Results 21 to 30 of about 87,875 (159)

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

Reproductive Biology and Endocrinology, 2020
An amendment to this paper has been published and can be accessed via the original article.
David B. Seifer, Burcin Simsek, Ethan Wantman, Alexander M. Kotlyar   +3 more
doaj   +1 more source

Clustering and redshift-space distortions in QSO and galaxy surveys [PDF]

, 2006
In this thesis, we exploit the potential of existing QSO and galaxy surveys for investigating the nature of the large scale structure in the Universe. A detailed analysis of clustering and redshift- space distortions allows us to constrain cosmological ...
Cruz da Angela, José Antonio, José Antonio Cruz da Angela   +1 more
core  

Studying Cosmic Evolution with the XMM-Newton Distant Cluster Project [PDF]

, 2007
Investigating X-ray luminous galaxy clusters at high redshift (z>~1) provides a challenging but fundamental constraint on evolutionary studies of the largest virialized structures in the Universe, the baryonic matter component in form of the hot ...
Fassbender, Rene
core   +1 more source

The Origin of Low-redshift Event Rate Excess as Revealed by the Low-luminosity Gamma-Ray Bursts

The Astrophysical Journal, 2023
The relation between the event rate of long gamma-ray bursts and the star formation rate is still controversial, especially at the low-redshift end. Dong et al.
X. F. Dong, Z. B. Zhang, Q. M. Li, Y. F. Huang, K. Bian   +4 more
doaj   +1 more source

The luminosity function of Lyα emitters at 2.3 < z < 4.6 from integral-field spectroscopy [PDF]

, 2005
We have used Visible MultiObject Spectrograph Integral-Field Unit observations centred on a radio galaxy at z= 2.9 to search for Lyα emitters within a comoving volume of ∼104 Mpc3 .
Venemans, BP, van Breukelen, C, Jarvis, MJ, Venemans, B.P., Jarvis, M.J., Van Breukelen, C., Jarvis, Matthew   +6 more
core   +1 more source

Hot cores: probes of high-redshift galaxies? [PDF]

, 2005
The very high rates of second generation star formation detected and inferred in high-redshift objects should be accompanied by intense millimetre-wave emission from hot core molecules.
Ferreras, I., Viti, S, Lintott, C.J., Viti, S., Lintott, CJ, Williams, D.A., Rawlings, JMC, Williams, DA, Rawlings, J.M.C., Ferreras, I   +9 more
core   +1 more source

Peering into the Cosmic Dawn: JWST Cycle 1 Data Reveals Early Galaxy Candidates at Redshifts z > 9.5

Edinburgh Student Journal of Science
Observing high-redshift objects provides a window into the past, enabling insight into galaxy formation, matter distribution, and the nature of dark matter and energy.
Sev Zielinska
doaj   +1 more source

Galaxy clustering and dynamics from redshift surveys [PDF]

, 1990
The clustering and dynamical properties of the 368 galaxies in the redshift surveys of Metcalfe et al. (1989) and Parker et al. (1986) are investigated. These galaxies were selected from ten high galactic latitude fields complete to a magnitude limit of ...
Hale-Sutton, D, Hale-Sutton, Duncan
core  

On the Observation of Distant Objects in General Relativity and Its Implications in Cosmology

Universe
We carry out a careful analysis of the notion of observation of distant events in a curved Universe. This leads us to hypothesise that all measurements of our physical environment are performed with respect to a representation referential that obeys the ...
Théophile Caby
doaj   +1 more source

Redshift and Photon Energy Attenuation Constant in Vacuum

Доклады Белорусского государственного университета информатики и радиоэлектроники
There obtained an estimate of the minimum value of the photon energy attenuation constant in vacuum α: α = 8 · 10–19 m–1 based on quantum concepts of the structure of vacuum and data on the red shift of the emitter spectra of distant galaxies. Presumably,
A. A. Kurayev, V. V. Matveyenka
doaj   +1 more source