Results 141 to 150 of about 3,423,233 (292)
UV-to-optical insights into the black hole star model in little red dots
Astronomy & AstrophysicsLittle red dots (LRDs) are a heterogeneous class of objects, and several scenarios have been proposed for their physical nature and evolution. While these theories have been tested on individual LRDs using limited spectral features, a systematic Bayesian
Mérida Rosa M. +4 more
doaj +1 more source
X-ray luminous clusters of galaxies at z > 0.3 [PDF]
, 2003 This thesis presents optical CCD imaging taken as part of the follow-up programme to the Massive Cluster Survey, a ROSAT All-Sky Survey based cluster survey aiming to discover X-ray luminous galaxy clusters at redshifts above 0.3.
Courtney, Nathan James Daniel
core
Simulations All the Way Up! An Atheist's Response to the Fine‐Tuning Argument
Analytic Philosophy, EarlyView.ABSTRACT So the Fine‐tuning Argument goes, because it is so unlikely for the physical constants of the laws of nature to have taken the values that they in fact take, we should significantly raise our credence that God exists. Simulation Arguments argue that our world might be (or, in stronger versions, that it probably is) a mere computer simulation ...
Nikk Effingham
wiley +1 more source
Galactic bars and active galactic nucleus fuelling in the second half of cosmic history
Astronomy & AstrophysicsWe investigate the role of galactic bars in fuelling and triggering active galactic nuclei (AGN) in disc galaxies up to z ∼ 0.8. We utilised a deep learning model, fine-tuned on Galaxy Zoo volunteer classifications, to identify (strongly and weakly ...
La Marca A. +5 more
doaj +1 more source
Molecular hydrogen in galaxies [PDF]
, 1987 This study aims to understand the key role played by molecular hydrogen in the evolution of galaxies, with a view to constraining its radial distribution in the Galaxy and the CO→H(_2) conversion factor α(_20).The star formation rate is shown to be ...
Wilkinson, David Adam, Wilkinson, D.A
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On Our Cosmic (In)significance
Ratio, EarlyView.ABSTRACT This article discusses three interpretations of cosmic significance, all of which reveal something important about the notion of significance. Along the way, it proposes a unified view of significance by combining elements of each of the views.
Oskari Sivula
wiley +1 more source
Constraints on the early growth of massive black holes from the PTA and JWST with L-GalaxiesBH
Astronomy & AstrophysicsRecent pulsar timing array (PTA) results provide strong evidence of a stochastic gravitational wave background (sGWB), consistent with a population of merging massive black holes (MBHs) at z < 1.
Bonoli Silvia +6 more
doaj +1 more source
An infrared study of a sample of optically selected galaxies [PDF]
, 1987 Infrared and optical photometry of a complete sub-sample of 194 galaxies in the Anglo-Australian Redshift Survey is presented. The Colour-Redshift diagrams are constructed and used, in a self-consistent manner, to reduce the data to zero-redshift colours
Mobasher, B, Mobasher, Bahram
core
Oral Science International, Volume 24, Issue 1, January 2027.ABSTRACT Aim Tongue movement is essential for oral functions, including mastication, swallowing, and speech articulation; however, objective methods for evaluating lateral tongue movement remain limited. This study aimed to develop an ultrasonography‐based method for quantitatively assessing lateral tongue movement in healthy adults and school‐aged ...
Daiki Okada +6 more
wiley +1 more source
An automated activity classification tool for optical galaxy spectra
Astronomy & AstrophysicsContext. Reliable and versatile galaxy activity diagnostic tools are indispensable for comprehending the physical processes that drive galaxy evolution.
Daoutis C. +4 more
doaj +1 more source