Topic: Neutron Star
Pasadena, CA – NASA’s Nuclear Spectroscopic Telescope Array, or NuSTAR, is giving the wider astronomical community a first look at its unique X-ray images of the cosmos.
The first batch of data from the black-hole hunting telescope is publicly available today, August 29th, via NASA’s High Energy Astrophysics Science Archive Research Center, or HEASARC.
Pasadena, CA – NASA reports that Astronomers, including a team member from NASA’s Jet Propulsion Laboratory in Pasadena, CA, have detected the first population of radio bursts known to originate from galaxies beyond our own Milky Way.
The sources of the light bursts are unknown, but cataclysmic events, such as merging or exploding stars, are likely the triggers.
A radio burst is a quick surge of light from a point on the sky, made up of longer wavelengths in the radio portion of the light spectrum. A single radio burst was detected about six years ago, but researchers were unclear about whether it came from within or beyond our galaxy.
Pasadena, CA – NuSTAR has been busy studying the most energetic phenomena in the universe. Recently, a few high-energy events have sprung up, akin to “things that go bump in the night.”
When one telescope catches a sudden outpouring of high-energy light in the sky, NuSTAR and a host of other telescopes stop what they were doing and take a better look.
For example, in early April, the blazar Markarian 421 had an episode of extreme activity, brightening by more than 50 times its typical level. Blazars are a special class of galaxies with accreting, or “feeding,” supermassive black holes at their centers.
Written by Lori Keesey
Greenbelt, MD – Neutron stars have been called the zombies of the cosmos. They shine even though they’re technically dead, occasionally feeding on neighboring stars if they venture too close.
Interestingly, these unusual objects, born when a massive star extinguishes its fuel and collapses under its own gravity, also may help future space travelers navigate to Mars and other distant destinations.
Written by Whitney Clavin
Pasadena, CA – The aftershock of a stellar explosion rippling through space is captured in this new view of the supernova remnant called W44. The image combines longer-wavelength infrared and X-ray light captured by the European Space Agency’s Herschel and XMM-Newton space observatories.
NASA also plays an important role in the Herschel mission, with the U.S project office based at the agency’s Jet Propulsion Laboratory in Pasadena, CA.
NASA’s Swift Satellite detects high energy X-Rays which leads to discovery of New Black Hole in our Milky Galaxy
Written by Francis Reddy
Greenbelt, MD – NASA’s Swift satellite recently detected a rising tide of high-energy X-rays from a source toward the center of our Milky Way galaxy. The outburst, produced by a rare X-ray nova, announced the presence of a previously unknown stellar-mass black hole.
“Bright X-ray novae are so rare that they’re essentially once-a-mission events and this is the first one Swift has seen,” said Neil Gehrels, the mission’s principal investigator, at NASA’s Goddard Space Flight Center in Greenbelt, MD. “This is really something we’ve been waiting for.”
NASA’s Goddard Space Flight Center
Greenbelt, MD – This sparkling picture taken by the NASA/ESA Hubble Space Telescope shows the center of globular cluster M 4. The power of Hubble has resolved the cluster into a multitude of glowing orbs, each a colossal nuclear furnace.
M 4 is relatively close to us, lying 7200 light-years distant, making it a prime object for study. It contains several tens of thousands stars and is noteworthy in being home to many white dwarfs — the cores of ancient, dying stars whose outer layers have drifted away into space.
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