Gamma Rays Current Events

Gamma Rays Current Events, Gamma Rays News Articles.
Sort By: Most Viewed | Most Recent
Page 1 of 25 | 1000 Results
NASA's fermi finds possible dark matter ties in andromeda galaxy
NASA's Fermi Gamma-ray Space Telescope has found a signal at the center of the neighboring Andromeda galaxy that could indicate the presence of the mysterious stuff known as dark matter. The gamma-ray signal is similar to one seen by Fermi at the center of our own Milky Way galaxy. (2017-02-21)

APS tip sheet: correlating matter's distribution in the universe with gamma rays
Scientists present the first direct cross-correlation between dark matter and gamma ray emissions. (2020-03-10)

Zeroing in on a source of gamma rays
Gamma rays are the highest-energy form of radioactive waves known in the universe. However, how they're made and where they come from have been a bit of a mystery. But now a team of researchers, led by Michigan State University astronomer Laura Chomiuk, has made a discovery that may shed some light on the subject. (2014-10-08)

Going to Mercury? Don't leave home without a NIST calibration
MESSENGER, the first spacecraft intended to orbit Mercury was launched on Aug. 3, 2004, carrying an instrument for mapping the composition of the planet's crust that was calibrated with a novel procedure at the National Institute of Standards and Technology (NIST). The procedure, using NIST-produced, high-energy gamma rays, enabled the device to be prepared for the same intense radiation levels typically produced in outer space. (2004-08-13)

Possible origin of cosmic rays revealed with gamma rays
An international team of astronomers has produced the first ever image of an astronomical object using high energy gamma rays, helping to solve a 100 year old mystery - an origin of cosmic rays. (2004-11-03)

Moon glows brighter than sun in images from NASA's Fermi
If our eyes could see gamma rays, the Moon would appear brighter than the Sun! That's how NASA's Fermi Gamma-ray Space Telescope has seen our neighbor in space for the past decade. (2019-08-15)

VERITAS detects gamma rays from galaxy halfway across the visible universe
In April 2015, after traveling for about half the age of the universe, a flood of powerful gamma rays from a distant galaxy slammed into Earth's atmosphere. That torrent generated a cascade of light -- a shower that fell onto the waiting mirrors of the Very Energetic Radiation Imaging Telescope Array System (VERITAS) in Arizona. The resulting data have given astronomers a unique look into that faraway galaxy and the black hole engine at its heart. (2015-12-15)

Searching the heavens
A new space mission, due to launch this month, is going to shed light on some of the most extreme astrophysical processes in nature -- including pulsars, remnants of supernovae, and supermassive black holes. It could even help us comprehend the origin and distribution of dark matter, write three scientists currently preparing for the GLAST mission from NASA's Goddard Space Flight Center in Greenbelt, Md., USA, in this month's Physics World. (2008-05-01)

The highest energy gamma rays discovered by the Tibet ASgamma experiment
The Tibet ASgamma experiment, a China-Japan joint research project, has discovered the highest energy cosmic gamma rays ever observed from an astrophysical source - in this case, the 'Crab Nebula.' The experiment detected gamma rays ranging from > 100 Teraelectron volts (TeV) to an estimated 450 TeV. (2019-07-03)

Study finds metal foams capable of shielding X-rays, gamma rays, neutron radiation
Research shows lightweight composite metal foams are effective at blocking X-rays, gamma rays and neutron radiation, and are capable of absorbing the energy of high impact collisions. The finding means metal foams hold promise for use in nuclear safety, space exploration and medical technology applications. (2015-07-17)

NASA's Firestation on way to the International Space Station
An experiment to study the effects of lightning flashes on Earth's atmosphere hitched a ride to the International Space Station on Aug. 3, 2013. The Firestation experiment launched aboard a Japan Aerospace Exploration Agency's transfer vehicle called Kounotori-4. Firestation will be installed robotically to the outside of the space station, a process that will take about three weeks. (2013-08-05)

NASA's Fermi closes on source of cosmic rays
New images from NASA's Fermi Gamma-ray Space Telescope show where supernova remnants emit radiation a billion times more energetic than visible light. The images bring astronomers a step closer to understanding the source of some of the universe's most energetic particles -- cosmic rays. (2010-02-16)

Star packs big gamma-ray jolt, researchers discover
In the center of the Crab Nebula, the Crab Pulsar, a spinning neutron star left over when a supernova exploded, is pulsing out gamma rays with energies never seen before -- above one hundred thousand million electron volts, according to an international scientific team that includes researchers from the University of Delaware. (2011-10-09)

