Results 71 to 80 of about 85,937 (304)
Systematic Analysis of 22 Microlensing Parallax Candidates [PDF]
, 2005 We attempt to identify all microlensing parallax events for which the parallax fit improves \Delta\chi^2 > 100 relative to a standard microlensing model. We outline a procedure to identify three types of discrete degeneracies (including a new one that we
Andrew Gould +9 more
core +2 more sources
New Arabic Records From Cairo on Supernovae 1181 and 1006
Astronomische Nachrichten, EarlyView.ABSTRACT The remnant of the historical supernova SN 1181 is under discussion: While the previously suggested G130.7+3.1 (3C58) appears too old (3000–5000 year), the unusual star IRAS00500+6713 with a surrounding nebula (Pa‐30) has an expansion age not inconsistent with a SN Iax explosion in ad 1181 under the assumption that neither acceleration nor ...
J. G. Fischer +3 more
wiley +1 more source
Impact of basic angle variations on the parallax zero point for a scanning astrometric satellite [PDF]
, 2017 Determination of absolute parallaxes by means of a scanning astrometric satellite such as Hipparcos or Gaia relies on the short-term stability of the so-called basic angle between the two viewing directions. Uncalibrated variations of the basic angle may
Butkevich, Alexey G. +4 more
core +1 more source
Verification of the accommodative responses in viewing an on-axis analog reflection hologram
Open Physics, 2021 Vergence and accommodation responses of human vision are very important factors when a 3D image is observed, and a vergence-accommodation conflict (VAC) causes perceptual distortion, visual discomfort, and fatigue for an observer.
Lee Seunghyun +4 more
doaj +1 more source
Motion parallax for 360° RGBD video
IEEE Transactions on Visualization and Computer Graphics, 2019 We present a method for adding parallax and real-time playback of 360° videos in Virtual Reality headsets. In current video players, the playback does not respond to translational head movement, which reduces the feeling of immersion, and causes motion ...
A. Serrano +6 more
semanticscholar +1 more source
Itinerant curriculum theory: People's theory against the field's epistemicidal ethos
The Curriculum Journal, EarlyView.Abstract The field of curriculum studies suffers from a glaring theoretical impasse. Much of this impasse has been rightly attributed to the triumphalism of the neoliberal wave that has massacred the educational hemisphere with policies and practices that reduce pedagogy to an instrumentalist praxis directly associated with the thirsty desires and ...
João M. Paraskeva
wiley +1 more source
Minimization of Parallax Artifacts in Video Stitching for Moving Foregrounds
IEEE Access, 2018 Parallax handling in the presence of moving foregrounds is a challenging problem in video stitching. The artifacts such as blurring or ghosting become prominent when objects move across multiple views. In this paper, we propose a novel scheme to minimize
Muhammad Umer Kakli +2 more
doaj +1 more source
Hubble Space Telescope Trigonometric Parallax of Polaris B, Companion of the Nearest Cepheid [PDF]
, 2017 Polaris, the nearest and brightest Cepheid, is a potential anchor point for the Leavitt period–luminosity relation. However, its distance is a matter of contention, with recent advocacy for a parallax of ∼10 mas, in contrast with the Hipparcos ...
H. Bond +4 more
semanticscholar +1 more source
New light on the Gaia DR2 parallax zero-point: influence of the asteroseismic approach, in and beyond the Kepler field [PDF]
Astronomy & Astrophysics, 2019 The importance of studying the Gaia DR2 parallax zero-point by external means was underlined by the articles that accompanied the release, and initiated by several works making use of Cepheids, eclipsing binaries, and asteroseismology.
Saniya Khan +17 more
semanticscholar +1 more source
Compact Spectral Imaging: A Review of Miniaturized and Integrated Systems
Laser &Photonics Reviews, EarlyView.This review explores the rapid shift toward compact spectral imaging systems by examining four key design paradigms: Do‐It‐Yourself (DIY) platforms, freeform optics, filter‐on‐chip integration, and multifunctional metasurfaces. The discussion highlights critical applications in medicine, agriculture, and environmental monitoring, providing comparative ...
Sani Mukhtar, Amir Arbabi, Jaime Viegas
wiley +1 more source