News tagged with accretion

Magnetic field around young star captured

For the first time astronomers, including SRON astronomer Woojin Kwon, have been able to capture the magnetic field in the accretion disk around a young star. The shape of the field was a big surprise. The discovery suggests ...

Oct 27, 2014
5 / 5 (8) 28

Global telescope array links successfully with GBT

For the first time, the National Science Foundation's Green Bank Telescope (GBT) was successfully linked with a network of millimeter-wavelength telescopes, giving a powerful boost to an observatory known as the Global Millimeter ...

May 09, 2014
5 / 5 (1) 0

How stellar death can lead to twin celestial jets

(Phys.org) —Astronomers know that while large stars can end their lives as violently cataclysmic supernovae, smaller stars end up as planetary nebulae – colorful, glowing clouds of dust and gas. In recent ...

Feb 12, 2014
4.5 / 5 (8) 0 | with audio podcast

A link between black holes and new stars

Supermassive black holes (those with millions to billions of solar-masses) are thought to reside at the centers of most galaxies. These black holes must have undergone periods of intense accretion activity ...

Oct 23, 2013
4.8 / 5 (8) 5

Galaxy winds

(Phys.org) —The most luminous galaxies in our universe are not particularly bright in the visible. Most of their energy output (which can be hundreds or even thousands of times more than our Milky Way's) ...

Sep 23, 2013
4.8 / 5 (5) 1 | with audio podcast

The largest magnetic fields in the universe

An ultradense ("hypermassive") neutron star is formed when two neutron stars in a binary system finally merge. Its short life ends with the catastrophic collapse to a black hole, possibly powering a short ...

Jul 26, 2013
5 / 5 (19) 27 | with audio podcast

Feeding galaxy caught in distant searchlight

An international group of astronomers that includes UC Santa Barbara astrophysicist Crystal Martin and former UCSB postdoctoral researcher Nicolas Bouché has spotted a distant galaxy hungrily snacking on ...

Jul 04, 2013
4.3 / 5 (12) 16 | with audio podcast

Fragments falling onto the Sun

(Phys.org) —Stars form as gravity coalesces the gas and dust in an interstellar cloud until the material develops clumps dense enough to become stars. Even after a star begins to burn its nuclear fuel it ...

Jul 01, 2013
4.7 / 5 (10) 0 | with audio podcast

Solar splashdown

(Phys.org) —On June 7, 2011, our Sun erupted, blasting tons of hot plasma into space. Some of that plasma splashed back down onto the Sun's surface, sparking bright flashes of ultraviolet light. This dramatic ...

Jun 20, 2013
5 / 5 (18) 13 | with audio podcast

Black hole naps amidst stellar chaos

(Phys.org) —Nearly a decade ago, NASA's Chandra X-ray Observatory caught signs of what appeared to be a black hole snacking on gas at the middle of the nearby Sculptor galaxy. Now, NASA's Nuclear Spectroscopic ...

Jun 11, 2013
3.7 / 5 (7) 0 | with audio podcast