• We hope all of you have a great holiday season and an incredible New Year. Thanks so much for being part of the Space community!

How To Dark matter: Agreed terms help sensible discussion

Page 2 - Seeking answers about space? Join the Space community: the premier source of space exploration, innovation, and astronomy news, chronicling (and celebrating) humanity's ongoing expansion across the final frontier.


The devil is in the detail
Sterile neutrino - Wikipedia
See 3.

Neutrinos and dark matter - AIP Publishing
https://aip.scitation.org › doi › pdf

by A Ibarra · 2015 · Cited by 4 — Neutrinos could be key particles to unravel the nature of the dark matter of the ... long-lived on cosmological time-scales and electrically neutral.

Connecting neutrino physics with dark matter - IOPscience
https://iopscience.iop.org › article

by M Lattanzi · 2014 · Cited by 39 — The origin of neutrino masses and the nature of dark matter are two in ... by an electromagnetically neutral component dubbed dark matter.

[1103.3261] Neutrino Physics with Dark Matter Experiments ...
https://arxiv.org › hep-ph

by M Pospelov · 2011 · Cited by 75 — ... Dark Matter Experiments and the Signature of New Baryonic Neutral ... If some fraction of solar neutrinos oscillate into \nu_b on their ...

DARK MATTER AND NEUTRINOS arXiv:1711.10564v1 ...
https://arxiv.org › pdf

by G Sharma · 2017 — Many experiments has been performed in search of dark matter candidates. Neutrinos, which are electrically neutral and tiny parti- cles, seem ...

Signal from sterile neutrino dark matter in extra U(1) model at ...
https://www.sciencedirect.com › science › article › pii

by O Seto · 2020 · Cited by 3 — Then, one RH neutrino could be a DM candidate if its lifetime is long enough, because it is electrically neutral [7]. Thus, three RH neutrino ...

A White Paper on keV Sterile Neutrino Dark Matter - OSTI.GOV
https://www.osti.gov › pages › servlets › purl

by R Adhikari · 2017 · Cited by 444 — we first review the physics motivation for sterile neutrino Dark Matter, based on ... Indeed, the neutral, weakly interacting, massive neutrino could in.

Cat :)


The devil is in the detail
Astronomy Now, October 2021 “Is dark matter real”, by Keith Cooper
Apologies for a repetition, but I really think this up to date assessment belongs in this thread,

After reviewing its origins (“It was named dark matter, though nobody really knew what it was”) and considering previous suggestions, such as MACHOs (Massive Compact Halo Objects) which are known objects such as neutron stars and black holes, attention has passed to new types of particles, distinct from normal matter – “cold, in that they have low energy and tend to sit in large clumps, and that they weakly interact with other forms of normal matter or electromagnetic radiation”. These are called WIMPS (Weakly Interacting Massive Particles).

Some possible modification of normal gravity is considered – MOND, or MOdified Newtonian Dynamics, but this does not currently compete with dark matter, in terms of explanations of observed phenomena. There is considerably more relevant discussion including coverage of the Bullet Cluster (collision between two galaxy clusters) and NGC 1052 –DF2 and –DF4Awithout dark matter) and evidence from the Cosmic Microwave Background radiation, provided by COBE, WMAP and Planck,

In conclusion: “Of course, what would really cement things in favour of dark matter would be if we could actually directly detect a bonafide particle of dark matter” and efforts are being made in this direction involving xenon atoms which, being relatively massive (atomic number 54) “have a greater chance of interacting . . . with a dark matter WIMP”. Whilst no dark matter particles have yet been found, “if dark matter really exists, and is a WIMP, then it is running out of places to hide.”

Cat :)