A Tale of Two Coronae: Solving the Mystery of the “Soft Excess”
March 26th, 2021
Astronomers are investigating the mystery of the “soft excess” of low-energy X-ray emission often seen from accreting supermassive black holes. This enigmatic component can carry a large fraction of the X-ray flux, but is poorly understood. Multiple theories have been suggested. Simultaneous observations with NuSTAR (at high energy X-rays) and XMM-Newton (at low-energy X-rays) provide a powerful combination to investigate its origin.
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Shredded star may have caused luminous X-ray transient in a galaxy far, far away
March 12th, 2021
A serendipitous X-ray flare detected by NASA’s Swift observatory is likely associated with a supermassive black hole at the core of a distant galaxy shredding a star that wandered too close.
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Reclusive Neutron Star May Have Been Found in Famous Supernova
February 23rd, 2021
What remains of the star that exploded just outside our galaxy in 1987? Debris has obscured scientists’ view, but two of NASA’s X-ray telescopes have revealed new clues.
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After-Flare Detected from Black Hole Dance
October 13th, 2020
NuSTAR detects after-flare caused by black hole crashing through the accretion disk of a more massive black hole.
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Measuring the masses of magnetic white dwarfs: A NuSTAR Legacy Survey
September 22nd, 2020
Astronomers have used NASA’s NuSTAR to weigh nearly two dozen extremely magnetic dead stars and found that they are heavier than expected.
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NuSTAR and XMM-Newton observe a dusty shroud sparkling in X-rays
September 15th, 2020
X-ray observations of a young massive star in a close orbit with the compact remnant of a collapsed star by NASA’s NuSTAR and ESA’S XMM-Newton satellites reveal properties of extreme stellar winds and improve our understanding of how stars evolve.
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September 4th, 2020
NuSTAR is seeking letters of self-nomination for people to rotate onto the NuSTAR Users' Committee (NUC). The NUC provides community advice and feedback to the project and NASA Headquarters, and helps ensure the interests of the guest investigator community are well-served by the project. Due date for self nomination letters is October 2nd, 2020.
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Hidden in Plain Sight: Monster Black Holes Found in Nearby Galaxies
July 29th, 2020
NASA’s NuSTAR satellite has observed the faintest growing supermassive black holes in our cosmic backyard, and found that some of them are actually luminous “monsters” hiding behind thick clouds of dust and gas.
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Runaway Star Might Explain Black Hole's Disappearing Act
July 16th, 2020
The telltale sign that the black hole was feeding vanished, perhaps when a star interrupted the feast. The event could lend new insight into these mysterious objects.
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NuSTAR's Reaches its 8th Launch Anniversary
June 19th, 2020
NuSTAR reached its 8th launch anniversary on June 13th, 2020
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A Cosmic Baby Is Discovered, and It's Brilliant
June 17th, 2020
Astronomers tend to have a slightly different sense of time than the rest of us. They regularly study events that happened millions or billions of years ago, and objects that have been around for just as long. That's partly why the recently discovered neutron star known as Swift J1818.0-1607 is remarkable: A new study in the journal Astrophysical Journal Letters estimates that it is only about 240 years old - a veritable newborn by cosmic standards.
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Monitoring the First Ultraluminous Pulsar
May 22nd, 2020
Bachetti and collaborators recently published a comprehensive, multi-year study of the pulsation history of M82 X-2, the first example of the new class of extremely luminous X-ray binary that NuSTAR discovered in 2014.
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Changes in a Neutron Star Binary Accretion Disk during Outburst
May 15th, 2020
Astronomers are observing the changes in the accretion disk around the neutron star X-ray binary 4U 1608-52. The system was tracked as it fades from outburst to quiescence by three NASA space telescopes, with NuSTAR observations suggesting that the disk puffs up and becomes transparent as the outburst fades.
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April 13th, 2020
An update to the NuSTAR data analysis software (NuSTARDAS) v1.9.2 was released with HEASoft patch v6.27.1 on April 13th, 2020. This NuSTARDAS update is required for analysis of observations performed after March 16th, 2020.
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NuSTAR operations nominal during COVID-19 crisis
March 29th, 2020
NuSTAR observatory operations are continuing during the COVID-19 pandemic with staff from the Science and Mission Operations Centers (Caltech and UC Berkeley) supporting the mission remotely.
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Found: Three Black Holes on Collision Course
September 26th, 2019
Astronomers have spotted three giant black holes within a titanic collision of three galaxies. The unusual system was captured by several observatories, including three NASA space telescopes.
