Blazars are active galaxies that emit narrow jets of ionized matter from their centers, aimed towards Earth. Depending on ...

BL Lacertae blazar shifts between classifications faster than expected. It shows record X-ray activity and challenges current ...

Blazars are active galaxies that emit narrow jets of ionised matter from their centres, aimed towards Earth. Depending on ...

Blazar BL Lacertae surprised scientists with its unpredictable activity. Initially thought to be a variable star, it was ...

X-Ray Flashes from a Nearby Supermassive Black ... Nov. 13, 2024 — Scientists using observations from NASA's Neil Gehrels Swift Observatory have discovered, for the first time, the signal ...

Because light travels at a swift but finite ... month of an orbiting observatory equipped with telescopes for the continuous detection of ultraviolet, gamma and X-ray radiation that cannot be ...

Before CTAO, VERITAS was the world's most sensitive very-high-energy-gamma-ray observatory that could detect brief flashes of the blue "Cherenkov" light, created as the gamma rays hit the Earth's ...

ESA’s Integral observed space for 22 years, uncovering gamma-ray bursts, black holes, and gravitational waves.

The "cosmic pinwheel" that astronomers feared could one day shower Earth with lethal gamma rays may not be as dangerous as ...

The European Commission recently established a planned gamma-ray observatory as a European Research Infrastructure Consortium, or ERIC, which will expedite the construction of the telescope and ...