Results 1 to 10 of about 1,795 (299)
The imprint of star formation on stellar pulsations [PDF]
Nature Communications, 2022 The classical stellar evolution concept assumes that when the stars arrive on the main sequence, there is no traceable mark remains about their early evolutionary history.
Thomas Steindl +2 more
doaj +8 more sources
Microwave imaging of quasi-periodic pulsations at flare current sheet [PDF]
Nature Communications, 2022 Quasi-periodic pulsations (QPPs) are frequently detected in solar and stellar flares, but the underlying physical mechanisms are still to be ascertained.
Yuankun Kou +6 more
doaj +2 more sources
QUASI-PERIODIC PULSATIONS IN SOLAR AND STELLAR FLARES. REVIEW
Solnečno-zemnaâ Fizika, 2020 This paper provides an overview of the state-of-the-art studies of oscillatory processes in solar and stellar flares, based on modern observational data from ground-based and space-borne instruments with high temporal, spatial, and spectral resolution in
E G Kupriyanova +2 more
exaly +3 more sources
Heartbeat Stars and the Ringing of Tidal Pulsations [PDF]
EPJ Web of Conferences, 2015 With the advent of high precision photometry from satellites such as Kepler and CoRoT, a whole new layer of interesting and astounding astronomical objects has been revealed: heartbeat stars are an example of such objects.
Hambleton Kelly +4 more
doaj +2 more sources
Detection of stellar oscillations in HWVir
Open Astronomy, 2016 We present our analysis of K2 observations of the binary system, HWVir. We processed the raw Kepler data and used Fourier analysis to search for periodic signals that could be associated with pulsations.
Baran Andrzej S. +2 more
doaj +2 more sources
Stellar pulsations and gravitational waves [PDF]
Banach Center Publications, 1997 Pulsating stars are important sources of information for astrophysics. Nearly every star undergoes some kind of pulsation from the early stages of its formation until the very late ones i.e. the catastrophic creation of a supercompact object (white dwarf,
Kokkotas, K. +3 more
openaire +3 more sources
Non-Radial Pulsations of Distorted Stellar Structures: Effect of Mass Variation [PDF]
International Journal of Mathematical, Engineering and Management Sciences, 2021 Eigen-frequencies (EF) of non–radial modes (NRM) of pulsations of differentially rotating (D R) and tidally distorted (T D) stellar models by considering the effect of mass variation (MV) on its equi-potentials surfaces inside a star. The method utilizes
Seema Saini +3 more
doaj +1 more source
The Directly Imaged Exoplanet Host Star 51 Eridani is a Gamma Doradus Pulsator
The Astrophysical Journal, 2022 51 Eri is well known for hosting a directly imaged giant planet and for its membership to the β Pictoris moving group. Using 2 minute cadence photometry from the Transiting Exoplanet Survey Satellite (TESS), we detect multiperiodic variability in 51 Eri ...
Aldo G. Sepulveda +5 more
doaj +1 more source
Looking into dark matter with asteroseismology
Frontiers in Astronomy and Space Sciences, 2022 Dark matter remains as an elusive component of modern Cosmology. According to previous research, stellar physics observables can be affected by the presence of hypothetical dark matter particles, which can be produced or accreted into the stars.
Adrián Ayala
doaj +1 more source
Surface imaging of stellar non-radial pulsations [PDF]
, 2003 We investigate capability of the stellar surface imaging technique for studying stellar non-radial pulsations on the basis of inversions of time series of variable line profiles without making assumptions on the specific shape of the pulsations.
J. H. Telting +2 more
core +2 more sources