Tag Archive for 'Magnetic field'

The 200-m-wide crater at the Domaine du Météore-vineyard in France. Image credit: Frank Brenker, Goethe University Frankfurt.

Ancient Impact Crater Discovered in France

Feb 22, 2023 by Enrico de Lazaro

The ancient crater, formally known as ‘le Clot,’ is about 220 m in diameter and 30 m in depth, and is located in the ground of the Domaine du Meteore-vineyard...

An artist’s impression of a magnetar eruption. Image credit: NASA’s Goddard Space Flight Center.

Astronomers Detect Spin-Down Glitch in Distant Magnetar

Jan 27, 2023 by News Staff

Magnetars are a special subset of the isolated neutron star family, with X-ray and radio emission mainly powered by the decay of their immense magnetic...

Schematic and applications of the liquid-solid phase transition of MPTM. Image credit: Wang et al., doi: 10.1016/j.matt.2022.12.003.

Shape-Shifting Robot Can Turn into Liquid and Escape Cage

Jan 26, 2023 by News Staff

Researchers from the Shenzhen Campus of Sun Yat-sen University, Carnegie Mellon University, the Chinese University of Hong Kong and Zhejiang University...

This artist’s conception shows a zoomed in view of MWC 349A and its surrounding disk of gas and dust that are being shaped by the winds and high-speed jet. Image credit: ALMA / ESO / NAOJ / NRAO / M. Weiss, NRAO, AUI & NSF.

ALMA Spots Hidden Jet from Oddball Star MWC 349A

Jan 9, 2023 by News Staff

The jet observed by the Atacama Large Millimeter/submillimeter Array (ALMA) is ejecting material away from MWC 349A at a blistering 500 km per second (311...

This composite image shows one of the studied clusters, NGC 3293, which is 11 million years old and is located about 8,300 light-years from Earth in the constellation of Carina. The image contains X-rays from Chandra (purple) as well as infrared data from ESA’s Herschel Space Observatory (red), longer-wavelength infrared data from NASA’s retired Spitzer Space Telescope (blue and white), and optical data from the MPG/ESO 2.2-m telescope at ESO’s La Silla Observatory appearing as red, white and blue. Image credit: NASA / CXC / Penn State University / Getman et al. / ESA / JPL-Caltech / Herschel Space Observatory / IPAC / SSC / Spitzer Space Telescope / MPG / ESO / G. Beccar.

Astronomers Trace Evolution of X-Ray Activity in Young Sun-Like Stars

Dec 27, 2022 by News Staff

Astronomers using NASA’s Chandra X-ray Observatory and ESA’s Gaia satellite have studied a sample of 6,003 stars in 10 different open clusters with...

An artist’s impression of a magnetar. Image credit: NASA’s Goddard Space Flight Center / S. Wiessinger.

Distant Magnetar Has Solid Surface with No Atmosphere

Nov 4, 2022 by News Staff

Magnetars are neutron stars with ultra-strong magnetic fields, which can be observed in X-rays. Polarization measurements could provide information on...

This composite image shows the supernova remnant Cassiopeia A, a structure resulting from the explosion of a star in the constellation of Cassiopeia. The blues represent data from NASA’s Chandra X-ray Observatory, the turquoise is from IXPE, and the gold is courtesy of the NASA/ESA Hubble Space Telescope. Image credit: NASA / CXC / SAO / NASA / MSFC / Vink et al. / STScI.

IXPE Maps Polarized X-Rays from Cassiopeia A

Oct 18, 2022 by News Staff

Cassiopeia A is a remnant that blew up as a supernova approximately 11,000 years ago. This composite image shows the supernova remnant Cassiopeia A, a...

This artist’s illustration indicates where the modeling of the ALMA data predicts the hot spot to be and its orbit around Sagittarius A*. Image credit: ESO / M. Kornmesser / M. Wielgus / Event Horizon Collaboration.

ALMA Spots Bubble of Hot Gas in Orbit around Milky Way’s Central Black Hole

Sep 22, 2022 by News Staff

Sagittarius A*, the 4.3-million-solar-mass black hole at the center of our Milky Way Galaxy, was observed with the Atacama Large Millimeter/submillimeter...

This image, obtained with the Metis instrument onboard ESA’s Solar Orbiter on March 25, 2022, shows the solar corona. Image credit: Telloni et al., doi: 10.3847/2041-8213/ac8104.

ESA’s Solar Orbiter Observes Magnetic Switchback in Sun’s Corona

Sep 12, 2022 by Natali Anderson

Solar switchbacks are sudden, large radial deflections of the solar wind magnetic field, previously revealed in interplanetary space by NASA spacecraft. This...

