Gamma rays with energies upwards of 20 teraelectronvolts have been recorded from the Vela pulsar \u2013 20 times higher than any other light ever seen from one of these odd stars
Astronomers have spotted extremely high-energy gamma rays coming from a pulsar. The extraordinarily high energy of this radiation challenges our models of these strange stars and how they accelerate particles.are rapidly rotating neutron stars with powerful magnetic fields. Astronomers have discovered thousands of them, but only four are known to emit gamma rays powerful enough to be detected by ground-based telescopes.
20 TeV – we simply don’t have enough data to know for sure. “We are putting a lower limit on the energies of the highest-energy particles, and this is already challenging for existing models,” says Djannati-Ataï.There are two competing models of photon acceleration by pulsars, both involving high-energy electrons slamming into the lower-energy photons that make up gamma rays.
Deutschland Neuesten Nachrichten, Deutschland Schlagzeilen
Similar News:Sie können auch ähnliche Nachrichten wie diese lesen, die wir aus anderen Nachrichtenquellen gesammelt haben.
Nolte: High-Profile Leftists Victimized by Violent Crime \u2013 Now Will Democrats Care?Source of breaking news and analysis, insightful commentary and original reporting, curated and written specifically for the new generation of independent and conservative thinkers.
Weiterlesen »
How specific book-ban requests entered an Illinois school system \u2013 from inside the districtA months-long investigation by NBC 5 Investigates has uncovered requests like these are part of a record number of requests to remove books from the shelves of\u2026
Weiterlesen »
Hold on, here's why Trump can't become House speaker \u2013 for nowRep. Greg Steube, R-Fla., tells 'The Story' the mathematics and goals of the Republican caucus favor the former president.
Weiterlesen »
Scientists discover the highest energy gamma-rays ever from a pulsarScientists using the H.E.S.S. observatory in Namibia have detected the highest energy gamma rays ever from a dead star called a pulsar. The energy of these gamma rays clocked in at 20 tera-electronvolts, or about 10 trillion times the energy of visible light. This observation is hard to reconcile with the theory of the production of such pulsed gamma rays, as the international team reports in the journal Nature Astronomy.
Weiterlesen »
Indian astronomers investigate star-forming complex S193Astronomers from the Physical Research Laboratory in Ahmedabad, India and elsewhere, have inspected a star-forming complex known as S193, using multiwavelength observational data. Results of the study, published Sept. 21 on the pre-print server arXiv, shed more light on the properties of this complex.
Weiterlesen »
A satellite threatening to outshine the stars has astronomers worriedThe BlueWalker 3 is a shiny communications satellite the size of a highway billboard. More than a hundred even larger ones are planned
Weiterlesen »