Results 61 to 70 of about 28,835 (313)

GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs

open access: yesPhysical Review X, 2019
We present the results from three gravitational-wave searches for coalescing compact binaries with component masses above 1  M_{⊙} during the first and second observing runs of the advanced gravitational-wave detector network.
B. P. Abbott   +1148 more
doaj   +1 more source

Upper limits on the temperature of inspiraling astrophysical black holes

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We present a method to constrain the temperature of astrophysical black holes through detecting the inspiral phase of binary black hole coalescences.
Adrian Ka-Wai Chung, Mairi Sakellariadou
doaj   +1 more source

Gravitational synchrotron radiation and Penrose process in STVG theory

open access: yesPhysics Letters B, 2023
The paper has explored analogue of gravitational synchrotron massive particle and Penrose process in MOdified Gravity (MOG) known as Scalar-Tensor-Vector-Gravity (STVG).
Bobur Turimov   +3 more
doaj   +1 more source

Dual Jets from Binary Black Holes [PDF]

open access: yesScience, 2010
When Black Holes Collide When galaxies merge, their central black holes interact, initially coming together in a binary system and eventually coalescing into one single black hole. The dynamics of orbiting binary black holes in vacuum is well understood; however, when black holes merge, their accretion disks are expected to ...
Palenzuela, Carlos   +2 more
openaire   +3 more sources

Multi‐Functional ZnO–Te Heterojunction Devices Enabling Compact Frequency Quadrupler

open access: yesAdvanced Functional Materials, EarlyView.
Wafer‐scale ZnO–Te heterojunction devices featuring tunable double negative differential transconductance (D‐NDT) are demonstrated at ≤ 200°C. Leveraging this unique characteristic, a single‐stage frequency quadrupler is realized, achieving a 64%–75% reduction in device count.
Jae Hyeon Jun   +8 more
wiley   +1 more source

Galactic black hole binaries: Multifrequency connections [PDF]

open access: yesAIP Conference Proceedings, 1997
Revised on August 6, 1997, 22 pages, 6 figures, 1 table. Invited review paper for the 4th Compton Symposium, eds. C. D. Dermer and J. D. Kurfess, Williamsburg, VA, April, 1997.
Zhang, S. N.   +6 more
openaire   +2 more sources

A New 3D Colon on a Chip to Decipher the Influence of Mechanical Forces on the Physiological Cellular Ecosystem

open access: yesAdvanced Healthcare Materials, EarlyView.
To dissect how mechanical forces influence intestinal physiology, we developed a stretchable 3D colon‐on‐chip that integrates tunable topography, stiffness and peristalsis‐like motion within a physiologically relevant microenvironment. We showed that stretching is a dominant factor governing epithelial behavior, markedly enhancing proliferation and ...
Moencopi Bernheim‐Dennery   +10 more
wiley   +1 more source

A possible quantum gravity hint in binary black hole merger

open access: yesPhysics Letters B
We present a semi-rigorous justification of Bekenstein's Generalized Second Law of Thermodynamics applicable to a universe with black holes present, based on a generic quantum gravity formulation of a black hole spacetime, where the bulk Hamiltonian ...
Parthasarathi Majumdar
doaj   +1 more source

Binary Black Hole Mergers: Formation and Populations

open access: yesFrontiers in Astronomy and Space Sciences, 2020
We review the main physical processes that lead to the formation of stellar binary black holes (BBHs) and to their merger. BBHs can form from the isolated evolution of massive binary stars.
Michela Mapelli   +2 more
doaj   +1 more source

LAST ORBITS OF BINARY BLACK HOLES [PDF]

open access: yesInternational Journal of Modern Physics A, 2002
Binary black hole systems in the pre-coalescence stage are numerically constructed by demanding that the associated spacetime admits a helical Killing vector. Comparison with third order post-Newtonian calculations indicates a rather good agreement until the innermost stable circular orbit.
Gourgoulhon, Eric   +2 more
openaire   +2 more sources

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