The INTEGRAL survey is the first of its kind to glimpse into the largely unexplored higher-energy, or "hard," X-ray regime of 20,000 to 40,000 electron-volts
Iron also emits X rays at the slightly lower energy of 6,400 electron-volts
The detection of a cosmic ray with an energy of 3 x 102o electron-volts
- the highest energy ever recorded for a cosmic ray - also suggests that these rays can't be relics from the early universe.
6 billion electron-volts
produced copious quantities of subatomic particles called upsilons.
But the bulk of the X-ray background - the high-energy spectrum above a few thousand electron-volts
(eV) - remained a mystery.
Generated by data from the Compton Gamma Ray Observatory's (GRO) EGRET telescope, the map depicts emissions with an energy greater than 100 million electron-volts
Analyzing accumulated data from billions of collisions that produced no top quark, physicists using the CDF detector now report 108 billion electron-volts
(108 GeV) as the new lower limit on the top quark's mass.
satellite will image medium-energy X-ray emissions from 300 to 12,000 electron-volts
Such minute changes in path alter the beam energy by as much as 10 million electron-volts
- enough to make the moon's gravitational effect the cause of the dominant error in determinations of the [Z.
NASA's Compton Gamma Ray Observatory (GRO) found that the puzzling source had become the most powerful radiator detected at the X-ray energy of 100,000 electron-volts
The ejected electrons gather into compact bunches and reach an energy of 46 billion electron-volts
as they race down the SLC's 2-mile track to crash head-on into high-energy, unpolarized positrons traveling at the same speed.
Electrons accelerated to several million electron-volts
of energy emit these radio waves in the corona as they spiral around strong magnetic fields.