Tag Archive for 'Magnetic field'

An artist’s concept of Messier 77, featuring its powerful black hole and accretion disk, and never before seen polarization in water masers outside of our Milky Way Galaxy. Image credit: NSF / AUI / NRAO / S. Dagnello.

Astronomers Spot Magnetic Filaments in Accretion Disk around Messier 77’s Central Black Hole

Dec 11, 2024 by News Staff

Messier 77 is a well-known, relatively nearby, bright spiral galaxy with a supermassive black hole at its center. An artist’s concept of Messier 77,...

$A diffractive robot. Image credit: Smart et al., doi: 10.1126/science.adr2177.$

Researchers Create Smallest Walking Robot Yet

Dec 4, 2024 by News Staff

A team of researchers at Cornell University has created a new class of magnetically controlled microscopic robots (microbots) that operate at the visible-light...

On August 31, 2012, a long filament of solar material that had been hovering in the Sun’s atmosphere, the corona, erupted out into space at 4:36 p.m. EDT. The CME traveled at over 900 miles per second. It did not travel directly toward Earth, but did connect with Earth’s magnetic environment, or magnetosphere, with a glancing blow, causing aurora to appear on the night of September 3. Image credit: NASA’s Goddard Space Flight Center.

Sun Has Swirling Polar Vortices, New Study Suggests

Nov 18, 2024 by News Staff

Polar vortices are present in planetary atmospheres, from the Earth-like rocky planets to Jupiter- and Saturn-like gas giants. However, not much is known...

The first panel of this artist’s concept depicts how Uranus’ magnetosphere was behaving before the flyby of NASA’s Voyager 2; the second panel shows an unusual kind of solar weather was happening during the 1986 flyby, giving scientists a skewed view of the magnetosphere. Image credit: NASA / JPL-Caltech.

Voyager 2’s Flyby of Uranus in 1986 was During Anomalous Solar Event, New Study Suggests

Nov 11, 2024 by News Staff

When NASA’s Voyager 2 spacecraft flew by Uranus in 1986, it provided scientists’ first close glimpse of this ice-giant planet. Alongside the discovery...

The center of this infographic shows the sharpest-ever image of the cloud of charged particles trapped in Earth’s magnetic field, while the insets show measurements of high-energy ions and electrons detected along the JUICE’s flyby route. Image credit: ESA / NASA / Johns Hopkins APL / Josh Diaz.

JUICE Captures Sharpest Ever Image of Earth’s Radiation Belt

Oct 2, 2024 by News Staff

In August 2024, ESA’s JUpiter ICy Moons Explorer (JUICE) made history with a daring Moon-Earth flyby and double gravity assist maneuver. As the spacecraft...

The Inouye Solar Telescope presents its first map of the solar coronal magnetic field signals as measured using the Zeeman Effect. Image credit: NSF / NSO / AURA / NASA’s Solar Dynamics Observatory.

Inouye Solar Telescope Creates Its First Detailed Maps of Sun’s Coronal Magnetic Fields

Sep 11, 2024 by News Staff

This milestone promises to enhance our understanding of the Sun’s atmosphere and how its changing conditions lead to impacts on our technology-dependent...

Wang et al. demonstrate that the inner core of Earth gradually super-rotated from 2003 to 2008, and then from 2008 to 2023 sub-rotated two to three times more slowly back through the same path. Image credit: USC Graphic / Edward Sotelo.

Inner Core of Earth Began to Decrease Its Speed around 2010, Study Suggests

Jun 14, 2024 by News Staff

Movement of the inner core of our planet has been debated by the scientific community for two decades, with some research indicating that the inner core...

An artist’s impression of the early Earth. Image credit: NASA.

Near-Collapse of Geomagnetic Field May Have Contributed to Diversification of Life on Earth

May 10, 2024 by News Staff

An ultra-weak geomagnetic field between 591 and 565 million years ago (Ediacaran period) coincided with a significant increase in the oxygen levels in...

On November 15, 2023, Integral detected a burst of gamma-rays for only a tenth of a second. The detection was sent to the Integral science data center, where software determined it came from the nearby galaxy Messier 82. The small square on Integral’s map shows the location of the burst. The blue circle on the two cut-out images shows the corresponding location. Image credit: ESA / Integral / XMM-Newton / INAF / TNG / M. Rigoselli, INAF.

Astronomers Detect Giant Flare from Magnetar in Messier 82

Apr 25, 2024 by News Staff

Using sensitive instruments onboard ESA’s International Gamma-Ray Astrophysics Laboratory (Integral) mission, astronomers have detected a gamma-ray burst...

Earth’s magnetic field lines. Image credit: NASA’s Goddard Space Flight Center.

Earliest Evidence of Earth’s Magnetic Field Found in Greenland

Apr 25, 2024 by News Staff

Recovering ancient records of Earth’s magnetic field is challenging because the magnetization in rocks is often reset by heating during tectonic burial...

Schematic view of planetary material escaping through Venus magnetosheath flank; the red line and arrow show the region and direction of observations by BepiColombo when the escaping ions (C+, O+, H+) were observed. Image credit: Thibaut Roger / Europlanet 2024 RI / Hadid et al.

BepiColombo Detects Oxygen and Carbon Ions in Magnetosphere of Venus

Apr 15, 2024 by Natali Anderson

In August 2021, the ESA/JAXA Mercury-bound BepiColombo spacecraft performed its second flyby of Venus and provided a short-lived observation of its induced...

