Results 11 to 20 of about 87,875 (159)

First results from high redshift quasar searches in VIKING [PDF]

, 2012
This thesis presents the discovery of the first luminous z & 6.5 quasars in the VISTA kilo-degree Infrared Galaxy Survey (VIKING). After some basic quality control, quasar selection is investigated via use of initial data supplementedwith ...
Findlay, Joseph
core   +4 more sources

Redshift distribution of gamma-ray bursts and star formation rate [PDF]

, 2006
Aims. The redshift distribution of gamma-ray bursts collected in the BATSE Catalog is compared with the star formation rate.We aim to clarify the accordance between them. We also study the case of comoving number density of bursts monotonously increasing
Bagoly, Zsolt, I. Horváth, Mészáros, A., Horvath, I., Balázs L G, Balázs, L., Bagoly, Z., L. G. Balázs, Horváth I, Balázs, L. G., Balázs, L G, Bagoly Z, Z. Bagoly, Mészáros A, Horváth, I, Balázs, Lajos György, Mészáros, A, Bagoly, Z, Horváth, István, A. Mészáros   +19 more
core   +1 more source

Galaxy and mass assembly (GAMA) : AUTOZ spectral redshift measurements, confidence and errors [PDF]

, 2014
The Galaxy And Mass Assembly (GAMA) survey has obtained spectra of over 230 000 targets using the Anglo-Australian Telescope. To homogenize the redshift measurements and improve the reliability, a fully automatic redshift code was developed (AUTOZ).
Gunawardhana, M. L. P., Driver, S. P., M E Cluver (16161572), M Alpaslan (16114469), A M Hopkins (16143587), B W Holwerda (16219943), Jonathan Loveday (4460899), Driver, S.P., Á R López-Sánchez (16219868), Holwerda, Benne W., López-Sánchez, A.R., Baldry, I. K., Alpaslan, M., J Bland-Hawthorn (16111139), Bauer, A. E., Davies, L. J. M., E N Taylor (16143620), Baldry, I.K., A S G Robotham (16143614), A E Bauer (16161566), Hopkins, A. M., Brough, S., Loveday, J., I K Baldry (16072595), M L P Gunawardhana (16161569), Croom, S. M., Liske, J., P Norberg (16143575), Holwerda, B.W., L S Kelvin (16143602), S M Croom (16143596), Taylor, E.N., Robotham, A. S. G., Bauer, A.E., Bland-Hawthorn, J., Robotham, A.S.G., J Peacock (9865184), Gunawardhana, M.L.P., Peacock, J. A., Hopkins, A.M., Taylor, E. N., Lopez-Sanchez, A. R., S Brough (16143590), L J M Davies (16219937), Kelvin, L.S., Norberg, P., J Liske (7814738), Croom, S.M., Kelvin, L. S., Davies, L.J.M., Peacock, J., Cluver, M.E., Cluver, M. E., S P Driver (16143581)   +53 more
core   +1 more source

Variable G versus the Accelerated Expansion of the Universe

Open Astronomy, 2017
It is shown that the hypothesis of permitting variability of the Newtonian constant G, increasing with the local density of dark matter, implies that there is no need for the introduction of a cosmological constant or accelerated expansion of the ...
Colenbrander Bernard G., Hulscher Willem S.   +1 more
doaj   +1 more source

Hydrogen Intramolecular Stretch Redshift in the Electrostatic Environment of Type II Clathrate Hydrates from Schrödinger Equation Treatment

Applied Sciences, 2020
The one-dimensional Schrödinger equation, applied to the H2 intramolecular stretch coordinate in singly to quadruply occupied large cages in extended Type II (sII) hydrogen clathrate hydrate, was solved numerically herein via potential-energy scans from ...
Christian J. Burnham, Zdenek Futera, Zlatko Bacic, Niall J. English   +3 more
doaj   +1 more source

Leveraging Machine Learning for Photometric Redshift Estimation of JWST Galaxies

Edinburgh Student Journal of Science
With the launch of JWST, the volume and complexity of astronomical data are increasing, a trend that will continue with future instruments such as SKA and Euclid. It is inevitable that data-driven methods will become more prominent alongside model-driven
Julie Kalná, Ryan Begley, Callum Donnan
doaj   +1 more source

О красном смещении спектров галактик [PDF]

Философия и космология, 2015
It is observed the spherical model of the Metagalaxy (Metagalaxy here is the observed part of the Universe) with the observer in the center of the sphere.
Избрехт А. Р.
doaj  

Status of racial disparities between black and white women undergoing assisted reproductive technology in the US

Reproductive Biology and Endocrinology, 2020
Background Numerous studies have demonstrated substantial differences in assisted reproductive technology outcomes between black non-Hispanic and white non-Hispanic women. We sought to determine if disparities in assisted reproductive technology outcomes
D. B. Seifer, B. Simsek, E. Wantman, A. M. Kotlyar   +3 more
doaj   +1 more source

Fast Radio Burst Energy Function in the Presence of DM_host Variation

Universe
Fast radio bursts (FRBs) have been found in great numbers, but the physical mechanism of these sources is still a mystery. The redshift evolutions of the FRB energy distribution function and the volumetric rate shed light on the origin of FRBs.
Ji-Guo Zhang, Yichao Li, Jia-Ming Zou, Ze-Wei Zhao, Jing-Fei Zhang, Xin Zhang   +5 more
doaj   +1 more source

Fen Bilgisi Öğretmen Adaylarının E. Hubble’ın “Kırmızıya Kayma Yasası” Çerçevesinde Bilgi ve Bilişsel Süreç Yeterliklerinin İncelenmesi

Sakarya University Journal of Education, 2018
Bu çalışmanın amacı, Hubble’ın “Kırmızıya KaymaYasası” çerçevesinde test oluşturularak fen bilgisi öğretmen adaylarının bilgive bilişsel süreç yeterliklerinin incelenmesidir. Araştırmada nitel durumçalışması deseni kullanılmıştır.
Nilgün Aydın, Abdullah Aydın
doaj   +1 more source