Current Pulsars News and Events

Current Pulsars News and Events, Pulsars News Articles.
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Reclusive neutron star may have been found in famous supernova
Since astronomers captured the bright explosion of a star on February 24, 1987, researchers have been searching for the squashed stellar core that should have been left behind. A group of astronomers using data from NASA space missions and ground-based telescopes may have finally found it. (2021-02-23)

NANOGrav finds possible 'first hints' of low-frequency gravitational wave background
In data gathered and analyzed over 13 years, the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) Physics Frontiers Center (PFC) has found an intriguing low-frequency signal that may be attributable to gravitational waves. (2021-02-04)

Astronomers spot bizarre activity from one of the strongest magnets in the Universe
Astronomers from the ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav) and CSIRO have just observed bizarre, never-seen-before behaviour from a 'radio-loud' magnetar--a rare type of neutron star and one of the strongest magnets in the Universe. Their new findings, published today in the Monthly Notices of the Royal Astronomical Society (MNRAS), suggest magnetars have more complex magnetic fields than previously thought - which may challenge theories of how they are born and evolve over time. (2021-02-01)

Study: X-Rays surrounding 'Magnificent 7' may be traces of sought-after particle
A new study, led by a theoretical physicist at Berkeley Lab, suggests that never-before-observed particles called axions may be the source of unexplained, high-energy X-ray emissions surrounding a group of neutron stars. (2021-01-15)

'Galaxy-sized' observatory sees potential hints of gravitational waves
Scientists believe that planets like Earth bob in a sea of gravitational waves that spread throughout the universe. Now, an international team has gotten closer than ever before to detecting those cosmic ripples. (2021-01-11)

Measurements of pulsar acceleration reveal Milky Way's dark side
It is well known that the expansion of the universe is accelerating due to a mysterious dark energy. Within galaxies, stars also experience an acceleration, though this is due to some combination of dark matter and the stellar density. In a new study to be published in Astrophysical Journal Letters researchers have now obtained the first direct measurement of the average acceleration taking place within our home galaxy, the Milky Way. (2021-01-11)

Arecibo observatory helps find possible 'first hints' of low-frequency gravitational waves
Data from Arecibo Observatory in Puerto Rico has been used to help detect the first possible hints of low-frequency disturbances in the curvature of space-time. The results were presented today at the 237th meeting of the American Astronomical Society, which was held virtually, and are published in The Astrophysical Journal Letters (2021-01-11)

Chandra studies extraordinary magnetar
In 2020, astronomers added a new member to an exclusive family of exotic objects with the discovery of a magnetar. New observations from NASA's Chandra X-ray Observatory help support the idea that it is also a pulsar, meaning it emits regular pulses of light. (2021-01-08)

Scientists complete yearlong pulsar timing study after reviving dormant radio telescopes
While the scientific community grapples with the loss of the Arecibo radio telescope, astronomers who revived a long-dormant radio telescope array in Argentina hope it can help compensate for the work Arecibo did in pulsar timing. Last year, scientists at Rochester Institute of Technology and the Instituto Argentino de Radioastronom­ia (IAR) began a pulsar timing study using two upgraded radio telescopes in Argentina. They are releasing observations from the first year in a new study. (2020-12-21)

Multi-messenger astronomy offers new estimates of neutron star size and universe expansion
Multi-messenger astronomy allows researchers to put new constraints on the radius of a typical neutron star and provide a novel calculation of the Hubble constant. (2020-12-17)

Research suggests our galaxy's brightest gamma-ray binary system may be powered by a magnetar star
A research team led by Kavli IPMU graduate student Hiroki Yoneda has shed new night on the massive star and its neutron star companion, which are thought to be at the core of the gamma-ray binary system LS 5039. (2020-12-02)

Cosmic flashes come in all different sizes
By studying the site of a spectacular stellar explosion seen in April 2020, a Chalmers-led team of scientists have used four European radio telescopes to confirm that astronomy's most exciting puzzle is about to be solved. Fast radio bursts, unpredictable millisecond-long radio signals seen at huge distances across the universe, are generated by extreme stars called magnetars - and are astonishingly diverse in brightness. (2020-11-16)

FAST reveals mystery of fast radio bursts from the universe
The Five-hundred-meter Aperture Spherical Radio Telescope (FAST) has revealed some mystery of the fast radio bursts, according to a study published in Nature on Oct. 28. (2020-11-04)

Researchers find "missing link" between magnetars and rotation-powered pulsars
Researchers from the RIKEN Cluster for Pioneering Research have made observations of a new magnetar, called Swift J1818.0-1607, which challenges current knowledge about two types of extreme stars, known as magnetars and pulsars. (2020-10-08)

