Sentences with phrase «of accretion discs»

This enabled the astronomers to measure the diameter of the accretion disc and plot its various temperatures, providing a new experimental confirmation of how quasars work.

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.

Not exact matches

The swirls within the wrap remind me greatly of elliptical orbits of planets, the theoretical shape of galaxies, and even the accretion disc of the black hole.

But now researchers from the Niels Bohr Institute have discovered a system consisting of two stars with three rotating planet - forming accretion discs around them.

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 researchers found that relatively cool accretion discs around young stars, whose inner edges can be several times the size of the Sun, show the same behaviour as the hot, violent accretion discs around planet - sized white dwarfs, city - sized black holes and supermassive black holes as large as the entire Solar system, supporting the universality of accretion physics.

Computer simulations suggest that when two black holes spiral towards each other on a collision course, much of the gas and dust in the spinning accretion disc surrounding each of them is ripped away by the gravity of the other.

The researchers modeled the resulting accretion disc — an elliptical disc of stellar debris swirling around the black hole — along with its probable speed, radius, and rate of infall, or speed at which material falls onto the black hole.

Models suggest that accretion discs could reach the size of a solar system and glow as brightly as a star.

About half of the disrupted star moves in elliptical orbits around the black hole and forms an accretion disc which eventually shines brightly in optical and X-ray wavelengths.

«If there are many axion stars in the centres, we expect that some of them collide with the black hole accretion disc,» says Iwazaki.

Their tendency would be to cluster near the centre of galaxies, making them more likely to pass near the supermassive black holes that sit there and run into the accretion discs of gas that surround them.

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

So if astronomers can understand the physics of the matter that is flowing into the black hole, they can use it to test the predictions of general relativity as never before — but only if the movement of the matter in the accretion disc can be completely understood.

The sun formed at the hot and dense centre of this disc, while the planets grew by accretion in the cooler outer regions.

Those would cluster near the centre of galaxies, making them more likely to pass through the accretion discs of supermassive black holes there, causing the bursts we detect.

Kip Thorne worked out the mathematics of what happens to the accretion disc, and found that the intense gravity warps the disc around the black hole, creating the spectacular halo that is one of the movie's visual highlights.

They discuss a unified scenario for understanding brightness variations from accretion discs around different types of stars and compact objects.

At the presentations of their research results, the two students showed their findings respectively focused on (i) Accretion and rotational movement of gas around a protostar and the formation of a circumstellar disc and (ii) Identification of bipolar jets (mass ejection) from multiple protostars and classification according to the evolutionary phases.