Results 61 to 70 of about 33,060 (268)

Star Formation under a Cosmic Microscope: Highly Magnified z = 11 Galaxy behind the Bullet Cluster

The Astrophysical Journal Letters
We present measurements of stellar population properties of a newly discovered, spectroscopically confirmed, $z=11.1{0}_{-0.26}^{+0.11}$ , gravitationally lensed galaxy, using JWST NIRSpec PRISM spectroscopy and NIRCam imaging.
Maruša Bradač, Jon Judež, Chris Willott, Gregor Rihtaršic, Nicholas S. Martis, Anishya Harshan, Giordano Felicioni, Yoshihisa Asada, Guillaume Desprez, Douglas Clowe, Anthony H. Gonzalez, Christine Jones, Brian C. Lemaux, Maxim Markevitch, Vladan Markov, Lamiya Mowla, Gaël Noirot, Annika H. G. Peter, Andrew Robertson, Ghassan T. E. Sarrouh, Marcin Sawicki, Tim Schrabback, Roberta Tripodi   +22 more
doaj   +1 more source

Study of Free‐Space Optical Quantum Network: Review and Prospectives

Advanced Science, EarlyView.
Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley   +1 more source

An Opacity-free Test of the Cosmic Distance Duality Relation Using Strongly Lensed Gravitational-wave Signals with Space-based Detector Networks

The Astrophysical Journal
The cosmic distance duality relation (CDDR), expressed as d _L ( z ) = (1 +  z ) ^2 D _A ( z ), is a fundamental relation in modern cosmology. In this work, we apply a method to test the CDDR using simulated strongly lensed gravitational-wave (SLGW ...
Yong Yuan, Minghui Du, Benyang Zhu, Xin-Yi Lin, Wen-Fan Feng, Peng Xu, Xilong Fan   +6 more
doaj   +1 more source

Light‑Driven Propulsion of Graphene Aerogels in Microgravity

Advanced Science, EarlyView.
Ultralight graphene aerogels convert laser light into thrust. Parabolic‐flight experiments directly compare their motion in microgravity and at 1 g, revealing order‐of‐magnitude enhancements in distance, velocity, and transient thrust when weight and friction are removed (∼50 times enhancement).
Omnia Khattab, Rami Elkaffas, Basel Altawil, Omar Alsuwaidi, Afnan Almubashir, Claire Perfetti, Shanavas Shajahan, Marco Braibanti, Sean Swei, Carlo Saverio Iorio, Yarjan Abdul Samad   +10 more
wiley   +1 more source

Strong Gravitational Lensing: Bright Galaxies & Lost Dark-Matter [PDF]

Proceedings of the International Astronomical Union, 2007
AbstractGravitational lensing and stellar dynamics provide two complementary methods to probe the smooth and clumpy stellar and dark-matter mass distribution in early-type galaxies, currently already over a range of two orders of magnitude in virial mass, more than ten orders of magnidude in dynamic mass range in each galaxy (i.e.
openaire   +2 more sources

Quasar Milli-lensing and Cold Dark Matter (TNG50) Subhaloes. I. Image Splitting

The Astrophysical Journal
We use numerical mass density profiles from the TNG50 simulation to study the impact of gravitational milli-lensing by dark matter subhaloes on the images of lensed quasars.
E. Mediavilla, J. Jiménez-Vicente, F. M. Heinze, J. Martín Camalich   +3 more
doaj   +1 more source

Cusp-core problem and strong gravitational lensing

, 2009
Cosmological numerical simulations of galaxy formation have led to the cuspy density profile of a pure cold dark matter halo toward the center, which is in sharp contradiction with the observations of the rotation curves of cold dark matter-dominated ...
Bartelmann, Begeman, Burkert, Chae, Chen, Chen, Chen, Chen, Chen, Chen, Cooray, Da-Ming Chen, de Blok, de Blok, El-Zant, Falco, Fukugita, Fukugita, Gentile, Inada, Jing, Jing, Kazantzidis, Keeton, Keeton, Keeton, Keeton, Kuzio de Naray, Li, Li, Longair, McGaugh, Nan Li, Navarro, Oguri, Oguri, Oguri, Park, Patnaik, Romano-Diaz, Salucci, Sarbu, Schneider, Simon, Swaters, Tonini, Weinberg, Wen, Wu, Wu, Zhang, Zhang, Zhang   +52 more
core   +1 more source

Modeling the separation of water‐in‐oil emulsions in continuously fed gravity settlers using millifluidic experiments

AIChE Journal, EarlyView.
Abstract Emulsion separation remains a persistent challenge in chemical and process industries due to the metastable nature of dispersed droplets. In gravity separators, the overall separation rate is governed by the formation of a densely packed zone (DPZ) of deforming and coalescing droplets that mediates between the dispersed and continuous phases ...
Andrei Zlobin, José Esteban Andino‐Enriquez, Thomas Gouëzec, Maurice Bourrel, Enric Santanach‐Carreras, Nicolas Passade‐Boupat, Laurence Talini, François Lequeux, Pascal Panizza   +8 more
wiley   +1 more source

Strong Gravitational-wave Lensing Posterior Odds

The Astrophysical Journal
Like light, gravitational waves are gravitationally lensed by intervening massive astrophysical objects—such as galaxies, clusters, black holes, and stars—resulting in a variety of potentially observable gravitational-wave lensing signatures.
Otto A. Hannuksela, K. Haris, Justin Janquart, Harsh Narola, Hemantakumar Phurailatpam, Jolien D. E. Creighton, Chris Van Den Broeck   +6 more
doaj   +1 more source

Finding diamonds in the rough: Targeted Sub-threshold Search for Strongly-lensed Gravitational-wave Events

, 2021
Strong gravitational lensing of gravitational waves can produce duplicate signals separated in time with different amplitudes. We consider the case in which strong lensing produces identifiable gravitational-wave events and weaker sub-threshold signals ...
Chan, C. L., Li, Alvin K. Y., Li, Tjonnie G. F., Lin, E. T., Lo, Rico K. L., Sachdev, Surabhi, Weinstein, Alan J.   +6 more
core