Sentences with phrase «study of accretion»

Her research involves the study of accretion flows and emission processes around neutron stars and black holes.

Not exact matches

The study found a relationship between the size of the central object and the speed of the flickering produced by the disc, suggesting the physics of the accretion must be very similar around these different astronomical objects despite them being completely different in other ways, such as size, age, temperature and gravity.

The study, «Accretion - induced variability links young stellar objects, white dwarfs, and black holes», which is published in the journal Science Advances, shows how the «flickering» in the visible brightness of young stellar objects (YSOs)-- very young stars in the final stages of formation — is similar to the flickering seen from black holes or white dwarfs as they violently pull matter from their surroundings in a process known as aAccretion - induced variability links young stellar objects, white dwarfs, and black holes», which is published in the journal Science Advances, shows how the «flickering» in the visible brightness of young stellar objects (YSOs)-- very young stars in the final stages of formation — is similar to the flickering seen from black holes or white dwarfs as they violently pull matter from their surroundings in a process known as accretionaccretion.

But the USGS study notes that vertical coral accretion is an order of magnitude smaller than expected sea - level rise through 2100.

The new study is the latest attempt by the academic research community to seek relief from what it sees as the steady accretion of unreasonable and costly government - wide regulations and policy directives from individual agencies.

In a study, published in Coastal Engineering, the academics say deriving sufficient knowledge and understanding to forecast erosion and accretion with a level of confidence is arguably the «holy grail» for coastal scientists and engineers.

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

The study compared the influence of pH, resource availability, temperature, distance from shore, and depth on accretion - erosion balance.

According to Nyssa Silbiger, lead author of the study and doctoral candidate at HIMB, this novel technique provides a more accurate measurement of accretion and erosion rates.

By studying the jets from pre-planetary and planetary nebulae, Blackman and Lucchini were able to connect the energy and momentum involved in the accretion process with that in the jets; the process of accretion is what in effect provides the fuel for these jets.

«This includes theorists studying dark matter and the formation of black holes, astrophysicists modelling the subsequent accretion process, and astronomers working on radio and X-ray observations.»

An earlier study of another system with the GBT detected the first evidence of an accretion disk around a neutron star, which helped establish the link between low - mass X-ray binaries and pulsars.

The study found cooler sea temperatures, greater precipitation and stronger upwelling — all indicators of La Niña - like conditions at the study site in Panama — during a period when coral reef accretion stopped in this region around 4,100 years ago.

Bergmann and her colleagues studied the way matter in an accretion disk moves in its «death spiral» near the AGN of the galaxy NGC1097, a spiral galaxy about 45 million light years away from Earth.

Ice accretion affects a wide range of other engineering applications, including power cables, radio masts and wind turbines, which Janjua is looking to study next.

But a new study presents evidence that, for at least one kind of galaxy, the binary - accretion model should not be more than a minor contributor to the observed type Ia supernovae population.

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.

This suggests that the accretion disk and gas stream are strong enough to survive despite the damage caused by ultraviolet light,» explained Andrés Guzmán, the study's principal researcher and a postdoctoral fellow at the University of Chile.

«If a black hole is spinning, it drags space and time with it, and that drags the accretion disk, containing the black hole's food, closer towards it,» study lead author Chris Done, of the University of Durham in the United Kingdom, said in a statement.

«We were lucky that we detected the event just 3 - 4 years after the decline started so we could begin monitoring campaigns to study details of the accretion physics of active galaxies that can not be studied otherwise,» Bernd Husemann, project leader at the Close AGN Reference Survey and the lead author of the second study, said in the statement.

In addition, he was a pioneer in the discovery and study of magnetospheric accretion onto newly forming stars, including the use of «veiling» to measure accretion rates, and was a co-discoverer of brown dwarfs by carrying out the first successful application of the «lithium test» for substellar objects in 1995.

We have studied age dependent features in optical and near - infrared spectra of candidate members to the cluster (such as alkali lines and accretion associated indicators).

Make the following studies: growth rate; survival rate; document the different species of fish settled on the structure; visiting fish numbers and the effect of the «accretion» on the different species of coral...

In April examination of the work by the conservation department was initiated in order to understand Picasso's technique, studies necessary also to establish the correct procedures and the appropriate materials for selectively and gradually removing the unwanted surface accretions.