Tag

Magnetic Fields

All articles tagged with #magnetic fields

space1 month ago•13 min saved

Magnetism Steers Sun‑Like Stars’ Spin Across a Lifetime, Study Says

A high‑resolution magnetohydrodynamic simulation of solar‑type interiors on Japan’s Fugaku supercomputer shows sun‑like stars maintain a solar‑like rotation (equator speeds ahead of the poles) throughout their lifetimes, overturning a 45‑year theory of anti‑solar rotation and highlighting the dominant role of magnetic fields and turbulence; the model reproduces the Sun’s rotation and predicts the magnetic field weakens gradually with age, though direct observations remain challenging.

via Interesting Engineering|

#magnetic-fields #magnetohydrodynamics #rotation

space2 months ago•16 min saved

Quiet White Dwarf Sparks Mysterious Bow Shock

Astronomers using ESO’s Very Large Telescope observed a glowing bow shock around the white dwarf RXJ0528+2838 in a binary system, even though the star shows no accretion disc or obvious outflow. The shock, visible in red, green, and blue, appears to have been powered for about 1,000 years, challenging standard models of how matter moves in such systems. A strong magnetic field could be funneling material from the companion directly onto the dead star without forming a disc, but this mechanism, if real, would only partly explain the phenomenon, leaving the exact origin of the outflow a mystery as reported in Nature Astronomy.

via Gizmodo|

#astronomy #binary-stars #bow-shocks

science3 months ago•3 min saved

Supercomputers Unveil the Mysteries of Black Hole Environments

A new study using supercomputers has produced the most detailed simulations to date of how stellar-mass black holes consume and eject matter, incorporating complex physics and general relativity, revealing insights into the behavior of accretion disks, jets, and magnetic fields around black holes.

via ScienceAlert|

#accretion-disks #astrophysics #black-holes

science3 months ago•3 min saved

Supercomputers Unveil Black Hole Secrets

A new study using supercomputers has produced the most detailed simulations to date of how stellar-mass black holes consume and eject matter, incorporating complex physics and general relativity, which could also apply to supermassive black holes and help explain recent astronomical observations.

via Yahoo|

#accretion-disks #astrophysics #black-holes

science3 months ago•3 min saved

Uranus and Neptune Might Be Rock Giants Instead of Ice Worlds

New research suggests that Uranus and Neptune may be more rocky and less icy than previously thought, challenging the traditional classification of these planets as 'ice giants' and highlighting the need for future missions to better understand their true nature.

via ScienceAlert|

#ice-giants #magnetic-fields #neptune

science3 months ago•3 min saved

Swiss Researchers Challenge Ice Giant Assumptions for Uranus and Neptune

New research suggests Uranus and Neptune may be more rock-rich than previously thought, challenging the traditional view of them as ice giants, and highlights the need for future missions to better understand their true nature.

via SciTechDaily|

#magnetic-fields #neptune #planetary-interior

science5 months ago•5 min saved

Scientists Uncover Explanation for 'Impossible' Black Hole Mergers

Scientists have explained the 'impossible' merger of massive, rapidly spinning black holes by considering the role of magnetic fields in the evolution of progenitor stars, revealing that magnetic forces can influence black hole mass and spin, and potentially produce black holes within the mass gap observed in previous theories.

via Space|

#black-holes #gravitational-waves #magnetic-fields

science5 months ago•4 min saved

Scientists Uncover Groundbreaking Image of Black Hole Pairing

Scientists propose that magnetic fields during stellar collapse can eject mass from black holes, explaining the formation of unexpectedly large black holes within the 'mass gap' and potentially resolving the mystery of a recent, unusual black hole merger detected by LIGO.

via Gizmodo|

#black-holes #ligo #magnetic-fields

science5 months ago•2 min saved

Scientists Unveil Explanation for 'Impossible' Black Hole Mergers

In 2023, astronomers observed a black hole merger that defied existing physics, involving black holes within a forbidden mass range and spinning at near light speed. New simulations incorporating magnetic fields reveal that these fields can eject mass during a star's collapse, producing lighter, fast-spinning black holes and potentially observable gamma-ray bursts, offering insights into these 'impossible' black holes.

via Universe Today|

#black-holes #gamma-ray-bursts #gravitational-waves

space-exploration5 months ago•10 min saved

NASA's ESCAPADE Mission to Mars Launches on Blue Origin's New Glenn Rocket

NASA's ESCAPADE mission, launching in early November, will deploy twin satellites, Blue and Gold, to study Mars's magnetic fields and atmosphere in 3D, helping scientists understand atmospheric loss and space weather effects crucial for future human missions to Mars.

via Phys.org|

#escapade #magnetic-fields #mars

science5 months ago•2 min saved

NASA's Voyager Encounters a Fiery Barrier at the Solar System's Edge

NASA's Voyager 1 has encountered a 'wall of fire' at the edge of the Solar System, a hot zone near the heliopause, which marks the boundary between our Solar System and interstellar space. Data from Voyager 1 and Voyager 2 reveal that beyond this boundary, magnetic fields are aligned parallel to those inside the heliosphere, providing new insights into the nature of this frontier.

via Dagens.com|

#heliopause #interstellar-space #magnetic-fields

science5 months ago•2 min saved

Astrophotographer Captures Fiery Plasma Dance Above the Sun

Astrophotographer Mark Johnston captured detailed footage of a solar prominence, a large plasma structure extending from the sun's surface, showcasing the dynamic magnetic environment of the sun with high-resolution imaging.

via Space|

#astrophotography #magnetic-fields #plasma

science6 months ago•4 min saved

Webb Telescope Unveils Hidden Star Formation in Milky Way's Largest Cloud

The James Webb Space Telescope has provided new insights into the star-forming region Sagittarius B2 in the Milky Way, revealing that strong magnetic fields may hinder star formation despite the presence of dense gas and young stars, which could reshape our understanding of galactic evolution.

via Rude Baguette|

#galactic-evolution #james-webb-space-telescope #magnetic-fields

science6 months ago•2 min saved

Scientists Observe Surprising Changes at Black Hole's Event Horizon

Astronomers observing the supermassive black hole in galaxy M87 have discovered unexpected changes in its magnetic field polarization over several years, indicating a more complex and dynamic magnetic environment near the event horizon than previously thought, challenging existing models and highlighting the evolving capabilities of the Event Horizon Telescope.

via Yahoo|

#black-hole #event-horizon-telescope #m87

science6 months ago•7 min saved

Black Hole M87* Shows Dramatic Changes and Magnetic Flips in Recent Images

New images of the black hole M87* taken in 2017, 2018, and 2021 reveal dramatic changes in its magnetic fields, with polarization patterns flipping direction, indicating dynamic environmental changes around this supermassive black hole, which is over six billion times the mass of the sun.

via Live Science|

#black-hole #event-horizon-telescope #m87