Results 121 to 130 of about 757 (229)

Strong gravitational lensing by $$Sgr A^*$$ S g r A ∗ and $$M87^*$$ M 87 ∗ black holes embedded in dark matter halo exhibiting string cloud and quintessential field

European Physical Journal C: Particles and Fields
We investigate the strong gravitational lensing phenomena caused by a black hole with a dark matter halo in the presence of cloud string and quintessence.
Niyaz Uddin Molla, Himanshu Chaudhary, G. Mustafa, Farruh Atamurotov, Ujjal Debnath, Dhruv Arora   +5 more
doaj   +1 more source

Managing Emotion in Clinical Supervision Through Oller‐Vallejo's Model of Ego States

Journal of Psychiatric and Mental Health Nursing, EarlyView.
ABSTRACT Aim This paper examines the value of Oller‐Vallejo's (2001) ego state model as a framework for understanding emotional dynamics in mental health nursing clinical supervision, and its integration with Proctor's (1986) model of supervision. Background Mental health nursing is characterised by high emotional demand, relational complexity and ...
Paul Linsley, John Hurley
wiley   +1 more source

Innovation and Structural Design in Regionalized Supply Networks

Journal of Supply Chain Management, EarlyView.
ABSTRACT Regionalization is reshaping global supply networks (SNs) as firms respond to geopolitical, economic, and institutional pressures. Yet extant research has not examined how patterns of structural adaptation associated with regionalization may influence innovation. In this paper, we develop a typology of three theoretically grounded archetypes: (
Kevin J. Dooley, David C. Novak, Zhaohui Wu   +2 more
wiley   +1 more source

Precision MARS Mass Reconstruction of A2744: Synergizing the Largest Strong-lensing and Densest Weak-lensing Data Sets from JWST

The Astrophysical Journal
We present a new high-resolution free-form mass model of A2744 that combines both weak-lensing (WL) and strong-lensing (SL) data sets from JWST. The SL data set comprises 286 multiple images, presenting the most extensive SL constraint to date for a ...
Sangjun Cha, Kim HyeongHan, Zachary P. Scofield, Hyungjin Joo, M. James Jee   +4 more
doaj   +1 more source

Confirmation of the impact origin of the Late Ordovician Tvären impact structure (southeast Sweden) and emplacement of impactites in a marine setting

Meteoritics &Planetary Science, EarlyView.
Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska, Sanna Alwmark, Mikael Calner, Sylvain Richoz, Jens Ormö, Erik Sturkell, Carl Alwmark   +6 more
wiley   +1 more source

Inferring Properties of Dark Galactic Halos Using Strongly Lensed Gravitational Waves

The Astrophysical Journal
Gravitational waves (GWs) can be deflected, similarly to electromagnetic (EM) waves, by massive objects through the phenomenon of gravitational lensing .
Eungwang Seo, Tjonnie G. F. Li, Martin A. Hendry   +2 more
doaj   +1 more source

Pushing the limits of detectability: mixed dark matter from strong gravitational lenses. [PDF]

Mon Not R Astron Soc, 2023
Keeley RE, Nierenberg AM, Gilman D, Birrer S, Benson A, Treu T.   +5 more
europepmc   +1 more source

Foreground biases in strong gravitational lensing

Journal of Cosmology and Astroparticle Physics
Abstract Strong gravitational lensing is a competitive tool to probe the dark matter and energy content of the Universe. However, significant uncertainties can arise from the choice of lens model, and in particular the parameterisation of the line of sight.
Daniel Johnson, Pierre Fleury, Julien Larena, Lucia Marchetti   +3 more
openaire   +5 more sources

Polymict melt‐bearing breccia dikes in the Morokweng impact structure formed by slip‐induced mechanical mixing of pseudotachylite and cataclasite along large‐displacement impact faults

Meteoritics &Planetary Science, EarlyView.
Abstract A core drilled through shocked and faulted Archean granitoid gneisses and dolerites in the eroded peak ring of the 70–80 km diameter Morokweng impact structure intersects multiple centimeter‐ to meter‐wide clastic‐matrix breccias containing a polymict clast population of lithic and mineral clasts and altered, millimeter‐ to centimeter ‐size ...
Roger L. Gibson, S'lindile S. Wela, Leonidas C. Vonopartis, Marco A. G. Andreoli   +3 more
wiley   +1 more source

Strong Gravitational Lensing with MeerKAT

Our view of the cosmic evolution of neutral hydrogen and the hydroxyl molecule in galaxies is being transformed through deep surveys with SKA precursors/pathfinders.  Strong gravitational lensing can enable a deeper tier to the ongoing and planned spectral line surveys, without some of the associated calibration risks posed by several thousand-hour ...
openaire   +1 more source