Results 51 to 60 of about 1,686 (186)
Symposium - International Astronomical Union, 1994 I review recent results for quasars and discuss how they are related to activity in galaxies. Topics included are studies of quasar host galaxies with HST; searches for quasars in the Hubble Deep Field; evolution of the quasar luminosity function; news highlights from astro-ph; and current observational research problems and their relation to ...
openaire +2 more sources
Minimalist Footwear Acutely Alters Running Kinematics in Runners With Medial Tibial Stress Syndrome
Arthroscopy, Sports Medicine, and Rehabilitation, Volume 8, Issue 3, June 2026.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 +6 more
wiley +1 more source
The Jets in Micro-Quasars and Quasars: A Comparison [PDF]
Highlights of Astronomy, 2005 AbstractThe discovery of relativistic jets in radio emitting X-ray binaries in our own galaxy has led to the term ‘microquasar’ being coined for these objects. In this paper the properties of microquasars are compared with those of quasars and radio galaxies, with the aim of trying to see how the similarities and differences can inform us about the ...
openaire +1 more source
AllBRICQS: The Discovery of Luminous Quasars in the Northern Hemisphere
The Astrophysical Journal Supplement SeriesWe present the second catalog of bright quasars from the All-sky BRIght, Complete Quasar Survey (AllBRICQS), focusing on spectroscopically observed quasars in the Northern Hemisphere with Galactic latitude ∣ b ∣ > 10°.
Yunyi Choi +18 more
doaj +1 more source
Hidden No More: Spotlight on Tidal Disruption Events in Active Galactic Nuclei
Astronomische Nachrichten, Volume 347, Issue 5, June 2026.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
A Deep Chandra X-Ray Survey of a Luminous Quasar Sample at z ∼ 7
The Astrophysical JournalWe present new Chandra observations of seven luminous quasars at z > 6.5. Combined with archival Chandra observations of all other known quasars, they form nearly complete X-ray observations of all currently known z ∼ 7 quasars with M _1450 < –26.5 ...
Xiangyu Jin +13 more
doaj +1 more source
Highly Accreting Quasars at High Redshift
Frontiers in Astronomy and Space Sciences, 2018 We present preliminary results of a spectroscopic analysis for a sample of type 1 highly accreting quasars (L/LEdd ~ 1.0) at high redshift, z ~2–3.
Mary L. Martínez-Aldama +7 more
doaj +1 more source
Journal of Medical Virology, Volume 98, Issue 6, June 2026.ABSTRACT Vaginal self‐sampling is increasingly integrated into cervical cancer screening programs, requiring evidence of accurate HPV testing on self‐collected samples. This study evaluated the clinical accuracy of Allplex HPV HR Detection (Allplex) within VALHUDES, a framework established to assess the clinical performance of HPV assays on self ...
Ardashel Latsuzbaia +9 more
wiley +1 more source
On Quasar Masses and Quasar Host Galaxies [PDF]
The Astrophysical Journal, 1998 Accepted for publication in ApJ Letters, 7 pages, aas2pp4 ...
openaire +2 more sources
Quasars Probing Quasars. II. The Anisotropic Clustering of Optically Thick Absorbers around Quasars [PDF]
The Astrophysical Journal, 2007 With close pairs of quasars at different redshifts, a background quasar sightline can be used to study a foreground quasar's environment in absorption. We used a sample of 17 Lyman limit systems with column density N_HI > 10^19 cm^-2 selected from 149 projected quasar pair sightlines, to investigate the clustering pattern of optically thick ...
Hennawi, Joseph F., Prochaska, Jason X.
openaire +2 more sources