Sentences with phrase «most of this accretion»

Most of this accretion disk is relatively cool, «whichmeans its temperature is in the millions of degrees,» says Wilms.

Not exact matches

Only the most expert and careful criticism can separate the earliest layers of tradition from later accretion, and such criticism can rarely be quite certain of its results.

One type of such criticism has been called textual, because it aims to get back to the most authentic original form of the text, digging through the accretions and changes that came with copying and recopying.

«One of the things I guess I'm most famous for is studying accretion disks where the disk is tilted,» explained Fragile.

They found that only two types of accretion models, both of which involve the most strongly interacting binaries, could create these jetted pre-planetary nebulae.

Such discs, known as quasar accretion disks, are typically about 100 billion kilometers across, and most lay billions of light - years away.

«Most of Earth's water was likely present before the moon - forming giant impact: Oxygen isotopic evidence for accretion of Earth's water before a high - energy moon - forming giant impact.»

The black holes that we can observe directly through their radiant emission are mostly in a configuration where gas swirls around the black hole in the form of an accretion disk and that accretion disk — most of the mass is going to be in an ionized form, and then some of that gas gets expelled from the environment around the black hole, while it is still outside the black hole, it gets squirted out in the form of an outflow, a wind like the solar wind and then [a] much faster, collimated outflow called a jet.

The most popular explanation of how jets form is that the fast - spinning accretion disk, which contains charged particles, will produce a powerful magnetic field that is in contact with the black hole.

Christian Knigge, Professor in Physics and Astronomy at the University of Southampton, worked with colleagues from around the world to study one of the most important, but least understood processes in astronomy — accretion, where the mass of an object grows by gravitationally collecting material from nearby.

Using NASA's super-sensitive Chandra X-ray space telescope, a team of astronomers led by Q. Daniel Wang at the University of Massachusetts Amherst has solved a long - standing mystery about why most super massive black holes (SMBH) at the centers of galaxies have such a low accretion rate — that is, they swallow very little of the cosmic gases available and instead act as if they are on a severe diet.

We interpret this periodicity as a property of the accretion disc, most likely a long - term precession, where the disc edge structure and X-ray irradiation is responsible for the hard X-ray dips and modulation, although we discuss other possible explanations, including Lense - Thirring precession in the inner disc region and spectral state variations.

Most galaxies in the observable universe contain a supermassive black hole at their center, one that is either active and surrounded by an accretion disk of dust, gas and other debris, or is dormant — lurking at the center, patiently awaiting its next meal.

Under the most accepted scenario, planets form over tens of millions of years from the slow accretion of dust, rocks, and gas.

The accretion disk is a few trillion kilometers across (a few light months across) but most of the intense radiation is produced within a couple of hundred billion kilometers from the black hole.

Smaller terrestrial planets lose most of their atmospheres because of this accretion, but the lost gases can be replaced by outgassing from the mantle and from the subsequent impact of comets.

Indeed, GRBs appear to emit produce even more energy than supernovae or even quasars (which are energetically bright accretion disks and bi-polar jets around supermassive black holes that are most commonly found in the active nuclei of some distant galaxies and possibly even in the pre-galaxy period after the Big Bang).

A number of physical mechanisms could locally increase the dust scale height near the inner disk wall, and we discuss several of those mechanisms; the most plausible mechanisms are either a disk warp due to interaction with the stellar magnetic field or dust entrained in funnel - flow accretion columns arising near the inner disk wall.

Therefore, the Galactic center provides a unique fundamental - physics laboratory for experimental tests of BH accretion and theories of gravity in their most extreme limits.

The accretion of acetylcholine increases the amount of time spent in REM, the sleep cycle when you're most likely dreaming.

Besides some examples of his heaped relief paintings dating from the»80s and»90s, one of the major surprises of the exhibition are Poon's most recent works that meld his long preoccupation with the haptic density of pigment to a chromatic and gestural fluency which is alternatively reminiscent of both Pierre Bonnard's lightly lyrical touch and Milton Resnick's darker gestural accretions.

Absolutely but the show proves that Kelley's art as a whole was based on the accretion of countless small details that would escape the attention of most of us.

Together, they composed pictures by an accretion of digital erasures, most notably in Spotting # 11 (Elyse, Jessica), 2014.