Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Finley, Adam"'
Autor:
Finley, Adam J.
During the solar cycle, the Sun's magnetic field polarity reverses due to the emergence, cancellation, and advection of magnetic flux towards the rotational poles. Flux emergence events occasionally cluster together, although it is unclear if this is
Externí odkaz:
http://arxiv.org/abs/2410.18244
Impact of far-side structures observed by Solar Orbiter on coronal and heliospheric wind simulations
Autor:
Perri, Barbara, Finley, Adam, Réville, Victor, Parenti, Susanna, Brun, Allan Sacha, Strugarek, Antoine, Buchlin, Éric
Solar Orbiter provides unique capabilities to understand the heliosphere. In particular, it has made observations of the far-side of the Sun and provides unique information to improve space weather monitoring. We aim to quantify how far-side data wil
Externí odkaz:
http://arxiv.org/abs/2404.06794
For Sun-like stars, the generation of toroidal magnetic field from poloidal magnetic field is an essential piece of the dynamo mechanism powering their magnetism. Previous authors have estimated the net toroidal flux generated in each hemisphere of t
Externí odkaz:
http://arxiv.org/abs/2401.10984
Autor:
Metcalfe, Travis S., Strassmeier, Klaus G., Ilyin, Ilya V., Buzasi, Derek, Kochukhov, Oleg, Ayres, Thomas R., Basu, Sarbani, Chontos, Ashley, Finley, Adam J., See, Victor, Stassun, Keivan G., van Saders, Jennifer L., Sepulveda, Aldo G., Ricker, George R.
Publikováno v:
Astrophys. J. 960, L6 (2024)
The consistently low activity level of the old solar analog 51 Peg not only facilitated the discovery of the first hot Jupiter, but also led to the suggestion that the star could be experiencing a magnetic grand minimum. However, the 50 year time ser
Externí odkaz:
http://arxiv.org/abs/2401.01944
Autor:
Finley, Adam J., Brun, Allan Sacha
Publikováno v:
A&A 679, A29 (2023)
The strength and morphology of the Sun's magnetic field evolves significantly during the solar cycle, with the overall polarity of the Sun's magnetic field reversing during the maximum of solar activity. Long-term changes are also observed in sunspot
Externí odkaz:
http://arxiv.org/abs/2309.10850
Autor:
Metcalfe, Travis S., Buzasi, Derek, Huber, Daniel, Pinsonneault, Marc H., van Saders, Jennifer L., Ayres, Thomas R., Basu, Sarbani, Drake, Jeremy J., Egeland, Ricky, Kochukhov, Oleg, Petit, Pascal, Saar, Steven H., See, Victor, Stassun, Keivan G., Li, Yaguang, Bedding, Timothy R., Breton, Sylvain N., Finley, Adam J., Garcia, Rafael A., Kjeldsen, Hans, Nielsen, Martin B., Ong, J. M. Joel, Rorsted, Jakob L., Stokholm, Amalie, Winther, Mark L., Clark, Catherine A., Godoy-Rivera, Diego, Ilyin, Ilya V., Strassmeier, Klaus G., Jeffers, Sandra V., Marsden, Stephen C., Vidotto, Aline A., Baliunas, Sallie, Soon, Willie
Publikováno v:
Astron. J. 166, 167 (2023)
The bright star $\lambda$ Ser hosts a hot Neptune with a minimum mass of 13.6 $M_\oplus$ and a 15.5 day orbit. It also appears to be a solar analog, with a mean rotation period of 25.8 days and surface differential rotation very similar to the Sun. W
Externí odkaz:
http://arxiv.org/abs/2308.09808
Autor:
Metcalfe, Travis S., Strassmeier, Klaus G., Ilyin, Ilya V., van Saders, Jennifer L., Ayres, Thomas R., Finley, Adam J., Kochukhov, Oleg, Petit, Pascal, See, Victor, Stassun, Keivan G., Jeffers, Sandra V., Marsden, Stephen C., Morin, Julien, Vidotto, Aline A.
Publikováno v:
Astrophys. J. 948, L6 (2023)
During the first half of their main-sequence lifetimes, stars rapidly lose angular momentum to their magnetized winds, a process known as magnetic braking. Recent observations suggest a substantial decrease in the magnetic braking efficiency when sta
Externí odkaz:
http://arxiv.org/abs/2304.09896
Autor:
Finley, Adam J., Brun, Allan Sacha
Publikováno v:
A&A 674, A42 (2023)
Sun-like stars shed angular momentum due to the presence of magnetised stellar winds. Magnetohydrodynamic models have been successful in exploring the dependence of this "wind-braking torque" on various stellar properties, however the influence of su
Externí odkaz:
http://arxiv.org/abs/2302.12700
Autor:
Finley, Adam J., Brun, Sacha A., Carlsson, Mats, Szydlarski, Mikolaj, Hansteen, Viggo, Shoda, Munehito
Current models of the solar wind must approximate (or ignore) the small-scale dynamics within the solar atmosphere, however these are likely important in shaping the emerging wave-turbulence spectrum and ultimately heating/accelerating the coronal pl
Externí odkaz:
http://arxiv.org/abs/2207.02878
Autor:
Metcalfe, Travis S., Finley, Adam J., Kochukhov, Oleg, See, Victor, Ayres, Thomas R., Stassun, Keivan G., van Saders, Jennifer L., Clark, Catherine A., Godoy-Rivera, Diego, Ilyin, Ilya V., Pinsonneault, Marc H., Strassmeier, Klaus G., Petit, Pascal
Publikováno v:
Astrophys. J. 933, L17 (2022)
The rotation rates of main-sequence stars slow over time as they gradually lose angular momentum to their magnetized stellar winds. The rate of angular momentum loss depends on the strength and morphology of the magnetic field, the mass-loss rate, an
Externí odkaz:
http://arxiv.org/abs/2206.08540