This image, taken with ESO’s VLT Survey Telescope, shows the beautiful nebula NGC 6164/6165. The nebula is a cloud of gas and dust surrounding a pair of stars called HD 148937. Image credit: ESO / VPHAS+ Team / CASU.

Astronomers Observe Result of Violent Stellar Merger

Apr 11, 2024 by News Staff

Most stellar magnetic fields — including the Sun’s — are produced by a dynamo that is generated in interior layers undergoing convection....

An artist’s impression of the radio magnetar XTE J1810-197. Image credit: Carl Knox, OzGrav / Swinburne University of Technology.

Astronomers Detect Unusual Radio Pulses from Nearby Magnetar

Apr 8, 2024 by News Staff

Astronomers using CSIRO’s Parkes radio telescope (Murriyang) have detected unusual radio signals from XTE J1810-197, a radio magnetar (ultra-magnetic...

Structure of SOT spin-LED: controlling the intensity of emitted light and charge current is the basis of transferring and processing information; by contrast, robust information storage and magnetic random-access memories are implemented using the spin of the carrier and the associated magnetization in ferromagnets; the missing link between the respective disciplines of photonics, electronics and spintronics is to modulate the circular polarization of the emitted light, rather than its intensity, by electrically controlled magnetization; Dainone et al. demonstrated that this missing link is established at room temperature and zero applied magnetic field in light-emitting diodes through the transfer of angular momentum between photons, electrons and ferromagnets. Image credit: Dainone et al., doi: 10.1038/s41586-024-07125-5.

Physicists Transfer Electron Spin to Photons

Mar 28, 2024 by News Staff

A team of physicists led by Dr. Yuan Lu from the Université de Lorraine’s Institut Jean Lamour has used electrical pulses to manipulate magnetic information...

This image from the Event Horizon Telescope shows the polarized view of Sagittarius A*; the lines overlaid on this image mark the orientation of polarization, which is related to the magnetic field around the shadow of the black hole. Image credit: EHT Collaboration.

Event Horizon Telescope Observes Twisted Magnetic Field around Milky Way’s Central Black Hole

Mar 27, 2024 by News Staff

According to astronomers’ best models of black hole evolution, the magnetic fields in the accretion disk need to be strong enough to push the accreting...

Yu et al. discovered radio bursts above a sunspot that resemble radio emissions from aurorae on Earth. The pink-purple streaks in this illustration represent the radio emissions, with higher-frequency radio signals in pink, closer to the sunspot, and lower frequencies in purple. The thin lines represent magnetic field lines above the sunspot. The sunspot is the dark region on the Sun at the bottom. Image credit: Sijie Yu, New Jersey Institute of Technology.

Solar Astronomers Detect Aurora-Like Radio Emission above Sunspot

Mar 21, 2024 by News Staff

Astronomers using the Karl G. Jansky Very Large Array have observed long-lasting aurora-like radio bursts above a sunspot. This discovery could help us...

An artist’s impression of WD 0816-310, a magnetic white dwarf located 63 light-years away in the constellation of Puppis. Image credit: L. Calçada / ESO.

VLT Detects ‘Metal Scar’ on Surface of White Dwarf Star

Feb 27, 2024 by News Staff

Dynamically active planetary systems orbit a significant fraction of white dwarf stars. These stars often exhibit surface metals accreted from debris disks....

This ancient brick from the Slemani Museum dates to the reign of Nebuchadnezzar II (ca. 604 to 562 BCE) based on the interpretation of the inscription; this object was looted from its original context before being acquired by the Slemani Museum and stored in that museum with agreement from the central government. Image credit: Howland et al., doi: 10.1073/pnas.2313361120.

Cuneiform-Inscribed Bricks Unveil Strength of Ancient Geomagnetic Field in Mesopotamia

Dec 19, 2023 by News Staff

Reconstructing the behavior of Earth’s magnetic field during archaeological periods is crucial for both achieving a better understanding of the field...

Sketch of a Rydberg molecule (a): the coordinates of the Rydberg electron (blue) and ground state atom (green) relative to the Rydberg core (red) are denoted with black arrows; the relevant spins are that of the Rydberg electron s1, the electron of the ground state atom s2 and the nuclear spin of the ground state atom I. Sketch of a trilobite molecule (b): the Rydberg core and the ground state atom are shown (with exaggerated size) as red and green spheres respectively; the electronic probability density projected to 2D is indicated by the density of blue dots. Image credit: Althön et al., doi: 10.1038/s41467-023-43818-7.

Physicists Observe Trilobite Rydberg Molecules

Dec 18, 2023 by News Staff

A team of physicists at the Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau has produced pure trilobite molecules in rubidium over...

Flaring, active regions of the Sun are highlighted in this image combining observations from several telescopes. High-energy X-rays from NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) are shown in blue; low-energy X-rays from Japan’s Hinode spacecraft are green; and extreme ultraviolet light from NASA’s Solar Dynamics Observatory (SDO) is yellow and red. All three telescopes captured their solar images around the same time on April 29, 2015. Image credit: NASA / JPL-Caltech / GSFC / JAXA.

Solar Activity Likely to Peak in 2024, Astronomers Say

Nov 29, 2023 by News Staff

Sunspots have been observed for over four centuries and the magnetic nature of sunspot cycles has been known for about a century. However, some of its...

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