Results 41 to 50 of about 14,588 (266)
Localizing flares to understand stellar magnetic fields and space weather in exo‐systems
Astronomische Nachrichten, Volume 343, Issue 4, May 2022., 2022 Abstract Stars are uniform spheres, but only to first order. The way in which stellar rotation and magnetism break this symmetry places important observational constraints on stellar magnetic fields, and factors in the assessment of the impact of stellar activity on exoplanet atmospheres.
Ekaterina Ilin +2 more
wiley +1 more source
CubeSpec space mission. I. Asteroseismology of massive stars from time series optical spectroscopy: science requirements and target list prioritisation [PDF]
Astronomy & Astrophysics, 2021 Context. There is currently a niche for providing high-cadence, high resolution, time-series optical spectroscopy from space, which can be filled by using a low-cost cubesat mission.
D. Bowman +10 more
semanticscholar +1 more source
Magnetic and Rotational Evolution of ρ CrB from Asteroseismology with TESS [PDF]
Astrophysical Journal, 2021 During the first half of main-sequence lifetimes, the evolution of rotation and magnetic activity in solar-type stars appears to be strongly coupled. Recent observations suggest that rotation rates evolve much more slowly beyond middle age, while stellar
T. Metcalfe +17 more
semanticscholar +1 more source
Applied Sciences, 2022 Asteroseismology studies the physical structure of stars by analyzing their solar-type oscillations as seismic waves and frequency spectra. The physical processes in stars and oscillations are similar to the Sun, which is more evolved to the red-giant ...
Ali Raza +5 more
doaj +1 more source
Detection and Optimization of Traffic Networks Based on Voronoi Diagram
Discrete Dynamics in Nature and Society, Volume 2021, Issue 1, 2021., 2021 Traffic peak is an important parameter of modern transport systems. It can be used to calculate the indices of road congestion, which has become a common problem worldwide. With accurate information about traffic peaks, transportation administrators can make better decisions to optimize the traffic networks and therefore enhance the performance of ...
Rui Tao +6 more
wiley +1 more source
Asteroseismology Across the Hertzsprung–Russell Diagram
Annual Review of Astronomy and Astrophysics, 2022 Asteroseismology has grown from its beginnings three decades ago to a mature field teeming with discoveries and applications. This phenomenal growth has been enabled by space photometry with precision 10–100 times better than ground-based observations ...
D. Kurtz
semanticscholar +1 more source
TESS asteroseismology of the Kepler red giants [PDF]
, 2021 Red giant asteroseismology can provide valuable information for studying the Galaxy as demonstrated by space missions like CoRoT and Kepler. However, previous observations have been limited to small data sets and fields-of-view. The TESS mission provides
D. Stello +13 more
semanticscholar +1 more source
Asteroseismology with SuperWASP [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractThe highly successful SuperWASP planetary transit finding programme has surveyed a large fraction of both the northern and southern skies. There now exists in its archive over 420 billion photometric measurements for more than 31 million stars.
Smalley, Barry, Smalley, Barry
openaire +4 more sources
The Pre-main Sequence: Challenges and Prospects for Asteroseismology
Frontiers in Astronomy and Space Sciences, 2022 Stars do not simply pop up on the main sequence. Before the stars arrive on the zero-age main sequence, they form in the collapses of molecular clouds, gain matter through accretion processes, and compress their cores until hydrogen can burn in full ...
Konstanze Zwintz, Thomas Steindl
doaj +1 more source
Neutron stars in f(R,T) gravity with conserved energy-momentum tensor: Hydrostatic equilibrium and asteroseismology [PDF]
, 2021 We investigate the equilibrium and radial stability of spherically symmetric relativistic stars, considering a polytropic equation of state (EoS), within the framework of f(R,T) gravity with a conservative energy-momentum tensor.
J. M. Pretel +3 more
semanticscholar +1 more source