Results 141 to 150 of about 745,401 (375)

S-Duality at the Black Hole Threshold in Gravitational Collapse

, 1995
We study gravitational collapse of the axion/dilaton field in classical low energy string theory, at the threshold for black hole formation. A new critical solution is derived that is spherically symmetric and continuously self-similar.
A. Sen, A.M. Abrahams, A.M. Abrahams, Douglas M. Eardley, Eric W. Hirschmann, J.H. Schwarz, James H. Horne   +6 more
core   +1 more source

Enhancing event stratigraphic correlations in the ultra‐deep Japan Trench using XRF‐CS cluster‐based chemostratigraphy

The Depositional Record, EarlyView.
Cluster‐based chemostratigraphy using XRF‐CS enables high‐resolution correlation of event deposits across contrasting depositional settings in the Japan Trench. This approach reveals previously unrecognised events and compositional heterogeneity, offering new insights into sediment provenance and earthquake‐triggered deposition, with implications for ...
Jyh‐Jaan Steven Huang, Charlotte Pizer, Jun‐Ting Lin, Ken Ikehara, Michael Strasser   +4 more
wiley   +1 more source

Responses of the Brans-Dicke field due to gravitational collapses

, 2010
We study responses of the Brans-Dicke field due to gravitational collapses of scalar field pulses using numerical simulations. Double-null formalism is employed to implement the numerical simulations.
Ashtekar A, d'Inverno R, Dong-han Yeom, Dong-il Hwang, Doroshkevich A Hansen J Novikov D Novikov I Shatskiy A, Doroshkevich A Hansen J Novikov I Shatskiy A, Fujii Y, Hamade R S, Hansen J, Hayward S A, Hong S E, Press W H, Wald R M   +12 more
core   +1 more source

Failure characteristics analysis of the inclined interlayer during water‐soluble cavity construction of underground salt caverns for large‐scale energy storage

Deep Underground Science and Engineering, EarlyView.
In the process of water‐soluble cavern construction of salt cavern energy storage, since the interlayer does not dissolve in water easily, sudden collapse will cause engineering accidents such as bending and damage of the inner tube of the cavern.
Zenghui Zhao, Tianyu Li, Qing Ma, Junlong Shang, Jiaze Du, Ruizhe He   +5 more
wiley   +1 more source

A new perspective on gravitational collapse: a comprehensive analysis using $$\Theta $$ Θ parametrization

European Physical Journal C: Particles and Fields
In this article, we have studied some new facets of gravitational collapse, beyond conventional notions of black holes, and naked singularities. The present work is focused on the unresolved problems of theoretical physics concerning the final fate of ...
Rajesh Kumar, Annu Jaiswal, Sudhir Kumar Srivastava, Shibesh Kumar Jas Pacif   +3 more
doaj   +1 more source

Gravitational Radiation from Cylindrical Naked Singularity

, 2005
We construct an approximate solution which describes the gravitational emission from a naked singularity formed by the gravitational collapse of a cylindrical thick shell composed of dust. The assumed situation is that the collapsing speed of the dust is
C. Cutler, K. Nakao, K. S. Thorne, Ken-ichi Nakao, P. Joshi, R. Penrose, R. M. Wald, S. W. Hawking, S. W. Hawking, T. Nakamura, T. Nakamura, T. Nakamura, T. A. Morgan, Yoshiyuki Morisawa   +13 more
core   +1 more source

Gravitational Collapse

, 1997
40pages, latex, one eps figure included, appeared in `Singularities, Black Holes and Cosmic Censorship' (On the fortieth anniversary of the Raychaudhuri Equation), IUCAA publication, Pune ...
openaire   +2 more sources

Instability mechanism and failure characteristics of underground cavern in block system under the action of seismic waves

Deep Underground Science and Engineering, EarlyView.
Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang, Jinxiao Liu, Gaoshuo Zhang, Wenxin Li, Changdi He   +4 more
wiley   +1 more source

Gravitational Collapse of Massless Fields in an Expanding Universe

EPJ Web of Conferences, 2018
Gravitational collapse of a massless scalar field with the periodic boundary condition in a cubic box is reported. This system can be regarded as a lattice universe model.
Yoo Chul-Moon
doaj   +1 more source

Seismic Structural Response and Loss Estimation for Dense Urban Districts Using Neural Network Parameterized Gaussian Process

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Earthquakes pose a major threat to urban areas, causing fatalities, injuries, and significant economic losses. This study proposes a Gaussian process parametrized by deep neural networks (DNN–GP) as an efficient surrogate for assessing seismic losses of building structures at a regional scale.
Byeongseong Choi, Sang‐ri Yi, Taeyong Kim   +2 more
wiley   +1 more source