Tag Archive for 'Neutron star'

An artist’s impression of the SGR 1935+2154 magnetar in outburst, showing complex magnetic field structure and beamed emission. Image credit: McGill University Graphic Design Team.

Fast Radio Burst Detected from Magnetar in Milky Way

Nov 9, 2020 by News Staff

Astronomers using the CHIME (Canadian Hydrogen Intensity Mapping Experiment) and FAST (Five-hundred-meter Aperture Spherical radio Telescope) telescopes...

This X-ray image, taken by NASA’s Chandra X-ray Observatory, shows GW170817. The central panel shows the stacked image of the field, with total exposure of 783 ks. The position of GW170817 is marked. In addition, several X-ray point sources as well as extended diffuse X-ray emissions are visible. The image stamps are centered on the location of GW170817, showing the main phases of its evolution. Image credit: Troja et al., doi: 10.1093/mnras/staa2626.

Astronomers Detect Prolonged X-Ray Emission from Neutron-Star Merger

Oct 14, 2020 by News Staff

In 2017, astronomers detected a gravitational-wave signal, designated GW170817, from the merger of two neutron stars. And since the detection, they have...

This Chandra/ACIS-S image shows XRSs (colored points) in Messier 51; M51-ULS-1 is the orange source in the center of the blue box; diffuse emission is from hot gas. Image credit: Di Stefano et al., arXiv: 2009.08987.

Chandra Spots Possible Extragalactic Planet in Messier 51

Oct 2, 2020 by Natali Anderson

Astronomers using NASA’s Chandra X-ray Observatory have detected an extragalactic candidate planet circling a binary system in Messier 51 (also known...

An artist’s impression of a stellar-mass black hole surrounded by a disk of gas and plasma gravitationally pulled from a close binary star companion. Image credit: NASA / CXC / M. Weiss.

Astrophysicists Suggest New Way to Detect Stellar-Mass Black Holes

Sep 22, 2020 by Sergio Prostak

An analysis of archival X-ray data from NASA’s Rossi X-Ray Timing Explorer has revealed a clear separation between the characteristics of stellar-mass...

An artist’s impression of a magnetar emitting a burst of radiation. Image credit: Sophia Dagnello, NRAO / AUI / NSF.

Astronomers Precisely Measure Distance to Magnetar

Sep 18, 2020 by News Staff

Using NSF’s Very Long Baseline Array, an international team of astronomers has made the direct geometric measurement of the distance to XTE J1810-197,...

An artist’s illustration of SN 1987A. Image credit: NRAO / AUI / NSF / B. Saxton.

ALMA May Have Found Neutron Star in Supernova Remnant SN 1987A

Jul 31, 2020 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have found new evidence that a very young neutron star is hiding deep inside...

The afterglow of GRB 181123B (marked with a circle), captured by the Gemini-North telescope. Image credit: Gemini Observatory / NOIRLab / NSF / AURA / K. Paterson & W. Fong, Northwestern University / Travis Rector, University of Alaska Anchorage / Mahdi Zamani / Davide de Martin.

Short Gamma-Ray Burst Localized to Extremely Distant Galaxy

Jul 16, 2020 by News Staff

An international of astronomers has observed an optical afterglow of a short gamma-ray burst, thought to be from the merger of two neutron stars, and localized...

An artist’s rendition of a mystery compact object in ‘mass gap’ found by LIGO and Virgo gravitational wave detectors. Image credit: LIGO / Caltech / MIT / R. Hurt, IPAC.

GW190814 Sheds Light on Mass Gap between Neutron Stars and Black Holes

Jun 25, 2020 by News Staff

The gravitational-wave signal GW190814, detected on August 14, 2019 by NSF’s Laser Interferometer Gravitational-Wave Observatory (LIGO) and the Virgo...

This image from the eROSITA X-ray telescope shows the energetic Universe. As eROSITA scans the sky, the energy of the collected photons is measured with an accuracy ranging from 2% - 6%. To generate this image, in which the whole sky is projected onto an ellipse (so-called Aitoff projection) with the center of the Milky Way in the middle and the body of our Galaxy running horizontally, photons have been color-coded according to their energy (red for energies 0.3-0.6 keV, green for 0.6-1 keV, blue for 1-2.3 keV). The red diffuse glow away from the galactic plane is the emission of the hot gas in the vicinity of the Solar System (the Local Bubble). Along the plane itself, dust and gas absorb the lowest energy X-ray photons, so that only high-energy emitting sources can be seen, and their color appears blue in the image. The hotter gas close to the Galactic center, shown in green and yellow, carries imprinted the history of the most energetic processes in the life of the Milky Way, such as supernova explosions, driving fountains of gas out of the plane, and, possibly, past outburst from the now dormant supermassive black hole in the center of the Milky Way. Piercing through this turbulent, hot diffuse medium, are hundreds of thousands of X-ray sources, which appear mostly white in the image, and uniformly distributed over the sky. Among them, distant active galactic nuclei are visible as point sources, while clusters of galaxies reveal themselves as extended X-ray nebulosities. In total, about one million X-ray sources have been detected in this image. Image credit: Jeremy Sanders, Hermann Brunner & the eSASS team / Max Planck Institute for Extraterrestrial Physics / Eugene Churazov & Marat Gilfanov, IKI.

