Results 81 to 90 of about 375,984 (375)

Constraining astrophysical observables of galaxy and supermassive black hole binary mergers using pulsar timing arrays [PDF]

Monthly notices of the Royal Astronomical Society, 2018
We present an analytic model to describe the supermassive black hole binary (SMBHB) merger rate in the Universe with astrophysical observables: galaxy stellar mass function, pair fraction, merger time-scale, and black hole–host galaxy relations.
Siyuan Chen, A. Sesana, C. Conselice
semanticscholar   +1 more source

Formation of Globular Clusters in Galaxy Mergers [PDF]

Highlights of Astronomy, 2005
AbstractOur numerical simulations first demonstrate that the pressure of ISM in a major merger becomes so high (> 105 kB K cm-3) that GMCs in the merger can collapse to form globular clusters (GCs) within a few Myr. The star formation efficiency within a GMC in galaxy mergers can rise up from a few percent to ~ 80 percent, depending on the shapes ...
Kenji Bekki, Warrick J. Couch, Duncan A. Forbes, Michael A. Beasley   +3 more
openaire   +3 more sources

Edible Pneumatic Battery for Sustained and Repeated Robot Actuation

Advanced Science, EarlyView.
This work presents an edible energy source and valve system to power soft, pneumatically driven edible robots. A chemical reaction between sodium bicarbonate and citric acid generates carbon dioxide gas, and a pressure‐triggered edible valve enables self‐repetitive motion of the edible actuator.
Bokeon Kwak, Shuhang Zhang, Alexander Keller, Qiukai Qi, Jonathan Rossiter, Dario Floreano   +5 more
wiley   +1 more source

Detection Rate of Galaxy Cluster-lensed Stellar Binary Black Hole Mergers by the Third-generation Gravitational-wave Detectors

The Astrophysical Journal
Gravitational waves (GWs) from stellar binary black hole (sBBH) mergers can be strongly gravitational lensed by intervening galaxies/galaxy clusters. Only a few works have investigated cluster-lensed sBBH mergers by adopting oversimplified models, while ...
Zhiwei Chen, Yushan Xie, Youjun Lu, Huanyuan Shan, Nan Li, Yuchao Luo, Xiao Guo   +6 more
doaj   +1 more source

Massive Black Hole Binaries: Dynamical Evolution and Observational Signatures

Advances in Astronomy, 2012
The study of the dynamical evolution of massive black hole pairs in mergers is crucial in the context of a hierarchical galaxy formation scenario. The timescales for the formation and the coalescence of black hole binaries are still poorly constrained ...
M. Dotti, A. Sesana, R. Decarli
doaj   +1 more source

Growth and activity of black holes in galaxy mergers with varying mass ratios [PDF]

, 2014
We study supermassive black holes (BHs) in merging galaxies, using a suite of hydrodynamical simulations with very high spatial (~10 pc) and temporal (~1 Myr) resolution, where we vary the initial mass ratio, the orbital configuration, and the gas ...
Pedro R. Capelo, M. Volonteri, M. Dotti, J. Bellovary, L. Mayer, F. Governato   +5 more
semanticscholar   +1 more source

THE DRIVING MECHANISM OF STARBURSTS IN GALAXY MERGERS [PDF]

The Astrophysical Journal, 2010
16 pages, 5 figures, submitted to ApJL, revised version after referee ...
Teyssier, R, Chapon, D, Bournaud, F
openaire   +5 more sources

Episodic activities of supermassive black holes at redshift $z\le 2$: driven by mergers?

, 2010
It has been suggested for quite a long time that galaxy mergers trigger activities of supermassive black holes (SMBHs) on the grounds of imaging observations of individual galaxies.
Alexander, Barnes, Bentz, Berti, Chatzichristou, Chen Hu, Corbin, Cox, Dahlen, De Robertis, Erwin, Faber, Ferrarese, Ferrarese, Förster Schreiber, Gebhardt, Genzel, Haehnelt, Haiman, Hopkins, Hopkins, Hopkins, Hopkins, Hopkins, Hopkins, Hughes, Häring, Jahnke, Jian-Min Wang, Kim, King, King, Kinney, Kollmeier, Lacey, Lauer, Lin, Magorrian, Marconi, Marconi, Martini, Martini, Munoz Marin, Netzer, Reichard, Robaina, Ryan, Schmitt, Shemmer, Shen, Shen, Shields, Shields, Shu Zhang, Soltan, Springel, Tacconi ., Tacconi ., Taniguchi, Toomre, Tremaine, Volonteri, Volonteri, Wang, Wang, Wang, Wang, Wyithe, Wyithe, Yan-Rong Li, Ye-Fei Yuan   +70 more
core   +1 more source

The Effect of Gas Fraction on the Morphology and Time-scales of Disc Galaxy Mergers [PDF]

, 2009
Gas-rich galaxy mergers are more easily identified by their disturbed morphologies than mergers with less gas. Because the typical gas fraction of galaxy mergers is expected to increase with redshift, the under-counting of low gas-fraction mergers may ...
Abazajian, Abraham, Barden, Barnes, Barnes, Bell, Bell, Bell, Bournaud, Bournaud, Boylan-Kolchin, Boylan-Kolchin, Brinchmann, Brown, Bundy, Bundy, Cassata, Conselice, Conselice, Conselice, Cox, Cox, Cox, Cox, Cox, Daddi, De Ravel, Di Matteo, Di Matteo, Erb, Erb, Faber, Hopkins, Hopkins, Hopkins, Jennifer M. Lotz, Joel R. Primack, Jogee, Johansson, Jonsson, Jonsson, Jonsson, Katz, Kennicutt, Khalatyan, Le Fèvre, Leitherer, Lin, Lin, Lopez-Sanjuan, Lotz, Lotz, Lotz, Lotz, Martig, Melbourne, Mihos, Naab, Naab, Noekse, Patrik Jonsson, Patton, Robertson, Robertson, Rocha, Shi, Sinha, Springel, Springel, Springel, T. J. Cox, Tacconi, Van Dokkum, Wetzstein   +73 more
core   +1 more source

Parametric Design of Continuum Robots Using Interlocking Ball Joints

Advanced Intelligent Systems, EarlyView.
Herein, a parametric design methodology is introduced for producing a wide variety of modular ball joint‐based continuum robots. It is demonstrate by designing a magnetically actuated continuum robot for cardiac ablations. The methodology is released as an open‐source computer‐assisted design extension that automatically designs continuum robots based ...
Alexandre Mesot, Quentin Boehler, Florian Heemeyer, Sean Lyttle, Buse Aktaş, Bradley J. Nelson   +5 more
wiley   +1 more source