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
Magnetar Flare-driven Bumpy Declining Light Curves in Hydrogen-poor Superluminous Supernovae
The Astrophysical Journal, 2023 Recent observations indicate that hydrogen-poor superluminous supernovae (SLSNe-I) often display bumpy declining light curves. However, the cause of these undulations remains unclear.
Xiao-Fei Dong +3 more
doaj +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
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
Dynamic equilibrium and oscillations of stars with uneven mass of particles of the medium
Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2023 Background. The study examines a model of the structure and evolution of stars in dynamic equilibrium, supplemented by a new analysis of the zonal flow velocity, new elements for describing the evolution of the heat flow, and the introduction of unequal ...
Viktor M. Zhuravlev
doaj +1 more source
The complex light curve of the afterglow of GRB071010A [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 11 pages, 3 figures, MNRAS, in ...
Covino, S. +53 more
openaire +7 more sources
A unifying explanation of complex frequency spectra of gamma Dor, SPB and Be stars: combination frequencies and highly non-sinusoidal light curves [PDF]
, 2015 There are many Slowly Pulsating B (SPB) stars and γ Dor stars in the Kepler mission data set. The light curves of these pulsating stars have been classified phenomenologically into stars with symmetric light curves and with asymmetric light curves.
Kurtz, Donald W. +9 more
core +1 more source
Spectral and Photometric Studies of NGC 7469 in the Optical Range
UniverseThe galaxy NGC 7469 is a bright infrared source with an active galactic nucleus (AGN) and an intense star-forming region with a radius of approximately 500 parsecs, where the star formation rate is estimated to be 20–50 M⊙yr−1.
Saule Shomshekova +5 more
doaj +1 more source
Light curves and frequency spectra
, 2023 <p>The light curve, wavelet transform, and frequency spectra analysis of each stars in our sample. The upper panel displays the light curves of the star, with it’s EPIC identifier.
Alan, Pereira
core +1 more source
Simple Method of Light Field Calculation for Shaping of 3D Light Curves
Photonics, 2023 We propose a method for generating three-dimensional light fields with given intensity and phase distributions using purely phase transmission functions.
Svetlana N. Khonina +4 more
doaj +1 more source