eROSITA X-Ray Telescope Captures Hot, Energetic Universe

Jun 19, 2020 by News Staff

A new all-sky image from the eROSITA X-ray telescope onboard the Spectrum-Roentgen-Gamma (SRG) space observatory contains over one million objects, about...

An artist’s impression of a magnetar. Image credit: ESA.

Astronomers Discover Youngest Magnetar Ever

Jun 18, 2020 by News Staff

Using NASA’s Neil Gehrels Swift Observatory, ESA’s XMM-Newton observatory, NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR), and ground-based...

An artist’s impression of an ultraluminous X-ray pulsar. Image credit: NASA / JPL-Caltech.

Astronomers Find Ultraluminous X-Ray Pulsar in Magellanic Bridge

Jun 8, 2020 by Enrico de Lazaro

Astronomers using ISRO’s AstroSat space observatory have detected a very rare ultraluminous X-ray source in the Magellanic Bridge, a 43,000-light-year-long...

Neutron Star Cores May Contain Exotic Quark Matter

Jun 2, 2020 by News Staff

Massive neutron stars have sizable quark-matter cores, according to a study published in the journal Nature Physics. An artist’s conception of a massive...

The collision of two black holes. Image credit: Simulating eXtreme Spacetimes Project.

Astronomers Propose New Mechanism for Growth of Supermassive Black Hole Seeds

Mar 24, 2020 by Enrico de Lazaro

In a paper published in the Astrophysical Journal, a team of astronomers in Italy proposes that heavy seeds of supermassive black holes formed via the...

Physicists Probe Core of Strong Nuclear Interaction between Protons and Neutrons

Feb 27, 2020 by News Staff

The strong force is one of the four fundamental forces of nature, which also include gravity, electromagnetism and the weak nuclear force. The strong force...

An artist’s depiction of a rapidly spinning neutron star and a white dwarf dragging the fabric of spacetime around its orbit. Image credit: Mark Myers, OzGrav ARC Centre of Excellence.

Exotic Binary System Confirms Relativistic Frame-Dragging

Jan 31, 2020 by News Staff

An international team of astronomers has found exciting new evidence for Lense-Thirring precession — an effect of relativistic frame-dragging —...

Astronomers Measure Size and Mass of Nearby Pulsar, Create Map of Its Surface Hot Spots

Dec 17, 2019 by News Staff

Using the X-ray data from NASA’s Neutron star Interior Composition Explorer (NICER), astronomers have produced a map of hot spots on the surface of a...

A thermonuclear blast on a pulsar called SAX J1808.4-3658 resulted in the brightest burst of X-rays seen to date by NASA’s Neutron star Interior Composition Explorer. Image credit: NASA’s Goddard Space Flight Center.

NICER Detects Thermonuclear Burst from X-Ray Pulsar

Nov 8, 2019 by News Staff

NASA’s Neutron star Interior Composition Explorer (NICER) has detected an extremely energetic explosion called a Type I X-ray burst from SAX J1808.4-3658,...

An artist’s rendition of a giant star in orbit around a low-mass black hole. Image credit: Sci-News.com.

New Class of Low-Mass Black Holes May Exist, Astronomers Say

Nov 1, 2019 by News Staff

In a paper published in the November 1, 2019 issue of the journal Science, a team of astronomers offers a new way to search for stellar-mass black holes,...

Freshly-Synthesized Strontium Detected in Neutron Star Merger

Oct 23, 2019 by News Staff

Astronomers using ESO’s Very Large Telescope (VLT) have detected a freshly made heavy element, strontium, in the aftermath of GW170817, a merger of two...

Astronomers Find Most Massive Neutron Star Ever Discovered

Sep 17, 2019 by News Staff

Astronomers using NSF’s Green Bank Telescope have identified a record breaking neutron star with the highest mass yet known. The object, called MSP J0740+6620,...

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