle detectors. Using satellites or ground telescopes, we can detect the photons generated from the annihilation of the star-captured dark matter into a pair of long-lived particles. When the propagation length of these long-lived particles surpasses the interplanetary distance between the Sun and Jupiter, it becomes unfeasible to detect such dark matter signals originating from the Sun or Jupiter on Earth. Our analysis of the dark matter-induced photons produced by prompt radiation, inverse Compton scattering, and synchrotron radiation mechanisms reveals that a decay length of about 10-3 pc for long-lived particles is required for maximum detectability. We investigate the parameters that allow the long-lived particle's lifetime to be consistent with Big Bang nucleosynthesis while also allowing it to escape the confines of our solar system. The Sirius system is proposed as a promising target for the indirect detection of such long-lived particles. Utilizing the prompt, inverse Compton scattering, and synchrotron radiation, upper limits on the dark matter-proton spin-independent and spin-dependent cross section are estimated with the Fermi-LAT null-signal observation and the capabilities of the upcoming Square Kilometre Array radio telescope.

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“…Such a scenario happens only when the NS accretes a large amount of DM, which depends on the interaction cross section between the DM particles and the nucleons [58]. Recently, more progress was made in improving the model of DM capture [59][60][61][62][63][64][65][66]. After being captured, the DM particles lose energy and then thermalize with the NS via repeatedly scattering with nucleons [67,68].…”

Section: Introductionmentioning

confidence: 99%

Improved bounds on the bosonic dark matter with pulsars in the Milky Way

Liang

Shao

2023

J. Cosmol. Astropart. Phys.

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Neutron stars (NSs) can be used to constrain dark matter (DM) since a NS can transform into a black hole (BH) if it captures sufficient DM particles and exceeds the Chandrasekhar limit. We extend earlier work and for the first time take into account the Galactic motion of individual NSs, which changes the amount of the captured DM by as large as one to two orders of magnitude. We systematically apply the analysis to 413 NSs in the Milky Way, and constrain the DM particle mass and its interaction with nucleon simultaneously. We find that the most stringent bound is placed by a few NSs and the bound becomes stronger after considering the Galactic motion. The survival of observed NSs already excludes a cross section σ nX ≳ 10-45 cm2 for DM particles with mass from 100 MeV to 103 GeV. Especially for a mass around 10 GeV, the constraint on the cross section is as stringent as σ nX ≲ 10-49 cm2.

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Impact of galactic distributions in celestial capture of dark matter

Cited by 13 publications

References 113 publications

Probing the Dark Matter Capture Rate in a Local Population of Brown Dwarfs with IceCube Gen 2

Probing the Dark Matter Capture Rate in a Local Population of Brown Dwarfs with IceCube Gen 2

Multi-frequency test of dark matter annihilation into long-lived particles in Sirius

Improved bounds on the bosonic dark matter with pulsars in the Milky Way

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