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NASA Satellite Spots a Mystery That's Gone in a Flash
September 4th, 2019
NASA's NuSTAR X-ray observatory saw a flash of light that could be produced only by an extremely energetic event. Scientists are investigating what could have caused the flare.
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Black Hole Image Makes History
April 10th, 2019
A black hole and its shadow have been captured in an image for the first time, a historic feat by an international network of radio telescopes called the Event Horizon Telescope (EHT). EHT is an international collaboration whose support in the U.S. includes the National Science Foundation.
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In Colliding Galaxies, a Pipsqueak Shines Bright
February 20th, 2019
In the nearby Whirlpool galaxy and its companion galaxy, M51b, two supermassive black holes heat up and devour surrounding material. These two monsters should be the most luminous X-ray sources in sight, but a new study using observations from NASA's NuSTAR mission shows that a much smaller object is competing with the two behemoths.
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Holy Cow! Mysterious Blast Studied with NASA Telescopes
January 10th, 2019
A brief and unusual flash spotted in the night sky on June 16, 2018, puzzled astronomers and astrophysicists across the globe. The event - called AT2018cow and nicknamed "the Cow" after the coincidental final letters in its official name - is unlike any celestial outburst ever seen before, prompting multiple theories about its source.
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NuSTAR Paper Models at the Summer Skies Event
July 26th, 2018
On Thursday, July 26th, the Hudson River Museum was at Cross County Shopping Center, putting on a series of science projects as part of SummerFest on the Cross County Green. During the “Summer Skies” event, visitors participated in demonstrations and projects and created items to take home. They explored gravity and light, and made of a model of the NuSTAR space telescope.
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NASA's NuSTAR Mission Proves Superstar Eta Carinae Shoots Cosmic Rays
July 3rd, 2018
A new study using data from NASA's NuSTAR space telescope suggests that Eta Carinae, the most luminous and massive stellar system within 10,000 light-years of Earth, is accelerating particles to high energies - some of which may reach our planet as cosmic rays.
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Beaming with the Light of Millions of Suns
February 26th, 2018
A Caltech-led astronomy team is homing in on the nature of extreme objects known as ultraluminous X-ray sources.
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How Strong are Black Holes Really?
December 7th, 2017
Black holes are famous for their muscle: an intense gravitational pull known to gobble up entire stars and launch streams of matter into space at almost the speed of light. It turns out the reality may not live up to the hype. University of Florida scientists have discovered these tears in the fabric of the universe have significantly weaker magnetic fields than previously thought.
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NuSTAR Now Accepting Cycle 4 Proposals
November 20th, 2017
NASA has announced the fourth opportunity for scientists around the world to propose for observations using the NuSTAR X-ray space telescope. This Guest Observer (GO) Program is part of an extended mission plan approved by NASA that offers observing time for basic research investigations selected in a competitive process.
Proposals for observations to be made within the four cycle of the NuSTAR GO program are due on Jan 19, 2018.
Click through for more information.
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NuSTAR Probes Black Hole Jet Mystery
October 30th, 2017
Black holes are famous for being ravenous eaters, but they do not eat everything that falls toward them. A small portion of material gets shot back out in powerful jets of hot gas, called plasma, that can wreak havoc on their surroundings. Along the way, this plasma somehow gets energized enough to strongly radiate light, forming two bright columns along the black hole's axis of rotation. Scientists have long debated where and how this happens in the jet.
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NuSTAR to Observe Solar Eclipse
August 17th, 2017
On August 21, for about two minutes across a swath of North America, Earth's moon will pass in front of and completely block out the sun, causing a total solar eclipse. Countless people are expected to witness this rare phenomenon, the first total solar eclipse in North America in 38 years. Just this week, scientists at Caltech and JPL decided that a small space telescope will be watching with them.
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NuSTAR's First Five Years in Space
June 13th, 2017
To celebrate the fifth anniversary of NASA's NuSTAR space mission, the mission's lead scientist, Fiona Harrison of Caltech, talks about some of her favorite images.
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Merging Galaxies Have Enshrouded Black Holes
May 9th, 2017
Black holes get a bad rap in popular culture for swallowing everything in their environments. In reality, stars, gas and dust can orbit black holes for long periods of time, until a major disruption pushes the material in.
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NuSTAR Probes Puzzling Galaxy Merger
March 27th, 2017
A supermassive black hole inside a tiny galaxy is challenging scientists' ideas about what happens when two galaxies become one. Thanks to NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) mission, scientists have discovered that the dwarf galaxy is so luminous in high-energy X-rays, it must host a supermassive black hole much larger and more powerful than expected.
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