Sentences with phrase «nearby pulsars»

But more mundane explanations are also plausible: Positrons might be spewed from nearby pulsars, the spinning remnants of exploded stars, for example.
The researchers then combined that information with a map of nearby pulsars to find — for the first time — the probability of a definitive detection over time.
«Thanks to its wide field of view, HAWC provides unique measurements on the very - high - energy gamma - ray profiles caused by the particle diffusion around nearby pulsars, which allows us to determine how fast the particles diffuse more directly than previous measurements,» says Hao Zhou, now a scientist at the Los Alamos National Laboratory in New Mexico and Michigan Tech alumnus.
This could be the result of dark matter being annihilated nearby, but might also be caused by nearby pulsars.
Three projects currently read the timing of radio waves arriving from nearby pulsars: the Parkes Pulsar Timing Array in Australia, North American Nanohertz Observatory for Gravitational Waves and the European Pulsar Timing Array.
HAWC researchers tested how positrons travel through space by measuring gamma rays, or high - energy light, from two nearby pulsars — Geminga and Monogem — around 900 light - years away.
The researchers observed FRB 150807 while monitoring a nearby pulsar — a rotating neutron star that emits a beam of radio waves and other electromagnetic radiation — in our galaxy using the Parkes radio telescope in Australia.
«This new measurement is tantalizing because it strongly disfavors the idea that these extra positrons are coming to Earth from two nearby pulsars, at least when you assume a relatively simple model for their propagation,» says Jordan Goodman, professor of physics at the University of Maryland and the lead investigator and US spokesperson for the HAWC collaboration.
«Our analysis does not support previous claims that the two nearby pulsars are responsible for the excess of positrons detected by two space - born telescopes, the Italian - lead PAMELA project and the AMS - 02 detector of NASA,» she says.
Using the most complete catalog of HAWC data to date, scientists have determined that the nearby pulsar Geminga and its unnamed sister are not sources of the positron excess.
The size of this stellar debris field, measured by the patch of sky that glows bright in gamma rays, tells researchers how quickly matter moves relative to a local astrophysical engine — in this case, the nearby pulsars.
Some theorists have attributed this strange excess to nearby pulsars — fast - spinning stellar remnants — but Hooper suspects that it comes from interactions between dark particles as they whip around the Milky Way.
If that's the case, any flashes from nearby pulsars would appear to speed up or slow down when viewed from Earth, with their clocklike arrival times running early or late and likely dependent on where their orbits were in relation to the black hole.
To find out whether the jets could be the result of a magnetic field produced by charged ions swirling around in the gas, Eatough and colleagues looked at a nearby pulsar.
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