Results 21 to 30 of about 1,819,617 (345)
Asymmetry in Microlensing-Induced Light Curves [PDF]
, 1999 We discuss distortion in microlensing-induced light curves which are considered to be curves due to single-point-mass lenses at a first glance. As factors of the distortion, we consider close binary and planetary systems, which are the limiting cases of ...
Kojima, Yasufumi, Konno, Kohkichi
core +3 more sources
Light Curves of Rapidly Rotating Neutron Stars [PDF]
, 2000 We consider the effect of rapid rotation on the light curves of neutron stars with hot polar caps. For $P \approx 3$ms spin periods, the pulse fractions can be as much as an order of magnitude larger than with simple slowly-rotating (Schwarzschild ...
Kevin P. Rauch +7 more
core +2 more sources
Blazar Variability: A Study of Non-stationarity and the Flux-RMS Relation
, 2020 We analyze X-ray light curves of the blazars Mrk 421, PKS 2155-304, and 3C 273 using observations by the Soft X-ray Telescope on board AstroSat and archival XMM-Newton data.
Bhattacharyya, Souradip +3 more
core +1 more source
A New Statistical Approach to the Optical Spectral Variability in Blazars
Galaxies, 2016 We present a spectral variability study of a sample of about 25 bright blazars, based on optical spectroscopy. Observations cover the period from the end of 2008 to mid 2015, with an approximately monthly cadence.
Jose A. Acosta-Pulido +3 more
doaj +1 more source
Predicting Variable Star Light Curves [PDF]
International Astronomical Union Colloquium, 1993 AbstractI present a new method to test determinism, in particular the nonlinear behavior, in observed time series of pulsating stars, based on a recent prediction method which exploits the dynamical system theory. A method for filling gaps in data has thereby been constructed.
openaire +1 more source
Light on curved backgrounds [PDF]
Physical Review D, 2015 34 pages, 10 ...
Batic, D., Nelson, S., Nowakowski, M.
openaire +2 more sources
Near-infrared light curves of type Ia supernovae [PDF]
, 2012 Aims. With our time-dependent model atmosphere code PHOENIX, our goal is to simulate light curves and spectra of hydrodynamical models of all types of supernovae. In this work, we simulate near-infrared light curves of SNe Ia and confirm the cause of the
Baron +19 more
core +1 more source
RobPer: An R Package to Calculate Periodograms for Light Curves Based on Robust Regression
Journal of Statistical Software, 2016 An important task in astroparticle physics is the detection of periodicities in irregularly sampled time series, called light curves. The classic Fourier periodogram cannot deal with irregular sampling and with the measurement accuracies that are ...
Anita M. Thieler +2 more
doaj +1 more source
Modeling The Time Variability of Accreting Compact Sources [PDF]
, 1999 We present model light curves for accreting Black Hole Candidates (BHC) based on a recently proposed model for their spectro-temporal properties. According to this model, the observed light curves and aperiodic variability of BHC are due to a series of ...
Abramowicz M. A. +5 more
core +2 more sources
Photoelectic BV Light Curves of Algol and the Interpretations of the Light Curves [PDF]
Journal of Astronomy and Space Sciences, 1985 Standardized B and V photoelectric light curves of Algol are made with the observations obtained during 1982-84 with the 40-cm and the 61-cm reflectors of Yonsei University Observatory.
Ho-Il Kim
doaj