Results 61 to 70 of about 2,565,021 (373)
Disentangling Time-series Spectra with Gaussian Processes: Applications to Radial Velocity Analysis [PDF]
, 2017 Measurements of radial velocity variations from the spectroscopic monitoring of stars and their companions are essential for a broad swath of astrophysics; these measurements provide access to the fundamental physical properties that dictate all phases ...
I. Czekala +6 more
semanticscholar +1 more source
European Physical Journal C: Particles and Fields, 2019 The significance of the radial velocity effects on the leading-order gravitational frequency shift in some special cases was reported recently. This paper investigates the gravitational shift of frequency of light propagating in the equatorial plane of a
Guansheng He, Chaohong Pan, Wenbin Lin
doaj +1 more source
Propagation velocities of gas rings in collisional ring galaxies [PDF]
, 2003 The propagation velocity of the first gas ring in collisional ring galaxies, i.e. the velocity at which the maximum in the radial gas density profile propagates radially in the galactic disk, is usually inferred from the radial expansion velocity of gas ...
Amram +35 more
core +2 more sources
The Joker: A Custom Monte Carlo Sampler for Binary-star and Exoplanet Radial Velocity Data [PDF]
, 2016 Given sparse or low-quality radial velocity measurements of a star, there are often many qualitatively different stellar or exoplanet companion orbit models that are consistent with the data.
A. Price-Whelan +3 more
semanticscholar +1 more source
CEPHEID PULSATIONS FROM RADIAL VELOCITY MEASUREMENTS
Odessa Astronomical Publications, 2017 We discuss the results of our many-year program of Cepheid radial velocities concerning the Hertzsprung sequence in radial-velocity curves, double-mode Cepheids, the period-radius relation, binary Cepheids.
N. A. Gorynya, N. N. Samus
doaj +1 more source
Effect of Radial Porosity Oscillation on the Thermal Performance of Packed Bed Latent Heat Storage
Engineering, 2021 Owing to its high heat storage capacity and fast heat transfer rate, packed bed latent heat storage (LHS) is considered as a promising method to store thermal energy.
H.B. Liu, C.Y. Zhao
doaj +1 more source
Radial-velocity fitting challenge - II. First results of the analysis of the data set [PDF]
, 2016 This document is the Accepted Manuscript of the following article: X. Dumusque, et al, 'Radial-velocity fitting challenge II. First results of the analysis of the data set', Astronomy & Astrophysics, Vol.
X. Dumusque +27 more
semanticscholar +1 more source
The Death of Vulcan: NEID Reveals That the Planet Candidate Orbiting HD 26965 Is Stellar Activity
The Astronomical JournalWe revisit the long-studied radial velocity (RV) target HD 26965 using recent observations from the NASA-NSF “NEID” precision Doppler facility. Leveraging a suite of classical activity indicators, combined with line-by-line RV analyses, we demonstrate ...
Abigail Burrows +19 more
doaj +1 more source
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
Sensors, 2015 The magnetohydrodynamics angular rate sensor (MHD ARS) has received much attention for its ultra-low noise in ultra-broad bandwidth and its impact resistance in harsh environments; however, its poor performance at low frequency hinders its work in long ...
Yue Ji +3 more
doaj +1 more source