Descrição
Despite its overwhelming presence, dark matter, comprising approximately 85% of the universe's total matter, continues to elude detection. Indirect detection, which involve searching Standard Model particles resulting from the decay or self-annihilation of dark matter particles, represent one approach to unveil signs of dark matter. When the dark matter particles possess masses in the GeV-TeV range, the detection of $\gamma$-rays emanating from astrophysical entities densely populated with dark matter becomes a viable method of detection. (1) Among the celestial bodies, dwarf galaxies, despite not boasting the highest densities, assume significance as they are predominantly composed of dark matter and are relatively close to our planet. Particularly, dwarf spheroidal galaxies (dSphs), characterized by an aged stellar population and lack of active star formation, become invaluable since they would exhibit negligible $\gamma$-ray emissions in the absence of dark matter. The objective of this study is to predict the potential detectability of signals arising from dark matter annihilation or decay in dwarf galaxies utilizing the Southern Wide-field Gamma-ray Observatory (SWGO), a future observatory to be constructed in South America. (2) The collective observations of SWGO are shown to yield competitive constraints on dark matter within the mass range of hundreds of GeV to hundreds of TeV. (3)
Referências
1 CIRELLI, M. et al. PPPC 4 DM ID: a poor particle physicist cookbook for dark matter indirect detection. Journal of Cosmology and Astroparticle Physics, v. 2011, p. 051, Mar. 2011.
2 GERINGER-SAMETH, A.; KOUSHIAPPAS, S. M.; WALKER, M. Dwarf galaxy annihilation and decay emission profiles for dark matter experiments. Astrophysical Journal, v. 801, n. 2, p. 74, 2015.
3 VIANA, A. et al. Searching for dark matter in the galactic halo with a wide field of view TeV Gamma-ray Observatory in the Southern Hemisphere. Journal of Cosmology and Astroparticle Physics, v. 2019, n. 12, p. 061-1-061-16, Dec. 2019.
| Certifico que os nomes citados como autor e coautor estão cientes de suas nomeações. | Sim |
|---|---|
| Palavras-chave | Dark matter. Dwarf galaxies. SWGO. |
| Orientador e coorientador | Aion da Escóssia Melo Viana |
| Subárea 1 | Astrofísica e Astronomia |
| Subárea 2 (opcional) | Física Computacional |
| Agência de Fomento | FAPESP |
| Número de Processo | 2021/09744-9 |
| Modalidade | MESTRADO |
| Concessão de Direitos Autorais | Sim |