VLBA makes first direct distance measurement to magnetar
Using the VLBA, astronomers have made the first direct geometric measurement of the distance to a magnetar. This precision measurement to one of the most magnetic objects in the Universe could help scientists determine if such objects are responsible for generating the mysterious Fast Radio Bursts. (2020-09-18)

Microscopic deformation of a neutron star inferred from a distance of 4500 light-years
Gravitational waves, which are ripples in spacetime, have recently provided a new window to the universe. But continuous gravitational waves, for example from a slightly deformed and spinning neutron star, a star which is incredibly dense, have so far not been detected. A recent research work by Prof. Sudip Bhattacharyya has inferred continuous gravitational waves from a neutron star and has estimated the stellar microscopic deformation from a distance of about 4500 light-years. (2020-08-20)

To find giant black holes, start with Jupiter
On a quest to find the Universe's largest black holes, Vanderbilt researcher identifies the center of the solar system within 100 meters. (2020-06-30)

Why pulsars shine bright: A half-century-old mystery solved
Pulsars act like stellar lighthouses, shooting beams of radio waves from their magnetic poles. The cause of those beams has remained a mystery for more than 50 years. Now, a team of researchers suspects that they've finally identified the mechanism responsible: Newborn particles interact with the stars' powerful electromagnetic fields, generating intense radio emissions, the team's simulations suggest. The discovery could aid projects that rely on pulsar emissions, such as studies of gravitational waves. (2020-06-15)

Next-gen laser facilities look to usher in new era of relativistic plasmas research
Chirped pulse amplification increases the strength of laser pulses in many of today's highest-powered research lasers, and as next-generation laser facilities look to push beam power, physicists expect a new era for studying plasmas. Researchers have released a study in Physics of Plasmas taking stock of what upcoming high-power laser capabilities are poised to teach us about relativistic plasmas subjected to strong-field quantum electrodynamics processes and introducing the physics of relativistic plasma in supercritical fields. (2020-05-26)

An eclipsing binary millisecond pulsar discovered by FAST
Using the data obtained by the Five-hundred-meter Aperture Spherical radio Telescope (FAST), a research team led by Professor PAN Zhichen and Prof. LI Di from the National Astronomical Observatories of the Chinese Academy of Sciences (NAOC) discovered an eclipsing binary millisecond pulsar in Globular Cluster (GC) Messier 92 (M92). (2020-04-24)

Astronomers witness the dragging of space-time in stellar cosmic dance
An international team of astrophysicists led by Australian Professor Matthew Bailes, from the ARC Centre of Excellence of Gravitational Wave Discovery (OzGrav), has shown exciting new evidence for 'frame-dragging'-- how the spinning of a celestial body twists space and time -- after tracking the orbit of a stellar pair for almost two decades. The data, which is further evidence for Einstein's theory of General Relativity, is published today (Jan. 31, 2020) in the prestigious journal, Science. (2020-01-30)

Galactic gamma-ray sources reveal birthplaces of high-energy particles
Nine sources of extremely high-energy gamma rays comprise a new catalog compiled by researchers with the High-Altitude Water Cherenkov (HAWC) Gamma-Ray Observatory. All produce gamma rays with energies over 56 trillion electron volts (TeV) and three emit gamma rays extending to 100 TeV and beyond, making these the highest-energy sources ever observed in our galaxy. The catalog helps to explain where the particles originate and how they are accelerated to such extremes. (2020-01-14)

APS tip sheet: High energy gamma rays
Nine Galactic sources are the highest-energy gamma -ray sources ever detected, which could suggest the presence of Galactic accelerators. (2020-01-13)

NASA's Fermi Mission links nearby pulsar's gamma-ray 'halo' to antimatter puzzle
NASA's Fermi Gamma-ray Space Telescope has discovered a faint but sprawling glow of high-energy light around a nearby pulsar. If visible to the human eye, this gamma-ray 'halo' would appear about 40 times bigger in the sky than a full Moon. (2019-12-19)

RIT and IAR observe pulsars for the first time from South America
A team from RIT and the Instituto Argentino de RadioastronomĂ­a (IAR) upgraded two radio telescopes in Argentina that lay dormant for 15 years in order to study pulsars, rapidly rotating neutron stars with intense magnetic fields that emit notably in radio wavelengths. The project is outlined in a new paper published in Astronomy and Astrophysics. (2019-12-17)