Top left: a giant blue star, much more massive than our Sun, has consumed, through nuclear fusion at its center, all its hydrogen, helium, and heavier elements up to iron. It now has a small iron core (red dot) at its center. Unlike the earlier stages of fusion, the fusion of iron atoms absorbs, rather than releases, energy. The fusion-released energy that has held up the star against its own weight now is gone, and the star will quickly collapse, triggering a supernova explosion. Top right: the collapse has begun, producing a superdense neutron star with a strong magnetic field at its center (inset). The neutron star, though containing about 1.5 times the mass of the Sun, is only about the size of Manhattan. Bottom left: the supernova explosion has ejected a fast-moving shell of debris outward into interstellar space. At this stage, the debris shell is dense enough to shroud from view any radio waves coming from the region of the neutron star. Bottom right: As the shell of explosion debris expands over a few decades, it becomes less dense and eventually becomes thin enough that radio waves from inside can escape. This allowed observations by the VLA Sky Survey to detect bright radio emission created as the rapidly spinning neutron star’s powerful magnetic field sweeps through the surrounding space, accelerating charged particles. This phenomenon is called a pulsar wind nebula. Image credit: Melissa Weiss, NRAO / AUI / NSF.

Astronomers Spot Pulsar Wind Nebula in Distant Dwarf Galaxy

Jun 15, 2022 by News Staff

A pulsar wind nebula is created when the powerful magnetic field of a rapidly spinning neutron star accelerates surrounding charged particles to nearly...

MeerKAT image of the PSR J0901-4046 region at 1.28 GHz. Image credit: Caleb et al., doi: 10.1038/s41550-022-01688-x.

Astronomers Discover Unusual Radio-Emitting Neutron Star

May 31, 2022 by News Staff

Radio-emitting neutron stars are objects with spin periods ranging from milliseconds to tens of seconds; as they age and spin more slowly, their radio...

https://cdn.sci.news/images/2022/04/image_10734-Micronova.jpg

New Type of Nova Discovered: Micronova

Apr 21, 2022 by News Staff

A micronova is a thermonuclear blast that happens on the surface of certain stars and lasts for just a few hours making them extremely difficult to observe. This...

This color image of Mercury was generated from three MESSENGER images taken through filters sensitive to light in different wavelengths. Image credit: NASA / Johns Hopkins University Applied Physics Laboratory / Carnegie Institution of Washington.

Planet Mercury Has Magnetic Storms, New Research Shows

Mar 31, 2022 by News Staff

The significantly weaker magnetic field, smaller magnetosphere, and much faster timescale of processes around Mercury, when compared with Earth, enable...

This infrared image, taken by NASA’s Cassini spacecraft, shows an aurora at the southern pole of Saturn. Image credit: NASA / Cassini / VIMS Team / University of Arizona / University of Leicester / JPL / ASI.

Weather Drives Saturn’s Powerful Aurorae, Planetary Scientists Say

Feb 9, 2022 by News Staff

Saturn is unique among planets observed to date in that some of its aurorae are generated by swirling winds within its atmosphere, and not just from the...

An image of the spectral index of radio-emitting filaments in the center of the Milky Way Galaxy. Image credit: Yusef-Zadeh et al., doi: 10.3847/2041-8213/ac4802.

New MeerKAT Image Reveals Radio-Emitting Filaments in Milky Way’s Center

Feb 3, 2022 by News Staff

The new image from the MeerKAT telescope at the South African Radio Astronomy Observatory (SARAO) in Cape Town, South Africa, shows nearly 1,000 magnetized...

This image shows several supra-arcade downflows occurring in a solar flare; the downflows appear directly above the bright flare arcade; this solar flare occurred on June 18, 2015. Image credit: SDO / NASA.

Astronomers Propose New Explanation for Finger-Like Features Seen in Some Solar Flares

Jan 27, 2022 by News Staff

Dr. Chengcai Shen from the Harvard & Smithsonian Center for Astrophysics and colleagues have analyzed images of the so-called supra-arcade downflows...

An artist’s impression of what the object might look like if it’s a magnetar. Image credit: ICRAR.

Radio Astronomers Discover Compact Object with Ultra-Powerful Magnetic Field

Jan 27, 2022 by News Staff

Astronomers using the Murchison Widefield Array (MWA) telescope have discovered a spinning object that pulses every 18.18 minutes; they’ve localized...

An artist’s impression of a giant magnetar flare. Image credit: Universitat de València.

ASIM Detects Huge Pulsating Flare from Extragalactic Magnetar

Dec 27, 2021 by Enrico de Lazaro

The giant gamma-ray flare event, designated GRB 2001415, was emitted by a powerful magnetar in NGC 253, an active starburst galaxy approximately 11 million...

An artist’s impression of the exoplanet HAT-P-11b with its extended helium atmosphere blown away by the star, an orange dwarf star smaller, but more active, than the Sun. Image credit: Denis Bajram.

HAT-P-11b Has Strong Magnetosphere, Metal-Poor Atmosphere

Dec 23, 2021 by News Staff

Using ultraviolet data from the NASA/ESA Hubble Space Telescope, astronomers have detected carbon ions — charged particles that interact with magnetic...

Parker Solar Probe has flown through the solar corona and sampled particles and magnetic fields there. Image credit: NASA’s Goddard Space Flight Center.

Parker Solar Probe Enters Magnetized Atmosphere of the Sun

Dec 15, 2021 by News Staff

The high temperatures and strong magnetic fields of the Sun’s upper atmosphere — the corona — form streams of the solar wind that expand...

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