Results 61 to 70 of about 411,589 (180)

Probing the close environment of young stellar objects with interferometry

, 2003
The study of Young Stellar Objects (YSOs) is one of the most exciting topics that can be undertaken by long baseline optical interferometry. The magnitudes of these objects are at the edge of capabilities of current optical interferometers, limiting the ...
A Natta, B Reipurth, C Bertout, CJ Burrows, CP Dullemond, D Lynden-Bell, D Ward-Thompson, EI Chiang, F Malbet, F Malbet, F Malbet, FC Adams, GH Herbig, J-L Monin, JD Monnier, JP Berger, KR Stapelfeldt, L Hartmann, LA Hillenbrand, N Calvet, NI Shakura, P André, PG Tuthill, PG Tuthill, PJV Garcia, R Lachaume, R Millan-Gabet, R Millan-Gabet, R.L. Akeson, RL Akeson, RP Nelson, S Wolf, SJ Kenyon, SVW Beckwith, T Boehm, V Mendoza, V Mendoza   +36 more
core   +2 more sources

Lactea: Web‐Based Spectrum‐Preserving Multi‐Resolution Visualization of the GAIA Star Catalog

Computer Graphics Forum, EarlyView.
Abstract The explosion of data in astronomy has resulted in an era of unprecedented opportunities for discovery. The GAIA mission's catalog, containing a large number of light sources (mostly stars) with several parameters such as sky position and proper motion, is playing a significant role in advancing astronomy research and has been crucial in ...
Reem Alghamdi, Markus Hadwiger, Guido Reina, Alberto Jaspe‐Villanueva   +3 more
wiley   +1 more source

Collisionless plasma interpenetration in a strong magnetic field for laboratory astrophysics experiments

, 2014
A theoretical analysis for astrophysics-oriented laser-matter interaction experiments in the presence of a strong ambient magnetic field is presented. It is shown that the plasma collision in the ambient magnetic field implies significant perturbations ...
d'Humières, Emmanuel, Korneev, Philipp, Tikhonchuk, Vladimir   +2 more
core   +1 more source

Exploring non-linear cosmological matter diffusion coefficients [PDF]

Proceedings of the Second Argentinian-Brazilian Meeting on Gravitation, Relativistic Astrophysics and Cosmology (2015). ISBN 978-987-24948-2-7, 2014
Since microscopic velocity diffusion can be incorporated into general relativity in a consistent way, we study cosmological background solutions when the diffusion phenomena takes place in an expanding universe. Our focus here relies on the nature of the diffusion coefficient $\sigma$ which measures the magnitude of such transport phenomena.
arxiv  

Primordial flares, flux tubes, MHD waves in the early universe and genesis of cosmic gamma ray bursts [PDF]

arXiv, 2009
It is conjectured that energy sources of the gamma ray bursts are similar to energy sources which trigger solar and stellar transient activity phenomena like flares, plasma accelerated flows in the flux tubes and, dissipation of energy and acceleration of particles by the MHD waves.
arxiv  

Alternative Approaches for Estimating Highest‐Density Regions

International Statistical Review, EarlyView.
Summary Among the variety of statistical intervals, highest‐density regions (HDRs) stand out for their ability to effectively summarise a distribution or sample, unveiling its distinctive and salient features. An HDR represents the minimum size set that satisfies a certain probability coverage, and current methods for their computation require ...
Nina Deliu, Brunero Liseo
wiley   +1 more source

Microtextures and structures in metal–sulfide grains in NWA 869 meteorite and their relation to thermal history of L‐chondrite parent body

Meteoritics &Planetary Science, Volume 60, Issue 3, Page 616-631, March 2025.
Abstract Results of microanalysis study of NWA 869 meteorite, an ordinary chondrite, where silicates, Fe‐Ni alloys, and troilite are major constituents, are reported. The presented study of microtextures in metallic and sulfide grains provides information on processes occurring from the asteroid's accretion, through the impacts until cooling.
Paulina Skirak, Gabriela Opiła, Adam Piestrzyński, Gabriela Kozub‐Budzyń, Czesław Kapusta   +4 more
wiley   +1 more source

POEMMA: Probe Of Extreme Multi-Messenger Astrophysics [PDF]

, 2017
The Probe Of Extreme Multi-Messenger Astrophysics (POEMMA) mission is being designed to establish charged-particle astronomy with ultra-high energy cosmic rays (UHECRs) and to observe cosmogenic tau neutrinos (CTNs).
Adams, J. H., Aloisio, R., Anchordoqui, L. A., Bergman, D. R., Bertaina, M. E., Bertone, P., Bustamante, M., Christl, M. J., Csorna, S. E., Eser, J. B., Fenu, F., Guépin, C., Hays, E. A., Hunter, S., Judd, E., Jun, I., Kotera, K., Krizmanic, J. F., Kuznetsov, E., Mackovjak, S., Martinez-Sierra, L. M., Mastafa, M., Matthews, J. N., McEnery, J., Mitchell, J. W., Neronov, A., Olinto, A. V., Otte, A. N., Parizot, E., Paul, T. C., Perkins, J. S., Prevot, G., Reardon, P., Reno, M. H., Sarazin, F., Shinozaki, K., Stecker, F., Streitmatter, R., Venters, T., Wiencke, L., Young, R. M.   +40 more
core   +2 more sources

Dark Energy Stars [PDF]

Proceedings of the Texas Conference on Relativistic Astrophysics, Stanford, CA, December, 2004, 2005
Event horizons and closed time-like curves cannot exist in the real world for the simple reason that they are inconsistent with quantum mechanics. Following ideas originated by Robert Laughlin, Pawel Mazur, Emil Mottola, David Santiago, and the speaker it is now possible to describe in some detail what happens physically when one approaches and crosses
arxiv  

Impact crater lake evolution and concomitant hydrothermal mineralization recorded by the Wörnitzostheim drill core at the Ries impact structure, Germany

Meteoritics &Planetary Science, Volume 60, Issue 4, Page 795-822, April 2025.
Abstract Impact‐generated hydrothermal systems and postimpact crater lake systems are well‐documented geological phenomena; however, evidence of hydrothermal venting into impact crater lake systems has rarely been reported. We investigated the well‐preserved contact between hydrothermally altered impact melt‐bearing breccia (outer/surficial suevite ...
Matthew J. O. Svensson, Gordon R. Osinski, Fred J. Longstaffe, Timothy A. Goudge, Haley M. Sapers   +4 more
wiley   +1 more source