Results 71 to 80 of about 1,027,197 (339)

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

Jet Archaeology and Forecasting: Image Variability and Magnetic Field Configuration

The Astrophysical Journal
We investigate how magnetic field variations around accreting black holes (BHs) on event horizon scales affect the morphology of magnetically driven jets on larger scales.
Yuh Tsunetoe, Ramesh Narayan, Angelo Ricarte   +2 more
doaj   +1 more source

Static Axially Symmetric Einstein-Yang-Mills-Dilaton Solutions: II.Black Hole Solutions

, 1997
We discuss the new class of static axially symmetric black hole solutions obtained recently in Einstein-Yang-Mills and Einstein-Yang-Mills-dilaton theory. These black hole solutions are asymptotically flat and they possess a regular event horizon.
A. E. Mayo, B. Kleihaus, B. Kleihaus, B. Kleihaus, B. Kleihaus, B. Kleihaus, B. Kleihaus, B. Kleihaus, B. Kleihaus, B. Kleihaus, Burkhard Kleihaus, C. J. Houghton, C. J. Houghton, C. J. Houghton, C. Rebbi, D. C. Robinson, D. Garfinkle, D. Kramer, E. Braaten, E. E. Donets, G. Lavrelashvili, G. W. Gibbons, H. P. Künzle, J. A. Smoller, J. Kunz, Jutta Kunz, M. S. Volkov, M. S. Volkov, N. J. Hitchin, N. Straumann, N. Straumann, N. Straumann, O. Brodbeck, O. Brodbeck, P. Bizon, P. Bizon, P. Breitenlohner, P. Breitenlohner, P. Mazur, R. A. Battye, R. Bartnik, R. M. Wald, S. A. Ridgway, S. Weinberg, W. Israel, W. Schönauer, Y. Brihaye   +46 more
core   +1 more source

Primordial black holes [PDF]

Research in Astronomy and Astrophysics, 2010
Invited contribution to Recent Advances on the Physics of Compact Objects and Grvitational Waves, 2007, Ed.
openaire   +3 more sources

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

Advanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar, Matthew Large, Andrea Ciavatti, Laura Basiricò, Beatrice Fraboni, Paul J. Sellin, Attila J. Mozer, Marco Petasecca, Matthew J. Griffith   +8 more
wiley   +1 more source

Mildly Super-Eddington Accretion onto Slowly Spinning Black Holes Explains the X-Ray Weakness of the Little Red Dots

The Astrophysical Journal
JWST has revealed a population of low-luminosity active galactic nuclei at z > 4 in compact, red hosts (the “Little Red Dots,” or LRDs), which are largely undetected in X-rays.
Fabio Pacucci, Ramesh Narayan
doaj   +1 more source

Optical and thermodynamic properties of a rotating dyonic black hole spacetime in $${\mathcal {N}} = 2, U(1)^2$$ N = 2 , U ( 1 ) 2 gauged supergravity

European Physical Journal C: Particles and Fields, 2021
The null geodesics and the distance of closest approach for photon around a rotating dyonic black hole in $${\mathcal {N}} = 2, U(1)^2$$ N = 2 , U ( 1 ) 2 gauged supergravity is studied.
Prateek Sharma, Hemwati Nandan, Uma Papnoi, Arindam Kumar Chatterjee   +3 more
doaj   +1 more source

Phantom Energy Accretion by Stringy Charged Black Hole

, 2012
We investigate the dynamical behavior of phantom energy near stringy magnetically charged black hole. For this purpose, we derive equations of motion for steady-state spherically symmetric flow of phantom energy onto the stringy magnetically charged ...
Bennett C L, Bondi H, Cai R, G. Abbas, Hinshaw G, M. Sharif, Perlmutter S, Perlmutter S, Radinschi I, Riess A G, Sharif M, Sharif M   +11 more
core   +1 more source

NANOGrav Data Hints at Primordial Black Holes as Dark Matter [PDF]

, 2021
Valerio De Luca, Gabriele Franciolini, Antonio Riotto   +2 more
openalex   +1 more source

Black Holes

, 2002
43 pages, springer style, several ps files. to appear in the proceedings of the Tuebingen conference on conformal structure of space-time, J. Frauendiener, H.
openaire   +2 more sources