Results 41 to 50 of about 18,849 (212)

A Survey for Large Separation Lensed FIRST Quasars

, 2001
Little is known about the statistics of gravitationally lensed quasars at large (7''-30'') image separations, which probe masses on the scale of galaxy clusters.
Andernach, Bahcall, Bartelmann, Becker, Becker, Borgeest, Bullock, Caretta, Carlberg, Cen, Chiba, Ciliegi, Dan Maoz, Dyer, Dyer, Ehlers, Eran O. Ofek, Falco, Flores, Francisco Prada, Girardi, Giveon, Gregg, Hans-Walter Rix, Helfand, Helfand, Helfand, Helfand, Hopkins, Keeton, King, Kochanek, Kochanek, Kochanek, Lehar, Malhotra, Maoz, Maoz, Maoz, Maoz, Maoz, Maoz, McMahon, Monet, Mortlock, Myers, Narayan, Navarro, Navarro, Navarro, Navarro, Nonino, Perlmutter, Phillips, Phillips, Postman, Press, Refsdal, Riess, Schlegel, Shanks, Tsafrir Kolatt, Turner, Wambsganss, White, White   +65 more
core   +2 more sources

Structure, spectra and variability of some GPS radio sources

, 2010
We report the results of multifrequency-VLBI observations of GHz-Peaked-Spectrum (GPS) radio sources. The VLBI structure and component spectra of some GPS sources are presented.
Becker, de Vries, de Vries, Fanti, Gregory, Griffith, Labiano, Liu, Murgia, O'Dea, O'Dea, Owsianik, Snellen, Snellen, Stanghellini, Stanghellini, Tinti, Torniainen, Xiang, Xiang   +19 more
core   +1 more source

Astroinformatics of galaxies and quasars: a new general method for photometric redshifts estimation [PDF]

, 2011
With the availability of the huge amounts of data produced by current and future large multi-band photometric surveys, photometric redshifts have become a crucial tool for extragalactic astronomy and cosmology.
D'Abrusco, Raffaele, Laurino, Omar, Longo, Giuseppe, Riccio, Giuseppe   +3 more
core   +2 more sources

Ionized Gas Outflows from the MAGNUM Survey: NGC 1365 and NGC 4945

Frontiers in Astronomy and Space Sciences, 2017
AGN feedback, acting through strong outflows accelerated in the nuclear region of AGN hosts, is invoked as a key ingredient for galaxy evolution by many models to explain the observed BH-galaxy scaling relations.
Giacomo Venturi, Giacomo Venturi, Alessandro Marconi, Alessandro Marconi, Matilde Mingozzi, Matilde Mingozzi, Stefano Carniani, Stefano Carniani, Giovanni Cresci, Guido Risaliti, Guido Risaliti, Filippo Mannucci   +11 more
doaj   +1 more source

Minimalist Footwear Acutely Alters Running Kinematics in Runners With Medial Tibial Stress Syndrome

Arthroscopy, Sports Medicine, and Rehabilitation, EarlyView.
Purpose To assess immediate biomechanical changes in runners with medial tibial stress syndrome (MTSS) when transitioning from standard to minimalist running shoes. Methods Active runners diagnosed with MTSS ran on a treadmill at 10 km/h using standard and minimalist running shoes. Hip, knee, and ankle joint kinematics were captured using a 16‐infrared‐
Quyet Thang Nguyen, My T. Than, Minh Ho Ngoc, Ngoc‐Tram Nguyen, Nam Vu Tu, Tien Quang Tran, Dung Tran Trung   +6 more
wiley   +1 more source

Hidden No More: Spotlight on Tidal Disruption Events in Active Galactic Nuclei

Astronomische Nachrichten, EarlyView.
ABSTRACT Tidal disruption events (TDEs) are typically discovered in previously quiescent galaxies. However, earlier studies have revealed a handful of TDEs occurring in pre‐existing active galactic nuclei (AGN). We discuss AT2019aalc, a promising TDE candidate in an AGN, and compare it to similar sources.
Patrik Milán Veres
wiley   +1 more source

Outflow and hot dust emission in high redshift quasars

, 2013
Correlations of hot dust emission with outflow properties are investigated, based on a large z~2 non-broad absorption lines quasar sample built from the Wide-field Infrared Survey and the Sloan Digital Sky Survey data releases.
Wang, Huiyuan, Wang, Tinggui, Xing, Feijun, Zhang, Kai, Zhang, Shaohua, Zhou, Hongyan   +5 more
core   +1 more source

Dimensional association between ADHD traits and gray matter volume in young adults: A voxel‐based morphometry study

Psychiatry and Clinical Neurosciences Reports, Volume 5, Issue 2, June 2026.
This study examined the association between attention‐deficit/hyperactivity disorder (ADHD) traits and gray matter volume (GMV) in 534 healthy young adults. Higher Hyperactivity/Restlessness scores were associated with greater GMV in the right dorsolateral prefrontal cortex (DLPFC), a region implicated in executive control and behavioral regulation. No
Haruka Asaoka, Michio Takahashi, Kentaro Oba, Hikaru Takeuchi, Yasuyuki Taki   +4 more
wiley   +1 more source

A Quasar Pair Sample Compiled from DESI Data Release 1

The Astrophysical Journal
Interacting quasar pairs (QPs; either dual or binary) provide crucial insights into galaxy mergers, black hole growth, and large-scale structure formation.
Liang Jing, Qihang Chen, Xingyu Zhu, Zhuojun Deng, Hu Zou, Jun-Qing Xia, Jianghua Wu   +6 more
doaj   +1 more source

Obscured Binary Quasar Cores in SDSS J104807.74+005543.5?

, 2004
We report the discovery of a possible close binary system of quasars in SDSS J1048+0055. The [OIII]4959,5007 emission lines are clearly double-peaked, and two discrete radio sources with a projected physical separation of ~20 pc are found in the VLBA ...
Dong, Xiaobo, Li, Cheng, Wang, Tinggui, Zhang, Xueguang, Zhou, Hongyan   +4 more
core   +2 more sources