A long-time question in astrophysics appears to finally be answered, thanks to a collection of large, high-tech water tanks on a mountainside in Mexico. The High-Altitude Water Cherenkov (HAWC) data ...

Modern astronomy has clung to the belief that the relativistic outflows or jets, responsible for the existence of electromagnetic radiation of particularly high energies, are located in the nuclei of ...

Scientists have long thought that the highest-energy gamma rays in space are forged in the intense furnaces of very active supermassive black holes, far, far away. But a new study has traced some of ...

Although our galaxy's supermassive black hole is relatively placid, the center of the Milky Way wherein it resides is not a placid place. Its extreme location is rife with what can best be described ...

HAWC observations show that a previously known gamma ray source in the Milky Way galaxy, TeV J1930+188, which is probably due to a pulsar wind nebula, is far more complicated than originally thought.

Sources of high-energy cosmic rays in the vicinity of the microquasar V4641 Sag, on the left with energies above a teraelectronvolt, on the right – hundreds of teraelectronvolts. The location of the ...