Zobrazeno 1 - 10
of 3 869
pro vyhledávání: '"Osten P"'
Autor:
Kowalski, Adam F., Osten, Rachel A., Notsu, Yuta, Tristan, Isaiah I., Segura, Antigona, Maehara, Hiroyuki, Namekata, Kosuke, Inoue, Shun
Flares from M-dwarf stars can attain energies up to $10^4$ times larger than solar flares but are generally thought to result from similar processes of magnetic energy release and particle acceleration. Larger heating rates in the low atmosphere are
Externí odkaz:
http://arxiv.org/abs/2411.07913
Autor:
Couperus, Andrew A., Henry, Todd J., Osten, Rachel A., Jao, Wei-Chun, Vrijmoet, Eliot Halley, Kar, Aman, Horch, Elliott
We present an investigation into the rotation and stellar activity of four fully convective M dwarf `twin' wide binaries. Components in each pair have (1) astrometry confirming they are common-proper-motion binaries, (2) Gaia $BP$, $RP$, and 2MASS $J
Externí odkaz:
http://arxiv.org/abs/2410.04726
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
We prove the existence of a family of integrable deformations of $\mathbb{Z}_N$-coset models in two dimensions. Our approach uses and generalises the method of auxiliary fields that was recently introduced for the principal chiral model by Ferko and
Externí odkaz:
http://arxiv.org/abs/2409.04523
This article shows that the approach to generalised curvature and torsion pioneered by Polacek and Siegel [1] is a generalisation of Cartan Geometry -- rendering latter natural from the point of view of O(d,d)-generalised geometry. We present this ap
Externí odkaz:
http://arxiv.org/abs/2409.00176
Autor:
Wilner, David J., Matthews, Brenda C., McGuire, Brett, Bergner, Jennifer, Walter, Fabian, Somerville, Rachel, DeCesar, Megan, van der Horst, Alexander, Osten, Rachel, Corsi, Alessandra, Baker, Andrew, Bergin, Edwin, Bolatto, Alberto, Blecha, Laura, Bower, Geoff, Burke-Spolaor, Sarah, Carrasco-Gonzalez, Carlos, de Keller, Katherine, de Pater, Imke, Dickinson, Mark, Drout, Maria, Hallinan, Gregg, Hatsukade, Bunyo, Isella, Andrea, Izumi, Takuma, Johnson, Megan, Lazio, Joseph, Leroy, Adam, Maccarone, Thomas, Mills, Betsy, Momose, Munetake, Ng, Cherry, Rosolowsky, Eric, Sakai, Nami, Zensus, Anton
In 2017, the next generation Very Large Array (ngVLA) Science Advisory Council, together with the international astronomy community, developed a set of five Key Science Goals (KSGs) to inform, prioritize and refine the technical capabilities of a fut
Externí odkaz:
http://arxiv.org/abs/2408.14497
Autor:
Lescano, Eric, Osten, David
The known stringy non-relativistic (NR) limit of the universal NS-NS sector of supergravity has a finite Lagrangian due to non-trivial cancellations of divergent parts coming from the metric and the $B$-field. We demonstrate that in Double Field Theo
Externí odkaz:
http://arxiv.org/abs/2405.10362
Autor:
Paudel, Rishi R., Barclay, Thomas, Youngblood, Allison, Quintana, Elisa V., Schlieder, Joshua E., Vega, Laura D., Gilbert, Emily A., Osten, Rachel A., Peacock, Sarah, Tristan, Isaiah I., Feliz, Dax L., Boyd, Patricia T., Davenport, James R. A., Huber, Daniel, Kowalski, Adam F., Monsue, Teresa A., Silverstein, Michele L.
We present a comprehensive multiwavelength investigation into flares and activity in nearby M~dwarf stars. We leverage the most extensive contemporaneous dataset obtained through the Transiting Exoplanet Sky Survey (TESS), Kepler/K2, the Neil Gehrels
Externí odkaz:
http://arxiv.org/abs/2404.12310
Autor:
Osten, David
A universal structure of world-volume theories of half-BPS branes in string and M-theory in terms of exceptional generalised geometry is observed. Previous constructions are extended in two ways: from internal $d$-dimensional space to full 11- or 10-
Externí odkaz:
http://arxiv.org/abs/2402.10269
Publikováno v:
A&A 687, A95 (2024)
We aim at advancing our understanding of magnetic activity and the underlying dynamo mechanism at the end of the main-sequence. To this end, we collected simultaneous X-ray and radio observations for a sample of M7-L0 dwarfs using XMM-Newton jointly
Externí odkaz:
http://arxiv.org/abs/2401.17292