Results 91 to 100 of about 512 (214)
The Observational Signatures of Cosmic Strings
, 2009 Cosmic strings were postulated by Kibble in 1976 and, from a theoretical point of view, their existence finds support in modern superstring theories, both in compactification models and in theories with extended additional dimensions.
Riccio, Giuseppe
core
Journal of the American Ceramic Society, Volume 108, Issue 12, December 2025.Development of cordierite lattice structures from DIW of silicone‐based emulsions, in multiple forms (aqueous phase as suspension of oxide nanoparticles, as solution of Mg and Al salts, or as solution/suspension). Abstract The development of advanced ceramic materials with tailored microstructures is essential for meeting the demands of many high ...
Valeria Diamanti +3 more
wiley +1 more source
The Astrophysical Journal LettersWe investigate large-scale gas kinematics in the multiphase circumgalactic medium (CGM) using the observed correlation between line width (Doppler b parameter) and column density ( N ) for H i and O vi absorbers. Leveraging extensive public galaxy survey
Zhijie Qu +4 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 +1 more
core
Discovery of Merging Twin Quasars at z = 6.05
The Astrophysical Journal LettersWe report the discovery of two quasars at a redshift of z = 6.05 in the process of merging. They were serendipitously discovered from the deep multiband imaging data collected by the Hyper Suprime-Cam (HSC) Subaru Strategic Program survey.
Yoshiki Matsuoka +16 more
doaj +1 more source
[O III] profile substructure in radio-quiet quasars
, 2006 Interactions between the radio jet and the optical emission of the narrow-line region (NLR) are a well known phenomenon in Seyfert galaxies. Here, we present the study of possible jet-NLR interactions in five radio-quiet PG quasars with double or triple ...
Leipski, C. +3 more
core +1 more source
Identification Of Outflows And Candidate Dual Active Galactic Nuclei In SDSS Quasars At Z=0.8-1.6 [PDF]
, 2013 We present a sample of 131 quasars from the Sloan Digital Sky Survey at redshifts 0.8 < z < 1.6 with double peaks in either of the high-ionization narrow emission lines [Ne V]lambda 3426 or [Ne III]lambda 3869.
Kennefick, Daniel +5 more
core +1 more source
JWST Confirms the Nature of CID-42
The Astrophysical JournalThe galaxy CID-42 (CXOC J100043.1+020637.2) at z = 0.359 has been proposed to contain a promising candidate for a gravitational-wave recoiling supermassive black hole (SMBH), a slingshot SMBH from a triple-SMBH interaction, or a kiloparsec-scale dual ...
Junyao Li, Ming-Yang Zhuang, Yue Shen
doaj +1 more source
UniverseHigh-redshift active galactic nuclei (AGN) provide key insights into early supermassive black hole growth and cosmic evolution. This study investigates the parsec-scale properties of 86 radio-loud quasars at z ≥ 3 using very long baseline interferometry (
Shaoguang Guo +7 more
doaj +1 more source
Time delays for eleven gravitationally lensed quasars revisited [PDF]
, 2011 peer reviewedAims. We test the robustness of published time delays for 11 lensed quasars by using two techniques to measure time shifts in their light curves. Methods.
Magain, Pierre +3 more
core +1 more source