Gravitational Wave, Cosmic Ray and Dark Matter Telescopes

2009 ◽  
pp. 549-586
Author(s):  
Jingquan Cheng
Keyword(s):  
Dark Matter ◽  
Gravitational Wave ◽  
Cosmic Ray

scholarly journals Present and future status of light dark matter models from cosmic-ray electron upscattering

2021 ◽  
Vol 103 (9) ◽  
Author(s):  
James B. Dent ◽  
Bhaskar Dutta ◽  
Jayden L. Newstead ◽  
Ian M. Shoemaker ◽  
Natalia Tapia Arellano
Keyword(s):  
Dark Matter ◽  
Cosmic Ray ◽  
Future Status

An excess radio signal in the Abell 4038 cluster

2020 ◽  
Vol 500 (4) ◽  
pp. 5583-5588
Author(s):  
Man Ho Chan ◽  
Chak Man Lee
Keyword(s):  
Dark Matter ◽  
Spectral Data ◽  
Cross Section ◽  
Radio Signal ◽  
Dark Matter Particle ◽  
Cosmic Ray ◽  
Annihilation Cross Section ◽  
Radio Continuum ◽  
Test Statistic ◽  
Dark Matter Annihilation

ABSTRACT In the past decade, various instruments, such as the Large Area Telescope (LAT) on the Fermi Gamma Ray Space Telescope, the Alpha Magnetic Spectrometer (AMS) and the Dark Matter Particle Explorer(DAMPE), have been used to detect the signals of annihilating dark matter in our Galaxy. Although some excesses of gamma rays, antiprotons and electrons/positrons have been reported and are claimed to be dark matter signals, the uncertainties of the contributions of Galactic pulsars are still too large to confirm the claims. In this paper, we report on a possible radio signal of annihilating dark matter manifested in the archival radio continuum spectral data of the Abell 4038 cluster. By assuming a thermal annihilation cross-section and comparing the dark matter annihilation model with the null hypothesis (cosmic ray emission without dark matter annihilation), we obtain very large test statistic (TS) values, TS > 45, for four popular annihilation channels, which correspond to more than 6σ statistical preference. This reveals a possible potential signal of annihilating dark matter. In particular, our results are also consistent with the recent claims of dark matter mass, m ≈ 30–50 GeV, annihilating via the $\rm b\bar{b}$ quark channel with the thermal annihilation cross-section. However, at this time, we cannot exclude the possibility that a better background cosmic ray model could explain the spectral data without recourse to dark matter annihilations.

scholarly journals A possible radio signal of annihilating dark matter in the Abell 4038 cluster

2019 ◽  
Vol 495 (1) ◽  
pp. L124-L128 ◽  
Author(s):  
Man Ho Chan ◽  
Chak Man Lee
Keyword(s):  
Dark Matter ◽  
Cross Section ◽  
Radio Signal ◽  
Dark Matter Particle ◽  
Cosmic Ray ◽  
Annihilation Cross Section ◽  
Radio Continuum ◽  
Test Statistic ◽  
Large Area ◽  
Dark Matter Annihilation

ABSTRACT In the past decade, some telescopes [e.g. Fermi-Large Area Telescope (LAT), Alpha Magnetic Spectrometer(AMS), and Dark Matter Particle Explorer(DAMPE)] were launched to detect the signals of annihilating dark matter in our Galaxy. Although some excess of gamma-rays, antiprotons, and electrons/positrons have been reported and claimed as dark matter signals, the uncertainties of Galactic pulsars’ contributions are still too large to confirm the claims. In this Letter, we report a possible radio signal of annihilating dark matter manifested in the archival radio continuum spectral data of the Abell 4038 cluster. By assuming the thermal annihilation cross-section and comparing the dark matter annihilation model with the null hypothesis (cosmic ray emission without dark matter annihilation), we get very large test statistic values >45 for four popular annihilation channels, which correspond to more than 6.5σ statistical preference. This provides a very strong evidence for the existence of annihilating dark matter. In particular, our results also support the recent claims of dark matter mass m ≈ 30–50 GeV annihilating via the bb̄ quark channel with the thermal annihilation cross-section.

scholarly journals Testing Dark Matter models with radio telescopes in light of gravitational wave astronomy

2018 ◽  
Vol 782 ◽  
pp. 732-736 ◽  
Author(s):  
Andrea Addazi ◽  
Yi-Fu Cai ◽  
Antonino Marcianò
Keyword(s):  
Dark Matter ◽  
Gravitational Wave ◽  
Radio Telescopes

scholarly journals Cosmic-Ray Signatures of Dark Matter Decay

2010 ◽  
Author(s):  
David Tran ◽  
George Alverson ◽  
Pran Nath ◽  
Brent Nelson
Keyword(s):  
Dark Matter ◽  
Cosmic Ray

HiSPARC AND MiniGRAIL

2005 ◽  
Vol 20 (29) ◽  
pp. 6884-6886 ◽  
Author(s):  
G. FROSSATI ◽  
C. T. HERBSCHLEB ◽  
J. B. R. OONK ◽  
A. DE WAARD
Keyword(s):  
High School ◽  
The Netherlands ◽  
Gravitational Wave ◽  
Cosmic Ray ◽  
High Energy ◽  
Large Array ◽  
School Project ◽  
Wave Antenna ◽  
Scientific Institutions ◽  
Gravitational Wave Antenna

HiSPARC (High-School Project on Astrophysics Research with cosmics) is a project that envisages the use of a large array of cosmic ray detectors placed at high-schools and scientific institutions in the Netherlands in order to measure high-energy cosmic ray showers. Besides contributing to the HiSPARC project, Leiden University also uses the cosmic ray detectors as veto for the resonant gravitational wave antenna MiniGRAIL.

Searching for signatures of dark matter in the cosmic ray spectrum measured by AMS-01

2011 ◽  
Vol 221 ◽  
pp. 335
Author(s):  
G. Carosi ◽  
S. Xiao ◽  
P. Fisher ◽  
G. Rybka ◽  
F. Zhou
Keyword(s):  
Dark Matter ◽  
Cosmic Ray
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