Results 231 to 240 of about 1,324 (259)

Strong gravitational lenses from the Vera C. Rubin Observatory. [PDF]

Philos Trans A Math Phys Eng Sci
Shajib AJ, Smith GP, Birrer S, Verma A, Arendse N, Collett T, Daylan T, Serjeant S, LSST Strong Lensing Science Collaboration.   +8 more
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Massless and massive scalar shell dynamics from rotating BTZ black holes with nonminimally coupled scalar fields. [PDF]

Sci Rep
Javed F, Waseem A, Mustafa G, Maurya SK, Shrahili M, Atamurotov F, Ashebo MA.   +6 more
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Galaxy Tomography with the Gravitational Wave Background from Supermassive Black Hole Binaries

Chen Y.
europepmc   +1 more source

Extended hot dust emission around the earliest massive quiescent galaxy

Ji Z, Williams C, Rieke G, Lyu J, Alberts S, Sun F, Helton J, Rieke M, Shivaei I, D'Eugenio F, Tacchella S, Robertson B, Zhu Y, Maiolino R, Bunker A, Sun Y, Willmer C.   +16 more
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Stellar-Mass Black Holes

2014
This chapter examines stellar-mass black holes. The empirical study of black holes began in the 1960s with the discovery of quasars and the advent of X-ray astronomy. X-ray detectors could detect X-rays coming from a particular direction—as the instrument rotated, the detector scanned the sky.
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Stellar mass black hole optimisation for utility mining

International Journal of Data Analysis Techniques and Strategies, 2019
Major challenges in mining high utility itemsets from the transaction databases requires exponential search space and database-dependent minimum utility threshold. The search space is very large because of the large number of distinct items and size of the database.
Kannimuthu Subramanian, Kandhasamy Premalatha   +1 more
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Mass Measurement of Stellar Black Holes

Theoretical and Natural Science
Black holes, as the most mysterious celestial bodies in the universe, have received limited research from humans. This article reviews the history of observing black holes and present the dynamical method for measuring their mass. Drawing on reported dynamical estimates, I built a dataset of stellar-mass black holes and obtained an average mass of 8 ...
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Stellar Mass Black Hole for Engineering Optimization

2017
In recent years, nature-inspired algorithms have been popular due to the fact that many real-world optimization problems are increasingly large, complex and dynamic. By reasons of the size and complexity of the problems, it is necessary to develop an optimization method whose efficiency is measured by finding the near optimal solution within a ...
Premalatha Kandhasamy, Balamurugan R, Kannimuthu S   +2 more
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Observational evidence for stellar mass black holes

Journal of Astrophysics and Astronomy, 1999
I review the evidence for stellar mass black holes in the Galaxy. The unique properties of the soft X-ray transient (SXTs) have provided the first opportunity for detailed studies of the mass-losing star in low-mass X-ray binaries. The large mass functions of these systems imply that the compact object has a mass greater than the maximum mass of a ...
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Masses of black holes in binary stellar systems

Uspekhi Fizicheskih Nauk, 1996
Mass determination methods and their results for ten black holes in X-ray binary systems are summarised. A unified interpretation of the radial velocity and optical light curves allows one to reliably justify the close binary system model and to prove the correctness of determination of the optical star mass function fv(m).The orbit plane inclination i
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