Results 41 to 50 of about 168,570 (264)

COOLING AND DETECTABILITY OF NEUTRON STARS [PDF]

open access: yesCanadian Journal of Physics, 1966
Surface properties, temperature effects, cooling behavior, and observability of neutron stars have been studied. For this purpose, the opacity of the surface layers is calculated both for a pure iron and a pure magnesium composition. It is found that the nondegenerate layers are only a few meters thick and in no case exceed 1% of the stellar radius ...
Sachiko Tsuruta, A. G. W. Cameron
openaire   +1 more source

Detecting Primordial Stars [PDF]

open access: yes, 2007
[8 pages, 5 figures] Invited Talk, to appear in IMF@50: The Stellar Initial Mass Function Fifty Years Later, eds E. Corbelli, F. Palla, and H. Zinnecker (Dordrecht: Kluwer)
openaire   +2 more sources

Detecting axion stars with radio telescopes

open access: yesPhysics Letters B, 2018
When axion stars fly through an astrophysical magnetic background, the axion-to-photon conversion may generate a large electromagnetic radiation power. After including the interference effects of the spacially-extended axion-star source and the macroscopic medium effects, we estimate the radiation power when an axion star meets a neutron star.
Yang Bai, Yuta Hamada
openaire   +3 more sources

Detection and parameter estimation of gravitational waves from binary neutron-star mergers in real LIGO data using deep learning

open access: yesPhysics Letters B, 2021
One of the key challenges of real-time detection and parameter estimation of gravitational waves from compact binary mergers is the computational cost of conventional matched-filtering and Bayesian inference approaches.
Plamen G. Krastev   +3 more
doaj   +1 more source

Star Anagram Detection and Classification

open access: yesRecreational Mathematics Magazine
Abstract A star anagram is a rearrangement of the letters of one word to produce another word where no letter retains its original neighbors. These maximally shuffled anagrams are rare, comprising only about 5.7% of anagrams in English.
Jason Parker, Dan Barker
openaire   +2 more sources

3D Multi-Phase Sub-Pixel PSF Estimation Based on Space Debris Detection System

open access: yesPhotonics
The distribution of diffuse spot energy can be used to sensitively evaluate the aberrations and defects of optical systems. Therefore, the objective and quantitative measurement of diffuse spot parameters is an important means to control the detection ...
Fan Bu, Dalei Yao, Yan Wen
doaj   +1 more source

Detecting modified gravity in the stars [PDF]

open access: yesInternational Journal of Modern Physics D, 2014
Modified theories of gravity have received a renewed interest due to their ability to account for the cosmic acceleration. In order to satisfy the solar system tests of gravity, these theories need to include a screening mechanism that hides the modifications on small scales. One popular and well-studied theory is chameleon gravity.
Jeremy Sakstein   +2 more
openaire   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

Accuracy assessment of fusion transcript detection via read-mapping and de novo fusion transcript assembly-based methods

open access: yesGenome Biology, 2019
Background Accurate fusion transcript detection is essential for comprehensive characterization of cancer transcriptomes. Over the last decade, multiple bioinformatic tools have been developed to predict fusions from RNA-seq, based on either read mapping
Brian J. Haas   +5 more
doaj   +1 more source

Infrared Dim Star Background Suppression Method Based on Recursive Moving Target Indication

open access: yesRemote Sensing, 2023
Space-based infrared target detection can provide full-time and full-weather observation of targets, thus it is of significance in space security. However, the presence of stars in the background can severely affect the accuracy and real-time performance
Lei Zhang   +4 more
doaj   +1 more source

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