Zobrazeno 1 - 10
of 4 038
pro vyhledávání: '"A. A. Vidotto"'
Hot Jupiters might reside inside the Alfv\'en surface of their host star wind, where the stellar wind is dominated by magnetic energy. The implications of such a sub-Alfv\'enic environment for atmospheric escape are not fully understood. Here, we emp
Externí odkaz:
http://arxiv.org/abs/2410.08881
Autor:
Namekata, Kosuke, Ikuta, Kai, Petit, Pascal, Airapetian, Vladimir S., Vidotto, Aline A., Heinzel, Petr, Wollmann, Jiří, Maehara, Hiroyuki, Notsu, Yuta, Inoue, Shun, Marsden, Stephen, Morin, Julien, Jeffers, Sandra V., Neiner, Coralie, Paudel, Rishi R., Avramova-Boncheva, Antoaneta A., Gendreau, Keith, Shibata, Kazunari
EK Draconis, a nearby young solar-type star (G1.5V, 50-120 Myr), is known as one of the best proxies for inferring the environmental conditions of the young Sun. The star frequently produces superflares and Paper I presented the first evidence of an
Externí odkaz:
http://arxiv.org/abs/2410.05523
Autor:
Callingham, J. R., Pope, B. J. S., Kavanagh, R. D., Bellotti, S., Daley-Yates, S., Damasso, M., Grießmeier, J. -M., Güdel, M., Günther, M., Kao, M. M., Klein, B., Mahadevan, S., Morin, J., Nichols, J. D., Osten, R. A., Pérez-Torres, M., Pineda, J. S., Rigney, J., Saur, J., Stefánsson, G., Turner, J. D., Vedantham, H., Vidotto, A. A., Villadsen, J., Zarka, P.
Radio detections of stellar systems provide a window onto stellar magnetic activity and the space weather conditions of extrasolar planets, information that is difficult to attain at other wavelengths. There have been recent advances observing aurora
Externí odkaz:
http://arxiv.org/abs/2409.15507
AB Dor is a young solar-type star with a surface large-scale magnetic field $10^2$ to $10^3$ times stronger than the that of the Sun. Although strong magnetic fields are thought to inhibit coronal mass ejections (CMEs), dimming signatures typically a
Externí odkaz:
http://arxiv.org/abs/2408.00637
Autor:
Egan, Arika, France, Kevin, Sreejith, Aickara Gopinathan, Fossati, Luca, Koskinen, Tommi, Fleming, Brian, Nell, Nicholas, Suresh, Ambily, Cauley, P. Wilson, Desert, Jean-Michele, Petit, Pascal, Vidotto, Aline A.
We present new near-ultraviolet (NUV, $\lambda$ = 2479 $-$ 3306 $\r{A}$) transmission spectroscopy of KELT-9b, the hottest known exoplanet, obtained with the Colorado Ultraviolet Transit Experiment ($CUTE$) CubeSat. Two transits were observed on Sept
Externí odkaz:
http://arxiv.org/abs/2407.13656
Autor:
Rovelli, Carlo, Vidotto, Francesca
This is a review of some recent developments on quantum gravity aspects of black hole physics. In particular, we focus on a scenario leading to the prediction of the existence of a Planck-mass quasi-stable object, that could form a component of dark
Externí odkaz:
http://arxiv.org/abs/2407.09584
Autor:
Bellotti, S., Evensberget, D., Vidotto, A. A., Lavail, A., Lueftinger, T., Hussain, G. A. J., Morin, J., Petit, P., Saikia, S. Boro, Danielski, C., Micela, G.
The accurate characterisation of the stellar magnetism of planetary host stars has been gaining momentum, especially in the context of transmission spectroscopy investigations of exoplanets. Indeed, the magnetic field regulates the amount of energeti
Externí odkaz:
http://arxiv.org/abs/2405.19052
Autor:
Alam, Munazza K., Kirk, James, Santos, Leonardo A. Dos, McCreery, Patrick, Allan, Andrew P., Owen, James E., Vidotto, Aline A., Allart, Romain, Bourrier, Vincent, Espinoza, Néstor, King, George W., López-Morales, Mercedes, Seidel, Julia V.
We search for excess in-transit absorption of neutral helium at 1.083 $\mu$m in the atmospheres of the young (<800 Myr) sub-Jovian (0.2-0.5 $\rm R_{J}$) planets HD 63433b, K2-100b, and V1298 Tau c using high-resolution (R~25,000) transit observations
Externí odkaz:
http://arxiv.org/abs/2405.17294
Autor:
Ascione, Giacomo, Vidotto, Anna
In this paper, we consider the time change of the diffusion process on the 2-dimensional unit sphere generated by the Laplace-Beltrami operator, perturbed by means of a longitudinal vector field. First, this is done by addressing the problem of findi
Externí odkaz:
http://arxiv.org/abs/2403.05202
Publikováno v:
Phys. Rev. D 109, 106016 (2024)
Quantum gravitational tunneling effects are expected to give rise to a number of interesting observable phenomena, including, in particular, the evolution of black holes at the end of their existence or the emergence of the early universe from a quan
Externí odkaz:
http://arxiv.org/abs/2402.09038