17 November 2017
Excess positrons immersing Earth have unknown origin
... as potassium-40, however they are also found in cosmic rays, and astronomers have long been intrigued by why there are... from. One of which is the High-Altitude Water Cherenkov Gamma-Ray Observatory (HAWC) detector in Mexico. As the name implies ...
20 September 2017
A new way to 'weigh' extragalactic black holes
...a temperature of around 105 K whilst emitting energetic photons at optical, ultraviolet, and X-ray wavelengths. These X-ray sources have been mistaken in the past for fast Gamma Ray Bursts (GRBs), however these energetic bursts are short-lived, while...
24 February 2020
First results from InSight reveal a seismically active Mars
... soil moving down a crater wall over time due to gravity. Data on Mars’ seismic activity coupled with Gamma Ray Spectrometer chemical mapping has helped another team headed by P. Lognonné and colleagues to paint a picture of what the...
March 2018
Exploring the extreme universe
...possible to study photons with infrared, ultraviolet, X-ray and gamma-ray wavelengths in the wake of the rocket era,...secondary electrons and positrons produced by the interaction of the incoming gamma-rays. It is made up of 56 planes of double-sided ...
18 January 2017
The unusual tails of a pulsar give a clue as to what type of pulse it generates
... may point along the direction of the jets, she said. Gamma-ray emission, on the other hand, is produced at higher altitudes ... so we detect the bright radio pulses while most of the gamma-ray emission is directed in the plane of the sky and misses the...
August 2019
Lessons from the Sun
... monitors saw readings go off the charts and the first ever recorded gamma-ray flare photons were detected. Within a few minutes, in-orbit X-ray sensors saturated and military radio communications blacked out. Lacking today’s sensors...
