Zobrazeno 1 - 10
of 28 504
pro vyhledávání: '"Blackman, A."'
Autor:
Mohapatra, Ananya, Blackman, Eric G.
The origin of magnetic white dwarfs has been a long standing puzzle. Proposed origin mechanisms have included: fossil fields frozen in from the progenitor convective core; a dynamo in the progenitor envelope; crystallization dynamos in sufficiently c
Externí odkaz:
http://arxiv.org/abs/2412.05400
Autor:
Bennett, David P., Bhattacharya, Aparna, Beaulieu, Jean-Philippe, Koshimoto, Naoki, Blackman, Joshua W., Bond, Ian A., Ranc, Clement, Rektsini, Natalia, Terry, Sean K., Vandorou, Aikaterini
We present high angular resolution imaging from the {\sl Hubble Space Telescope} combined with adaptive optics imaging results from the {\sl Keck}-II telescope to determine the mass of the OGLE-2012-BLG-0563L host star and planet to be $M_{\rm host}
Externí odkaz:
http://arxiv.org/abs/2412.03651
Light volatile elements in lunar regolith are thought to be a mixture of the solar wind and Earth's atmosphere, the latter sourced in the absence of geomagnetic field. However, the extent to which both the current and primitive geodynamo influence th
Externí odkaz:
http://arxiv.org/abs/2412.00519
Autor:
Kotorashvili, K., Blackman, E. G.
Very low-mass main-sequence stars reveal some curious trends in observed rotation period distributions that require abating the spin-down that standard rotational evolution models would otherwise imply. By dynamically coupling magnetically mediated s
Externí odkaz:
http://arxiv.org/abs/2411.17916
Seismic and geodynamic studies indicate that the boundary between the Earth's liquid outer core and solid mantle is not spherical, but is likely characterized by topography in the form of inverted mountains and valleys that have typical amplitudes of
Externí odkaz:
http://arxiv.org/abs/2410.19934
Autor:
Terry, Sean K., Beaulieu, Jean-Philippe, Bennett, David P., Bhattacharya, Aparna, Hulberg, Jon, Huston, Macy J., Koshimoto, Naoki, Blackman, Joshua W., Bond, Ian A., Cole, Andrew A., Lu, Jessica R., Ranc, Clément, Rektsini, Natalia E., Vandorou, Aikaterini
We present an analysis of adaptive optics (AO) images from the Keck-I telescope of the microlensing event MOA-2011-BLG-262. The original discovery paper by Bennett et al. 2014 reports two distinct possibilities for the lens system; a nearby gas giant
Externí odkaz:
http://arxiv.org/abs/2410.09147
When compressed, certain lattices undergo phase transitions that may allow nuclei to gain significant kinetic energy. To explore the dynamics of this phenomenon, we develop a framework to study Coulomb coupled N-body systems constrained to a parametr
Externí odkaz:
http://arxiv.org/abs/2410.04311
Autor:
Ji, H., Gao, L., Pomraning, G., Sakai, K., Guo, F., Li, X., Stanier, A., Milder, A., Follett, R. F., Fiksel, G., Blackman, E. G., Chien, A., Zhang, S.
Magnetic reconnection is a ubiquitous fundamental process in space and astrophysical plasmas that rapidly converts magnetic energy into some combination of flow energy, thermal energy, and non-thermal energetic particles. Over the past decade, a new
Externí odkaz:
http://arxiv.org/abs/2410.02138
Autor:
Sahai, Raghvendra, Alcolea, Javier, Balick, Bruce, Blackman, Eric G., Bujarrabal, Valentin, Castro-Carrizo, Arancha, De Marco, Orsola, Kastner, Joel, Kim, Hyosun, Lagadec, Eric, Lee, Chin-Fei, Sabin, Laurence, Santander-Garcia, M., Contreras, Carmen Sánchez, Tafoya, Daniel, Ueta, Toshiya, Vlemmings, Wouter, Zijlstra, Albert
As mass-losing asymptotic giant branch (AGB) stars evolve to planetary nebulae (PNe), the mass outflow geometries transform from nearly spherical to extreme aspherical. The physical mechanisms governing this transformation are widely believed to be l
Externí odkaz:
http://arxiv.org/abs/2409.06038
Earth's geodynamo has operated for over 3.5 billion years. The magnetic field is currently powered by thermocompositional convection in the outer core, which involves the release of light elements and latent heat as the inner core solidifies. However
Externí odkaz:
http://arxiv.org/abs/2409.06031