NASA's NICER delivers best-ever pulsar measurements, 1st surface map
Astrophysicists are redrawing the textbook image of pulsars (the dense, whirling remains of exploded stars) thanks to NICER, an X-ray telescope aboard the International Space Station. NICER data has provided the first precise and dependable measurements of both a pulsar's size and its mass, and the first-ever map of hot spots on its surface. (2019-12-12)

APS tip sheet: Dark matter's galactic emissions and game theory of vaccination
The APS Tip Sheet highlights noteworthy research recently published in the Physical Review Journals. Unless otherwise noted, Physical Review papers are not embargoed. Please contact media@aps.org for media inquiries and complimentary access to the journals. (2019-12-11)

Russian astrophysicists discovered a neutron star with an unusual magnetic field structure
Russian scientists discovered a unique neutron star, the magnetic field of which is apparent only when the star is seen under a certain angle relative to the observer. The neutron star GRO J2058+42 studied by the researchers offers an insight into the internal structure of neutron star's magnetic field only at a certain phase of its rotational period. (2019-12-09)

NASA's NICER catches record-setting X-ray burst
On Aug. 20, 2019 NASA's NICER telescope saw a spike of X-rays from a massive explosion on a pulsar. It's the brightest X-ray burst NICER has seen so far and shows phenomena that have never been seen together in a single burst. (2019-11-07)

WVU astronomers help detect the most massive neutron star ever measured
West Virginia University researchers have helped discover the most massive neutron star to date, a breakthrough uncovered through the Green Bank Telescope. The neutron star, called J0740+6620, is a rapidly spinning pulsar that packs 2.17 times the mass of the sun (which is 333,000 times the mass of the Earth) into a sphere only 20-30 kilometers, or about 15 miles, across. (2019-09-16)

Most massive neutron star ever detected, almost too massive to exist
Astronomers using the GBT have discovered the most massive neutron star to date, a rapidly spinning pulsar approximately 4,600 light-years from Earth. This record-breaking object is teetering on the edge of existence, approaching the theoretical maximum mass possible for a neutron star. (2019-09-16)

Astrophysicists link brightening of pulsar wind nebula to pulsar spin-down rate transition
Astrophysicists have discovered that the pulsar wind nebula (PWN) surrounding the famous pulsar B0540-69 brightened gradually after the pulsar experienced a sudden spin-down rate transition (SRT). This discovery, made by a group of astrophysicists led by GE Mingyu and LU Fangjun at the Institute of High Energy Physics of the Chinese Academy of Sciences, provides important clues to the spin-down mechanism and the magnetic field structure of the pulsar, as well as the physical properties of the PWN. (2019-08-26)

Glitch in neutron star reveals its hidden secrets
Neutron stars are not only the most dense objects in the Universe, but they rotate very fast and regularly. Until they don't. (2019-08-12)

NICER's night moves trace the X-ray sky
This is a map of the entire sky in X-rays recorded by NASA's Neutron star Interior Composition Explorer (NICER), a payload on the International Space Station. (2019-05-30)

The science and technology of FAST
The Five hundred-meter Aperture Spherical radio Telescope (FAST), located in a radio quiet zone, with the targets (e.g., radio pulsars and neutron stars, galactic and extragalactic 21-cm HI emission). Now, FAST has already been completely tested and achieved the acceptance indices. In this special topic, we present a comprehensive review of FAST, from the dish to the receiver and the data systems; in addition, several scientific achievements obtained by FAST have also been discussed. (2019-05-17)

NASA's Fermi Satellite clocks 'cannonball' pulsar speeding through space
Astronomers have found a runaway pulsar hurtling through space at nearly 2.5 million miles an hour -- so fast it could travel the distance between Earth and the Moon in just 6 minutes. (2019-03-19)

Astronomers find 'cannonball pulsar' speeding through space
VLA image shows the trail of a speeding pulsar pointing directly back at the center of the debris shell from the supernova that created it. (2019-03-19)

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)

A stellar achievement: Magnetized space winds in the laboratory
New insights have been gained about stellar winds, streams of high-speed charged particles called plasma that blow through interstellar space. These winds, created by eruptions from stars or stellar explosions, carry with them strong magnetic fields which can interact with or effect other magnetic fields, such as those that surround planets like Earth. To understand these processes, researchers are employing laboratory experiments to study magnetic flows up close. (2018-11-05)

New simulation sheds light on spiraling supermassive black holes
A new model is bringing scientists a step closer to understanding the kinds of light signals produced when two supermassive black holes, which are millions to billions of times the mass of the Sun, spiral toward a collision. For the first time, a new computer simulation that fully incorporates the physical effects of Einstein's general theory of relativity shows that gas in such systems will glow predominantly in ultraviolet and X-ray light. (2018-10-02)

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