Results 71 to 80 of about 59,945 (291)

Time delay of photons coupled to Weyl tensor in a regular phantom black hole

European Physical Journal C: Particles and Fields, 2020
Time delay of the photons coupled to the Weyl tensor in a regular phantom black hole is investigated in both weak and strong deflection gravitational lensing. We find that the time delay in the weak deflection lensing strongly depends on the phantom hair
Xu Lu, Yi Xie
doaj   +1 more source

Analytical approach to strong gravitational lensing from ultracompact objects [PDF]

Physical Review D, 2019
Strong gravitational lensing from black holes results in the formation of relativistic images, in particular, relativistic Einstein rings. For objects with event horizons, the radius of the unstable light ring (photon sphere) is the lowest radius at ...
R. Shaikh, Pritam Banerjee, Suvankar Paul, T. Sarkar   +3 more
semanticscholar   +1 more source

THE EFFECT OF ENVIRONMENT ON SHEAR IN STRONG GRAVITATIONAL LENSES [PDF]

The Astrophysical Journal, 2010
Accepted for publication in The Astrophysical Journal; 28 pages, 9 figures, 5 ...
Wong, Kenneth C., Keeton, Charles R., Williams, Kurtis A., Momcheva, Ivelina G., Zabludoff, Ann I.   +4 more
openaire   +4 more sources

Roulette‐Inspired Physical Unclonable Functions: Stochastic yet Deterministic Multi‐Bit Patterning through the Solutal Marangoni Effect

Advanced Functional Materials, EarlyView.
Geometric multi‐bit patterning based on dynamic wetting and dewetting phenomena creates roulette‐like Physical Unclonable Function (PUF) labels with stochastic yet deterministic properties. This method leverages the solutal‐Marangoni effect for high randomness while achieving deterministic multinary patterns through polygonal confinement of binary ...
Yeongin Cho, Jeongsu Pyeon, Hanhwi Jang, Gwangsik Mun, Jaimin Kang, Byong‐Guk Park, Geon Yeong Kim, Hyoungsoo Kim, Yeon Sik Jung   +8 more
wiley   +1 more source

Constraining the Rastall parameters in static space–times with galaxy-scale strong gravitational lensing [PDF]

Monthly notices of the Royal Astronomical Society, 2019
Recently, Rastall gravity has undergone a significant surge in popularity. We obtain a power-law total mass-density profile for the inner region (within several effective radius) of early-type galaxies (ETGs) from the space-time structures which are ...
Rui Li, Jian-cheng Wang, Zhaoyi Xu, Xiaotong Guo   +3 more
semanticscholar   +1 more source

Effective Manipulation of Water Droplets on Open Superhydrophobic Glass Surfaces by Using a Triboelectrically Charged Polytetrafluoroethylene Rod on the Back Side of These Surfaces

Advanced Materials Interfaces, EarlyView.
The movement of pure water droplets on a superhydrophobic glass surface is precisely controlled through electrostatic manipulation using a polytetrafluoroethylene (PTFE) rod from the opposite side. With just a few seconds of triboelectric charging, the PTFE rod directs droplets, achieving acceleration over 10 000 mm s−2.
Wei Chen Huang, Ming Yen Chang, Jiann Shieh, Chun Hung Lin, Chin Chi Hsu   +4 more
wiley   +1 more source

COOL-LAMPS. Discovery of COOL J0335−1927, a Gravitationally Lensed Quasar at z = 3.27 with an Image Separation of 23.″3

The Astrophysical Journal Letters, 2023
We report the discovery of COOL J0335−1927, a quasar at z = 3.27 lensed into three images with a maximum separation of 23.″3 by a galaxy cluster at z = 0.4178. To date, this is the highest redshift wide-separation lensed quasar known.
Kate Napier, Michael D. Gladders, Keren Sharon, Håkon Dahle, Aidan P. Cloonan, Guillaume Mahler, Isaiah Escapa, Josh Garza, Andrew Kisare, Natalie Malagon, Simon Mork, Kunwanhui Niu, Riley Rosener, Jamar Sullivan Jr., Marie Tagliavia, Marcos Tamargo-Arizmendi, Raul Teixeira, Kabelo Tsiane, Grace Wagner, Yunchong Zhang, Megan Zhao   +20 more
doaj   +1 more source

Anisotropic Wetting Behavior on Gradient Surface Structures Fabricated by Direct Laser Interference Patterning on Stainless Steel

Advanced Materials Interfaces, EarlyView.
In this work, anisotropic line‐like textures with gradually increasing spatial periods from 2.0 to 4.8 µm are fabricated on stainless steel by two‐beam Direct Laser Interference Patterning using a picosecond (ps)laser source. The spontaneous motion of water droplets deposited on these gradient structures in the direction of increasing periodicity is ...
Tianhao Wu, Marcos Soldera, Bogdan Voisiat, Ignacio Tabares, Andrés Fabián Lasagni   +4 more
wiley   +1 more source

Harnessing Unresolved Lensed Quasars: The Mathematical Foundation of the Fluctuation Curve

The Astrophysical Journal, 2023
Strong gravitational lensed quasars (QSOs) have emerged as powerful and novel cosmic probes as they can deliver crucial cosmological information, such as a measurement of the Hubble constant, independent of other probes. Although the upcoming LSST survey
Satadru Bag, Wuhyun Sohn, Arman Shafieloo, Kai Liao   +3 more
doaj   +1 more source

Targeted Local Delivery via Fiber‐Embedded Flexible Microchannels Integrated with Film‐Based Implantable Probes

Advanced Materials Technologies, EarlyView.
In this study, a fiber‐embedded drug delivery channel for implantable microprobes, demonstrating the first functional drug delivery system using flexible LCP‐based probes, is developed. The design incorporates fibers for site‐selective drug delivery and electrical functions. The utilization of monolithic thermal bonding simplifies fabrication.
Jaehwan Byun, Jungseub Lee, Hyun Ryul Ryu, Geun Jae Lee, Sung Eun Lee, Sung June Kim, Noo Li Jeon   +6 more
wiley   +1 more source