Sentences with phrase «accreting at»

Those furious feeding rates still seem to defy the black holes» supermassive size: A 100 - solar - mass black hole accreting at the limit should take about 800 million years to reach a billion solar masses, even taking into account that it would eat faster as it grew.

When matter is accreted at rates higher than that corresponding to the Eddington limit, it is called «supercritical (or super-Eddington) accretion.»

«The study shows that Earth's water most likely accreted at the same time as the rock.

Not exact matches

«Money being reinvested into a business is, by definition, not immediately accreting to shareholders, which we think may be a problem given high consensus earnings growth expectations,» says Castagno, adding that the companies most at risk, based on elevated expectations and likelihood of reinvestment, are those in Consumer Staples, Financials, Health Care, and Industrials.

Some of the lowermost overlying Proterozoic metasediments were accreted to these domes during amphibolite grade regional metamorphism (5 to 8 kb and 550 ° to 630 ° C) at 1870 to 1800 Myr.

«At least in two of the planemos we see possible evidence that they are accreting material from their disk,» Jayawardhana adds.

In Alaska, the shape of the accreted terranes generally controls the location of the Denali fault and the mountains that form along it, especially at the bends in the trace of the fault.

Astrophysicists at Goethe University Frankfurt, and collaborators in the ERC - funded project BlackHoleCam in Bonn and Nijmegen have created and compared self - consistent and realistic images of the shadow of an accreting supermassive black hole — such as the black - hole candidate Sagittarius A * (Sgr A *) in the heart of our galaxy — both in general relativity and in a different theory of gravity.

«We think that there is a dormant black hole there that has accreted a lump of matter — probably a star that has fallen into it,» says astrophysicist Neil Gehrels, the lead scientist for SWIFT at NASA's Goddard Space Flight Center in Greenbelt, Maryland.

Scientists can detect black holes by looking at the motion of stars and gas nearby as well as matter accreted from its surroundings.

Quasars are tremendously bright objects composed of enormous black holes accreting matter at the centers of massive galaxies.

The white dwarf accretes material from the companion star, then at some point, it might explode as a type Ia supernova.

The team found that the two most important properties of the object are its physical size, scale and the rate at which it is accreting matter.

«In the same that we can only eat so much food at a time, there are limits to how fast neutron stars can accrete matter,» says Murray Brightman, a postdoctoral scholar at Caltech and lead author of a new report on the findings in Nature Astronomy.

But in recent years, using X-ray emissions as a measure of heat given off by powerful gravitational forces, they unexpectedly found that most SMBH accrete matter at very low levels.

To explore whether neutron stars power jets at low accretion rates (LX ≲ 1036 erg / s), we investigate the radio and X-ray properties of three accreting millisecond X-ray pulsars (IGR J17511 - 3057, SAX J1808.4 - 3658 and IGR J00291 +5934) during their outbursts in 2015, and of the non-pulsing neutron star Cen X-4 in quiescence (2015) and in outburst (1979).

According to Maria Cristina De Sanctis, lead author of the new study, at the National Institute of Astrophysics in Rome: «The presence of ammonia - bearing species suggests that Ceres is composed of material accreted in an environment where ammonia and nitrogen were abundant.

«Astrophysicists can model the accreting material to some extent, but it is unclear how gas in the accretion flow migrates from an orbit at a large radius to one near the [event] horizon...» Avery E. Broderick and Abraham Loeb, p. 44.

«Astrophysicists can model the accreting material to some extent, but it is unclear how gas in the accretion flow migrates from an orbit at a large radius to one near the

At the same time, the spiral shocks launched by the planets provide a mechanism for angular momentum transport, allowing the zero viscosity disk to accrete.

Explaining M82 - X2 is difficult; somehow the pulsar is accreting gas at a tremendous rate.

Here we present new J - band imaging polarimetry of LkC... ▽ More LkCa 15 hosts a pre-transitional disk as well as at least one accreting protoplanet orbiting in its gap.

Response: Despite the small land area of the plant, SMR - 160 will accrete a small fraction of the dose of a large contemporary reactor at its site boundary because of the many dose mitigation features built into its design, viz:

Artist's impression of the heart of a quasar, at which a supermassive black hole grows as it accretes material.

When supermassive black holes at the center of galaxies accrete matter (usually gas), they give rise to a highly energetic phenomena named Active Galactic Nuclei (AGN).

In their paper, published this week in Nature, the team said that while it is now well established that most, if not all, galaxies host a supermassive black hole at their center, the process for how galaxies accrete — or acquire — matter is not well understood.

Our current understanding tells us that for a supermassive black hole to turn into a massive quasar, it would need to accrete matter for at least 100 million years.

«It (the black hole) must have been accreting gas at close to the maximum rate for most of its existence,» Bram Venemans of the Max Planck Institute for Astronomy in Heidelberg, Germany, who was not involved in the study, reportedly said.

Colliding at speeds up to 22,000 miles per hour (36,000 kilometers per hour), such a collision may have stripped most of the rocky mantle from the protoplanet that became Mercury with its iron - rich core, while a Mars - size protoplanet struck the early Earth off - center and created a spray of mostly mantle material that later accreted to form the Moon.

He had a big part in the last MG sports car, the MG MGF, then did a (retrospectively indifferent) stint at Lincoln at the time Ford was busily and expensively accreting small - scale manufacturers it didn't know what to do with.

Under current law, accreted market discount is taxed as ordinary income at the time a bond is sold or redeemed.

The effect of this rule is that a taxpayer who purchases a tax - exempt bond subsequent to its original issuance at a price less than its stated redemption price at maturity (or, if issued with OID, at a price less than its accreted value), either because interest rates have risen or the obligor's credit has declined since the bond was issued, and who thereafter recognizes gain on the disposition of such bond will have part or all of the «gain» treated as ordinary income.

Accreted market discount is taxed as ordinary income at the time a bond is sold or redeemed.

The crusted pigment has accreted to such a density that even the hard edges of architectural planes are softened at the meeting of seams.

Analysis of the satellite derived shoreline data indicates that 24 % of the world's sandy beaches are eroding at rates exceeding 0.5 m / yr, while 28 % are accreting and 48 % are stable.»