Results 41 to 50 of about 1,324 (259)

The properties of primordially-seeded black holes and their hosts in the first billion years: implications for JWST

Astronomy & Astrophysics
Aims. James Webb Space Telescope (JWST) observations have opened a tantalising new window onto possible black holes as early as redshifts of z ∼ 10.4.
Dayal Pratika, Maiolino Roberto
doaj   +1 more source

Gravitational Microlensing Events Due to Stellar‐Mass Black Holes [PDF]

The Astrophysical Journal, 2002
We present an analysis of the longest timescale microlensing events discovered by the MACHO Collaboration during a 7 year survey of the Galactic bulge. We find 6 events that exhibit very strong microlensing parallax signals due, in part, to accurate photometric data from the GMAN and MPS collaborations. The microlensing parallax fit parameters are used
Bennett, D P, Becker, Andrew C, Quinn, J M W, Tomaney, A B, Alcock, Charles, Allsman, Robyn, Alves, David R, Axelrod, Tim, Calitz, J., Cook, Kem H, Drake, Andrew J, Fragile, P C, Freeman, Kenneth, Geha, M, Griest, K, Johnson, B Ronald, Keller, S C, Laws, C, Lehner, M J, Marshall, S L, Minniti, Dante, Nelson, C A, Peterson, Bruce, Popowski, P, Pratt, M, Quinn, Peter J, Rhie, S., Stubbs, Christopher W, Sutherland, William J, Vandehei, T, Welch, D L   +30 more
openaire   +4 more sources

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

FEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli, Mohammad Nour Alsamsam, Ugnė Bagdonaitė, Van Truc Vu, Chun‐Jen Huang, Polina Kuzhir, Mindaugas Zaremba, Aurimas Kopūstas, Marijonas Tutkus   +8 more
wiley   +1 more source

Jets from a stellar-mass black hole are as relativistic as those from supermassive black holes

Nature Communications
Relativistic jets from supermassive black holes in active galactic nuclei are amongst the most powerful phenomena in the universe. Similar jets from stellar-mass black holes offer a chance to study the phenomena on accessible observation time scales ...
X. Zhang, W. Yu, F. Carotenuto, R. Fender, S. Motta, A. Bahramian, J. C. A. Miller-Jones, T. D. Russell, S. Corbel, P. A. Woudt, P. Atri, C. Knigge, G. R. Sivakoff, A. K. Hughes, J. van den Eijnden, J. H. Matthews, M. C. Baglio, P. Saikia   +17 more
doaj   +1 more source

The High Energy X-ray Probe (HEX-P): probing accretion onto stellar mass black holes

Frontiers in Astronomy and Space Sciences
Accretion is a universal astrophysical process that plays a key role in cosmic history, from the epoch of reionization to galaxy and stellar formation and evolution. Accreting stellar-mass black holes in X-ray binaries are one of the best laboratories to
Riley M. T. Connors, John A. Tomsick, Paul Draghis, Benjamin Coughenour, Aarran W. Shaw, Javier A. García, Javier A. García, Dominic Walton, Kristin Madsen, Daniel Stern, Nicole Cavero Rodriguez, Thomas Dauser, Melania Del Santo, Jiachen Jiang, Henric Krawczynski, Honghui Liu, Joseph Neilsen, Michael Nowak, Sean Pike, Andrea Santangelo, Navin Sridhar, Navin Sridhar, Navin Sridhar, Andrew West, Jörn Wilms   +24 more
doaj   +1 more source

Black holes in stellar-mass binary systems: expiating original spin? [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
Accepted for publication in MNRAS in original form.
King, A., Nixon, C.
openaire   +3 more sources

Solid‐State Diffusion and Intermetallic Phase Formation in Roll‐Bonded Mg–Zn Composites With Kirigami‐Patterned Inlay

Advanced Engineering Materials, EarlyView.
Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov, Oleksandr Bobukh, Christian Klose, Florian Nürnberger, Hans Jürgen Maier   +4 more
wiley   +1 more source

Supermassive Black Hole Growth in Hierarchically Merging Nuclear Star Clusters

The Astrophysical Journal
Supermassive black holes are prevalent at the centers of massive galaxies, and their masses scale with galaxy properties, increasing evidence suggesting that these trends continue to low stellar masses.
Konstantinos Kritos, Ricarda S. Beckmann, Joseph Silk, Emanuele Berti, Sophia Yi, Marta Volonteri, Yohan Dubois, Julien Devriendt   +7 more
doaj   +1 more source

A Global Inventory of Feedback

Galaxies, 2023
Feedback from both supermassive black holes and massive stars plays a fundamental role in the evolution of galaxies and the inter-galactic medium. In this paper, we use available data to estimate the total amount of kinetic energy and momentum created ...
Timothy M. Heckman, Philip N. Best
doaj   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source