Tag Archive for 'Self-Interacting dark matter'

GD-1 exhibits spur and gap structures that may result from a close encounter with a dense substructure. Image credit: University of California, Riverside.

Study: GD-1 Stellar Stream’s Distinctive Features Caused by Self-Interacting Dark Matter Subhalo

Jan 7, 2025 by News Staff

A core-collapsing self-interacting dark matter subhalo is responsible for the peculiar spur and gap features observed in GD-1, a stellar stream within...

This artist’s conception shows the galaxy merger and its two central black holes. Image credit: ALMA / ESO / NAOJ / NRAO / M. Weiss, NRAO, AUI & NSF.

Astrophysicists May Have Solved ‘Final Parsec Problem’ of Supermassive Black Hole Mergers

Jul 23, 2024 by News Staff

New calculations reveal that pairs of supermassive black holes can merge into a larger black hole because of previously overlooked behavior of dark matter...

Siraj & Loeb explore the possibility that accretion flares resulting from the tidal disruption of small Oort Cloud bodies by a putative primordial black hole could power an observable optical signal that could be searched for with the upcoming Vera C. Rubin Observatory Legacy Survey of Space and Time. Image credit: Sci-News.com / Zdeněk Bardon / ESO.

Does Self-Interacting Dark Matter Produce Seed Black Holes?

Jun 21, 2021 by News Staff

Astrophysical observations show that supermassive black holes exist when the Universe is just 800 million years old after the Big Bang (just 6% of its...

The NASA/ESA Hubble Space Telescope took this image of NGC 1052-DF2 on November 16, 2017. Image credit: NASA / ESA / P. van Dokkum, Yale University.

Self-Interacting Dark Matter Helps Explain Formation of Dark-Matter-Deficient Galaxies

Sep 10, 2020 by News Staff

The so-called self-interacting dark matter theory helps explain why NGC 1052-DF2 and NGC 1052-DF4, a pair of ultra-diffuse galaxies located approximately...