Iowa State researchers contribute to discovery of gamma rays from starburst galaxy
Iowa State University researchers have contributed to the discovery of high-energy gamma rays coming from a galaxy that's quickly creating new stars. The discovery has just been published in the journal Nature. A key to the research is the VERITAS telescope system that Iowa State researchers helped build. (2009-11-02)

Influx of earth-bound positrons must have exotic origin, study suggests
The excess positrons arriving at Earth must have a more exotic origin than nearby pulsars, report researchers. (2017-11-16)

Gamma-ray bursts
Astronomers at Rice University in Houston have discovered that the rate at which a gamma-ray burst cools might be used to calculate the distance of that burst. But this technique works only on gamma-ray bursts that have separable pulses, or peaks, of intensity. (2002-01-07)

Laser blasting antimatter into existence
Antimatter is an exotic material that vaporizes when it contacts regular matter. If you hit an antimatter baseball with a bat made of regular matter, it would explode in a burst of light. It is rare to find antimatter on Earth, but it is believed to exist in the furthest reaches of the universe. Amazingly, antimatter can be created out of thin air... (2018-11-05)

Detection of gamma rays from a newly discovered dwarf galaxy may point to dark matter
A newly discovered dwarf galaxy orbiting our own Milky Way has offered up a surprise -- it appears to be radiating gamma rays, according to an analysis by physicists at Carnegie Mellon, Brown, and Cambridge universities. The exact source of this high-energy light is uncertain at this point, but it just might be a signal of dark matter lurking at the galaxy's center. (2015-08-18)

Astrophysicists solve mystery in Milky Way galaxy
A team of astrophysicists has solved a mystery that led some scientists to speculate that the distribution of certain gamma rays in our Milky Way galaxy was evidence of a form of undetectable (2009-07-08)

Radio telescopes unravel mystery of nova gamma rays
Highly-detailed radio-telescope images have pinpointed the locations where a stellar explosion called a nova emitted gamma rays. The discovery revealed a probable mechanism for the gamma-ray emissions, which mystified astronomers when first observed in 2012. (2014-10-08)

Tracking the riddle of cosmic gamma rays
First simultaneous observation of a gamma-ray burst in the X-ray and in the very high energy gamma ray band. (2005-08-23)

ESA's Integral solves thirty-year old gamma-ray mystery
ESA's Integral gamma-ray observatory has resolved the diffuse glow of gamma rays in the centre of our Galaxy and has shown that most of it is produced by a hundred individual sources. (2004-03-18)

NASA's Fermi telescope probes dozens of pulsars
With NASA's Fermi Gamma-ray Space Telescope, astronomers now are getting their best look at those whirling stellar cinders known as pulsars. In two studies published in the July 2 edition of Science Express, international teams have analyzed gamma-rays from two dozen pulsars, including 16 discovered by Fermi. Fermi is the first spacecraft able to identify pulsars by their gamma-ray emission alone. (2009-07-06)

Quasar outburst revises understanding of universe, quasars
An outburst from a distant quasar known as PKS 1441+25 in April of this year gave astronomers at the gamma-ray telescope VERITAS an opportunity to measure the density of the optical 'fog' that lies between the quasar and Earth and to deduce the surprising separation of the high-energy emission from the black hole that drives it. (2015-12-15)

Florida Tech professors present 'dark side of dark lightning' at conference
Florida Institute of Technology faculty presented their terrestrial gamma ray flashes research modeling work at a press conference meeting of the European Geosciences Union in Vienna, Austria, April 10. (2013-04-10)

Researchers develop method to non-destructively measure the salt content of concrete structures
Researchers have used a method, using the RANS compact neutron source, to non-destructively measure the salt content of structures such as bridges, tunnels, and elevated roadways, which can suffer from degradation due to exposure to salt from seawater and other sources. (2018-12-20)

Visualizing nuclear radiation
Extraordinary decontamination efforts are underway in areas affected by the 2011 nuclear accidents in Japan. The creation of total radioactivity maps is essential for thorough cleanup, but the most common methods do not 'see' enough ground-level radiation. (2017-03-22)

VERITAS telescopes help solve 100-year-old mystery: The origin of cosmic rays
Nearly 100 years ago, scientists detected the first signs of cosmic rays -- subatomic particles that zip through space at nearly the speed of light. The most energetic cosmic rays hit with the punch of a 98-mph fastball, even though they are smaller than an atom. Astronomers questioned what force could accelerate particles to such a speed. New evidence from the VERITAS telescopes shows that cosmic rays likely are powered by exploding stars and stellar (2009-11-02)

