Growing Supermassive Black Holes in Cosmological Simulations of Structure Formation

Sijacki, Debora; Springel, Volker; Haehnelt, Martin G.

doi:10.1017/s1743921310006988

Cited by 1 publication

(2 citation statements)

References 14 publications

(14 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar, seemingly bizarre, 'wandering' behaviour for massive luminous objects has recently been found by au-thors in different branches of Astrophysics. The displacement of luminous super-massive black holes from the centre of a young gas-rich galaxy was found by Sijacki et al (2010) in their simulations of merging super-massive black holes displaced from the galactic centre due to gravitational kicks. They found that luminous black holes were ejected further than expected given their kick and did not come back to the galaxy centre afterwards.…”

Section: Dynamics Of the Luminous Corementioning

confidence: 94%

“…Black holes of zero luminosity, on the other hand, returned to the galaxy centre in agreement with classical dynamical friction theory. Sijacki et al (2010) identified the asymmetry in the gas distribution around the SMBH as the driver of this unexpected behavior. In Chandrasekhar dynamical friction, there is a higher density trail behind the massive perturber.…”

Section: Dynamics Of the Luminous Corementioning

confidence: 99%

See 1 more Smart Citation

On the origin of wide-orbit ALMA planets: giant protoplanets disrupted by their cores

Humphries

Nayakshin

2019

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

Recent ALMA observations may indicate a surprising abundance of sub-Jovian planets on very wide orbits in protoplanetary discs that are only a few million years old. These planets are too young and distant to have been formed via the Core Accretion (CA) scenario, and are much less massive than the gas clumps born in the classical Gravitational Instability (GI) theory. It was recently suggested that such planets may form by the partial destruction of GI protoplanets: energy output due to the growth of a massive core may unbind all or most of the surrounding pre-collapse protoplanet.Here we present the first 3D global disc simulations that simultaneously resolve grain dynamics in the disc and within the protoplanet. We confirm that massive GI protoplanets may self-destruct at arbitrarily large separations from the host star provided that solid cores of mass ∼10-20 M ⊕ are able to grow inside them during their precollapse phase. In addition, we find that the heating force recently analysed by Masset & Velasco Romero (2017) perturbs these cores away from the centre of their gaseous protoplanets. This leads to very complicated dust dynamics in the protoplanet centre, potentially resulting in the formation of multiple cores, planetary satellites, and other debris such as planetesimals within the same protoplanet. A unique prediction of this planet formation scenario is the presence of sub-Jovian planets at wide orbits in Class 0/I protoplanetary discs.

show abstract

Section: Dynamics Of the Luminous Corementioning

confidence: 94%

Section: Dynamics Of the Luminous Corementioning

confidence: 99%