Researchers establish fundamental limit on how light bosonic dark matter can be
In a new study published in Physical Review Letters, scientists have estimated a new lower bound on the mass of ultra-lightweight bosonic dark matter particles.
Page 6: Research news on Particle astrophysics
Particle astrophysics is a research area at the interface of particle physics, astrophysics, and cosmology that investigates fundamental particles and their interactions using astrophysical sources and environments. It focuses on high-energy messengers such as cosmic rays, gamma rays, neutrinos, and, increasingly, gravitational waves to probe processes in extreme settings like supernovae, active galactic nuclei, compact object mergers, and the early universe. The field seeks to constrain particle properties, test physics beyond the Standard Model, study dark matter and dark energy candidates, and elucidate acceleration and propagation mechanisms through multi-messenger observations and advanced detection techniques.
Dark matter formed when fast particles slowed down and got heavy, new theory says
A study by Dartmouth researchers proposes a new theory about the origin of dark matter, the mysterious and invisible substance thought to give the universe its shape and structure. They say the hypothetical force shaping ...
General Physics
May 14, 2025
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Results of the HAYSTAC Phase II search for dark matter axions
Axions, hypothetical subatomic particles that were first proposed by theoretical physicists in the late 1970s, remain among the most promising dark matter candidates. Physics theories suggest that the interactions between ...
Physicists propose a new route by which neutrinos can be produced
Buried deep in the ice in the Antarctic are "eyes" that can see elementary particles called neutrinos, and what they've observed is puzzling scientists: a remarkably strong neutrino signal accompanied by a surprisingly weak ...
General Physics
May 8, 2025
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Scientists release underground dark matter experiment design
Researchers, students and science-lovers across the world now have access to the design of the globally significant SABRE South dark matter experiment in the lead up to its installation in the Stawell Underground Physics ...
General Physics
Apr 28, 2025
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Dark matter search: Dimming starlight may signal passage of dark compact objects
The detection of dark matter, an elusive form of matter believed to account for most of the universe's mass, remains a long-standing goal within the physics research community. As this type of matter can only emit, reflect ...
Search for sterile neutrinos continues at nuclear reactors
Neutrinos, elusive fundamental particles, can act as a window into the center of a nuclear reactor, the interior of the Earth, or some of the most dynamic objects in the universe. Their tendency to change "flavors" may provide ...
General Physics
Apr 23, 2025
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Astrophysicists propose new method to directly detect ultralight dark matter
The detection of dark matter, the elusive type of matter predicted to make up most of the universe's mass, is a long-standing goal in the field of astrophysics. As dark matter does not emit, reflect or absorb light, it cannot ...
New experiment halves weight limit of elusive neutrinos
Scientists trying to discover the elusive mass of neutrinos, tiny "ghost particles" that could solve some of the universe's biggest mysteries, announced a new limit on Thursday for how much they could weigh, halving the previous ...
General Physics
Apr 10, 2025
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Do 'completely dark' dark matter halos exist?
Every galaxy is thought to form at the center of a dark matter halo—a region of gravitationally bound matter that extends far beyond the visible boundaries of a galaxy. Stars are formed when gravity within dark matter halos ...
Astronomy
Apr 8, 2025
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