http://arxiv.org/abs/2210.07367
This work suggests how to search for streaming constituents from the dark sector. Following cosmological reasoning, a very large number of dark fine grained streams are expected in the Galaxy. Within the solar system, planetary gravitational focusing is effective for the slow DM particles, with possible strong flux enhancements only for streaming dark constituents. The present simulation incorporates gravitational effects preceding their encounter with Earth bound detectors. The gravitational self-focusing by the inner Earth can be large, and therefore must also be taken into account. Spatiotemporal transient density enhancements are also derived, which are of interest for DM experiments. Due to the built-in gravitational flux enhancements, advantages are expected when compared to the detection schemes designed for the smooth Standard Halo Model (SHM). In addition, a network of sensors would have a much better discovery potential as long as the hypothetical streams of dark constituents, along their rest mass and coupling strength to normal matter are unknown. This work is relevant for all ongoing DM searches, including state-of-the-art detection schemes like GNOME, EDM experiments, and the ECHO idea. Also astrophysical searches for the dark sector could benefit more when targeting planetary and solar/stellar atmospheres. The present simulation focuses on fine grained streams but it can be applied to any configuration of invisible matter propagating inside the solar system.
A. Kryemadhi, M. Maroudas, A. Mastronikolis, et. al.
Mon, 17 Oct 22
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Comments: N/A