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Monday, October 17, 2022

This Week in Physics - Potential Dark Matter Signal Gives Way to New Limits

 

This Week in Physics Magazine — October 17, 2022

Research News

Potential Dark Matter Signal Gives Way to New Limits

October 13, 2022

Results from two leading dark matter experiments—XENONnT and PandaX-4T—rule out an enigmatic signal detected in 2020 and set new constraints on dark matter particle candidates consisting of light fermions, respectively.

synopsis

An Absorbing Dark Matter Experiment

October 13, 2022

Researchers have analyzed the first data from a dark matter direct-detection experiment, searching for a form of dark matter known as fermionic dark matter via its absorption by nuclei.

Focus

Spacecraft Makes Progress on Solar Heating Mystery

October 14, 2022

Data from the Parker Solar Probe confirms a long-suspected heat source for the Sun's surprisingly hot corona, but there may be others.

Viewpoint

A "Green" Quantum Sensor

Vadim Vorobyov – October 17, 2022

Researchers have demonstrated a quantum sensor that can power itself using sunlight and an ambient magnetic field, an achievement that could help reduce the energy costs of this energy-hungry technology.

Research News

Spacecraft Crash Changes Asteroid Orbit by 32 Minutes

October 12, 2022

NASA has confirmed that its DART spacecraft has altered the trajectory of the asteroid that it crashed into two weeks ago, demonstrating the potential of this tool for planetary defense.

synopsis

The Gap-Free Helices of Sea Snails

October 17, 2022

The shells of some mollusk species have compact helical structures that researchers propose develop from the self-assembly of a liquid-crystalline material.

synopsis

A Ferromagnet That Easily Sheds Spins

October 12, 2022

Researchers demonstrate room-temperature spin transfer across an interface between an iron-based ferromagnet and a semiconductor, opening a route to creating novel spintronic devices.

synopsis

Water-Jet Patterns Predicted

October 11, 2022

The patterns observed in a jet exiting a nozzle are directly related to the size of the nozzle's opening and to the rate at which water flows.


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