Results 111 to 120 of about 147,516 (226)
Dark Energy From the Gravitational Wave Background With Scalar Field Dark Matter
Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.ABSTRACT Recent observational results, such as those from pulsar timing arrays (PTA), suggest a low‐frequency Gravitational Wave Background (GWB) permeates our universe. This opens the possibility that gravitational waves could span a broader spectrum, potentially impacting cosmological scales.
Edwin L. Pérez‐Ochoa, Tonatiuh Matos
wiley +1 more source
THE REST-FRAME SUBMILLIMETER SPECTRUM OF HIGH-REDSHIFT, DUSTY, STAR-FORMING GALAXIES [PDF]
, 2014 We present the average rest-frame spectrum of high-redshift dusty, star-forming galaxies from 250 to 770 GHz. This spectrum was constructed by stacking Atacama Large Millimeter/submillimeter Array (ALMA) 3 mm spectra of 22 such sources discovered by the ...
J. Spilker +33 more
semanticscholar +1 more source
Engineering Reports, Volume 7, Issue 3, March 2025.We present the details of implementing a highly efficient and scalable Cosmological N‐body simulation framework on the heterogeneous many‐core supercomputer Sunway TaihuLight. We manage to conduct cosmological simulations which contain up to 1.6 trillion particles, obtaining a sustained performance of 56.3 PFlops with a weak‐scaling parallel efficiency
Zhao Liu +8 more
wiley +1 more source
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
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Searching the Non‐Accreting White Dwarf Population in eROSITA Data
Astronomische Nachrichten, Volume 346, Issue 1, January 2025.ABSTRACT eROSITA is the soft X‐ray instrument aboard the Spectrum Roentgen Gamma (SRG) satellite that is most sensitive in the energy range between 0.2 and 2.3 keV. Between December 2019 and December 2021, eROSITA completed four all‐sky surveys, producing all‐sky X‐ray source lists and sky maps of unprecedented depth.
S. Friedrich +5 more
wiley +1 more source
Integral-Field Spectroscopy of High-Redshift Galaxies: Implications for Early Galaxy Evolution [PDF]
, 2006 Several lines of evidence suggest that the most active phase of galaxy evolution, especially in the most massive systems, was largely completed by $z\sim 1$.
Nesvadba, Nicole
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The AZTEC/SMA interferometric imaging survey of submillimeter-selected high-redshift galaxies [PDF]
, 2009 We present results from a continuing interferometric survey of high-redshift submillimeter galaxies with the Submillimeter Array, including high-resolution (beam size ∼ 2 arcsec) imaging of eight additional AzTEC 1.1mm selected sources in the COSMOS ...
David Hughes, ITZIAR ARETXAGA MENDEZ
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Surveys of High-Redshift Galaxies
, 2013 This chapter details the study of high-redshift galaxies. It first outlines the telescopes used for observing these galaxies: the Hubble Space Telescope (HST) and its follow ups, as well as the next-generation telescopes such as the James Webb Space ...
Steven R. Furlanetto, Abraham Loeb
core +1 more source
The host galaxies of high-redshift quasars [PDF]
, 2020 © 2020 Madeline Anne MarshallIn the early Universe, we observe supermassive black holes with masses of up to a billion times the mass of the Sun, accreting at or even above the Eddington limit.
Marshall, Madeline Anne
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Objective-prism and slit-spectra redshifts in a study of the distribution of galaxies
, 2014 A thorough and detailed investigation into the accuracy, reliability and consistency of the objective-prism redshift technique with changes in plate material, measuring machine and reduction techniques has been undertaken.
Parker, Quentin Andrew
core