The cosmic ray gun duel of Eta Carinae
An international collaboration operating NASA's NuSTAR satellite has revealed that two of the biggest stars in the galaxy are capable of creating cosmic rays. Their results were published in Nature Astronomy this month. (2018-07-29)

Physicists find evidence for highest energy photons ever detected from Milky Way's equator
Physicists at nearly a dozen research institutions, including New York University, have discovered evidence for very high energy gamma rays emitting from the Milky Way, marking the highest energies ever detected from the galactic equator. Their findings, published in the Dec. 16 issue of the Physical Review of Letters, were obtained using the Milagro Gamma Ray Observatory, a new detector located near Los Alamos, N.M., that allows monitoring of the northern sky on a 24-hour, 7-day-per-week basis. (2005-12-14)

Iowa State astrophysicists provide the eyes for new gamma ray telescope system
Iowa State University researchers built the four cameras for the VERITAS telescope system in Arizona. The new $20 million telescope system detects gamma rays and will help astrophysicists explore distant regions of space, look for evidence of dark matter and help explain the origins of the most energetic radiation in the universe. (2007-04-19)

ESA steps towards a great black hole census
Astronomers using ESA's orbiting gamma-ray observatory, Integral, have taken an important step towards estimating how many black holes there are in the Universe. (2006-09-07)

Crab pulsar dazzles astronomers with its gamma-ray beams
A thousand years ago, a brilliant beacon of light blazed in the sky, shining brightly enough to be seen even in daytime for almost a month. Native-American and Chinese observers recorded the eye-catching event. We now know that they witnessed an exploding star, which left behind a gaseous remnant known as the Crab Nebula. The same object that dazzled skygazers in 1054 C.E. continues to dazzle astronomers today by pumping out radiation at higher energies than anyone expected. (2011-10-06)

NASA's Fermi detects the highest-energy light from a solar flare
During a powerful solar blast on March 7, NASA's Fermi Gamma-ray Space Telescope detected the highest-energy light ever associated with an eruption on the sun. The discovery heralds Fermi's new role as a solar observatory, a powerful new tool for understanding solar outbursts during the sun's maximum period of activity. (2012-06-11)

Starburst galaxy sheds light on longstanding cosmic mystery
An international collaboration that includes scientists from the University of Delaware's Bartol Research Institute in the Department of Physics and Astronomy has discovered very-high-energy gamma rays in the Cigar Galaxy (M82), a bright galaxy filled with exploding stars 12 million light years from Earth. The gamma rays observed by the team are the highest-energy photons ever detected from a galaxy undergoing large amounts of star formation and point to the origins of cosmic rays. (2009-11-02)

NASA's Fermi measures cosmic 'fog' produced by ancient starlight
Astronomers using data from NASA's Fermi Gamma-ray Space Telescope have made the most accurate measurement of starlight in the universe and used it to establish the total amount of light from all of the stars that have ever shone, accomplishing a primary mission goal. (2012-11-01)

Active galaxies flare and fade in Fermi telescope all-sky movie
The gamma-ray sky comes alive in a movie made from data acquired by NASA's Fermi Gamma-ray Space Telescope during its first three months of operations. Gamma rays from sources near and far turn the sky into a hypnotic froth. The sun arcs serenely across the northern sky as active galaxies called blazars flare up and fade out. (2009-04-24)

Astronomers find rare beast by new means
Astronomers have found an example of the rare type of supernova thought to produce Gamma Ray Bursts, but through radio, not gamma-ray, observations. The breakthrough, they say, will lead to discovering many more of these objects. (2010-01-27)

Waltzing With A Black Hole: Model Shows How Star May Trigger Bursts Of Radiation
University of Wisconsin-Madison physicists have created a model that seeks to explain a conundrum of modern astrophysics -- the origin of mysterious bursts of gamma rays that appear uniformly across the sky on an average of once a day. (1997-09-19)

Crab pulsar emits light at higher energies than expected
Pulsars -- highly magnetized, rotating stars -- were first discovered more than 40 years ago, and are now believed to be a type of stellar leftover, or remnant -- in this case, a neutron star -- that results from the explosion and gravitational collapse of a more massive star. In the Oct. 7 issue of Science, astrophysicists with VERITAS report an unexpected finding in the Crab Pulsar, which is the central star in the Crab Nebula in the constellation of Taurus. (2011-10-11)

Page 1 of 25 | 1000 Results
   First   Previous   Next      Last   
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.