Results 71 to 80 of about 93,562 (275)

Three little pieces for computer and relativity

, 2013
Numerical relativity has made big strides over the last decade. A number of problems that have plagued the field for years have now been mostly solved.
A Ashtekar, A Ashtekar, A Ashtekar, A Peres, A Tiec Le, AA Abdo, AG Wiseman, B Giacomazzo, B Giacomazzo, B Giacomazzo, B Giacomazzo, B Paczynski, C Bona, C Kouveliotou, CM Yoo, CO Lousto, CO Lousto, D Alic, D Alic, D Eichler, D Müller, D Pollney, D Pollney, D Radice, D Radice, D Radice, D Radice, DA Nichols, DB Fox, DH Rischke, DM Eardley, E Nakar, E Rossi, E Schnetter, E Schnetter, EWM Chow, F Herrmann, F Peng, F Pretorius, G Lesur, G Lovelace, G Toth, H Yoshino, HK Lee, HP Oliveira de, HP Pfeiffer, I Robinson, J Abadie, J Centrella, J Granot, J Granot, J Granot, J Healy, J Podolsky, J Zrake, JA Gonzalez, JA Gonzalez, JC McKinney, JD Bjorken, JD Schnittman, JG Baker, JG Baker, JL Jaramillo, JL Jaramillo, JMM Senovilla, JS Bloom, JX Prochaska, K Hotokezaka, K Kiuchi, KJ Jin, KP Tod, L Antón, L Baiotti, L Baiotti, L Baiotti, L Baiotti, L Dessart, L Rezzolla, L Rezzolla, L Rezzolla, L Rezzolla, L Rezzolla, M Ackermann, M Alcubierre, M Anderson, M Campanelli, M Campanelli, M Campanelli, M Obergaulinger, M Pasquale De, M Ruffert, M Shibata, M Shibata, M Shibata, MA Aloy, MA Aloy, MB Wan, MJ Fitchett, MW Choptuik, P Blasi, P Huovinen, PC Argyres, PT Chrusciel, R Birkl, R Narayan, R Oechslin, R Owen, R Penrose, RD Blandford, RF Aranha, RF Aranha, RH Price, RH Price, RM Wald, RP Macedo, S Bernuzzi, S Bernuzzi, S Dimopoulos, S Rosswog, S Setiawan, SA Balbus, SA Hayward, SS Komissarov, SS Komissarov, T Chu, T Kellerman, T Kellerman, T Nakamura, TW Baumgarte, U Sperhake, U Sperhake, U Sperhake, W Natorf, WH Lee, Y Mino, YT Liu, Z Andrade, ZB Etienne   +137 more
core   +1 more source

Numerical Approaches to Spacetime Singularities

Living Reviews in Relativity, 2002
This Living Review updates a previous version which is itself an update of a review article. Numerical exploration of the properties of singularities could, in principle, yield detailed understanding of their nature in physically realistic cases ...
Berger Beverly K.
doaj  

A Novel Logarithmic Approach to General Relativistic Hydrodynamics in Dynamical Spacetimes

Universe
We introduce a novel logarithmic approach within the Baumgarte–Shapiro–Shibata–Nakamura (BSSN) formalism for self-consistently solving the equations of general relativistic hydrodynamics (GRHD) in evolving curved spacetimes. This method employs a “3 + 1”
Mario Imbrogno, Rita Megale, Luca Del Zanna, Sergio Servidio   +3 more
doaj   +1 more source

Developments in GRworkbench

, 2005
The software tool GRworkbench is an ongoing project in visual, numerical General Relativity at The Australian National University. Recently, GRworkbench has been significantly extended to facilitate numerical experimentation in analytically-defined space-
Moylan, A., Scott, S. M., Searle, A. C.
core   +1 more source

Inspiral-merger-ringdown waveforms of spinning, precessing black-hole binaries in the effective-one-body formalism [PDF]

, 2013
We describe a general procedure to generate spinning, precessing waveforms that include inspiral, merger and ringdown stages in the effective-one-body (EOB) approach.
Buonanno, Alessandra, Kidder, Lawrence E., Mroue, Abdul H., Pan, Yi, Pfeiffer, Harald P., Scheel, Mark A., Szilagyi, Bela, Taracchini, Andrea   +7 more
core   +3 more sources

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Finding apparent horizons in numerical relativity [PDF]

Physical Review D, 1996
This paper presents a detailed discussion of the ``Newton's method'' algorithm for finding apparent horizons in 3+1 numerical relativity. We describe a method for computing the Jacobian matrix of the finite differenced $H(h)$ function by symbolically differentiating the finite difference equations, giving the Jacobian elements directly in terms of the ...
openaire   +3 more sources

Characteristic Evolution and Matching

Living Reviews in Relativity, 2005
I review the development of numerical evolution codes for general relativity based upon the characteristic initial value problem. Progress is traced from the early stage of 1D feasibility studies to 2D axisymmetric codes that accurately simulate the ...
Winicour Jeffrey
doaj  

Tau acetylation at K331 has limited impact on tau pathology in vivo

FEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto, Yukio Matsuba, Mika Takahashi, Takaomi C. Saido   +3 more
wiley   +1 more source

A Numerical Relativity Waveform Surrogate Model for Generically Precessing Binary Black Hole Mergers [PDF]

, 2017
A generic, non-eccentric binary black hole (BBH) system emits gravitational waves (GWs) that are completely described by 7 intrinsic parameters: the black hole spin vectors and the ratio of their masses. Simulating a BBH coalescence by solving Einstein's
Blackman, Jonathan, Boyle, Michael, Field, Scott E., Galley, Chad R., Kidder, Lawrence E., Ott, Christian D., Pfeiffer, Harald P., Scheel, Mark A., Szilágyi, Béla   +8 more
core   +2 more sources