Results 11 to 20 of about 146,124 (295)

Upstream proton cyclotron waves: occurrence and amplitude dependence on IMF cone angle at Mars — from MAVEN observations

Earth and Planetary Physics, 2020
Proton cyclotron waves (PCWs) can be generated by ion pickup of Martian exospheric particles in the solar wind. The solar wind ion pickup process is highly dependent on the “IMF cone angle” — the angle between the solar wind velocity and the ...
Di Liu, ZhongHua Yao, Yong Wei, ZhaoJin Rong, LiCan Shan, Stiepen Arnaud, Espley Jared, HanYing Wei, WeiXing Wan   +8 more
doaj   +1 more source

Interplanetary Magnetic Field Effect on the Location of the Martian Bow Shock: MAVEN Observations

The Astrophysical Journal, 2023
The Martian bow shock (BS) is generated with the mass-loading and magnetic pileup processes when the solar wind interacts with the Martian ionosphere. In this vein, the interplanetary magnetic field (IMF) frozen in the solar wind can affect the location ...
H. Y. Sui, M. Wang, J. Y. Lu, Y. Zhou, J. Wang   +4 more
doaj   +1 more source

Multi-scale evolution of Kelvin–Helmholtz waves at the Earth's magnetopause during southward IMF periods [PDF]

Physics of Plasmas, 2022
At the Earth's low-latitude magnetopause, the Kelvin–Helmholtz instability (KHI), driven by the velocity shear between the magnetosheath and magnetosphere, has been frequently observed during northward interplanetary magnetic field (IMF) periods. However, the signatures of the KHI have been much less frequently observed during southward IMF periods ...
T. K. M. Nakamura, K. A. Blasl, H. Hasegawa, T. Umeda, Y.-H. Liu, S. A. Peery, F. Plaschke, R. Nakamura, J. C. Holmes, J. E. Stawarz, W. D. Nystrom   +10 more
openaire   +3 more sources

Diffusive Plasma Transport by the Magnetopause Kelvin-Helmholtz Instability During Southward IMF

Frontiers in Astronomy and Space Sciences, 2022
At the Earth’s low-latitude magnetopause, the Kelvin-Helmholtz (KH) waves, which are driven by the super-Alfvénic velocity shear across the magnetopause, have been frequently observed during periods of northward interplanetary-magnetic-field (IMF) and ...
T. K. M. Nakamura, T. K. M. Nakamura, K. A. Blasl, K. A. Blasl, Y. -H. Liu, S. A. Peery   +5 more
doaj   +1 more source

Reverse dynamical evolution of Eta Chamaeleontis [PDF]

, 2013
In the scope of the star formation process, it is unclear how the environment shapes the initial mass function (IMF). While observations of open clusters propose a universal picture for the IMF from the substellar domain up to a few solar masses, the ...
Aarseth, Abt, Adams, Barrado y Navascués, Bastian, Basu, Bochanski, Brandeker, Brandeker, C. Becker, Chabrier, de Wit, Duchêne, Duquennoy, E. Moraux, G. Duchêne, Hennebelle, Jeffries, Jilinski, King, Kirk, Kraus, Kraus, Kraus, Kroupa, Kroupa, Kroupa, Kroupa, Kroupa, Kroupa, Kustaanheimo, Köhler, Lodieu, Luhman, Luhman, Luhman, Lyo, Lyo, Lyo, Mamajek, Marks, Marks, Maschberger, Massey, Mikkola, Miller, Moraux, Moraux, Moraux, Murphy, Ortega, Parker, Parravano, Raghavan, Reggiani, Reipurth, Reipurth, Salpeter, Scally, Song, Stamatellos, T. Maschberger, Thies, Thies, Thies, Tutukov, W. Lawson, Whitworth   +67 more
core   +2 more sources

Statistical Birkeland current distributions from magnetic field observations by the Iridium constellation [PDF]

Annales Geophysicae, 2008
We present a statistical analysis of Birkeland currents derived from Iridium magnetometer data acquired in the Northern Hemisphere to determine the dependence of large-scale currents on the interplanetary magnetic field (IMF) direction.
B. J. Anderson, H. Korth, C. L. Waters, D. L. Green, P. Stauning   +4 more
doaj   +1 more source

The Star Formation Epoch of the Most Massive Early-Type Galaxies [PDF]

, 2006
We present new Keck spectroscopy of early-type galaxies in three galaxy clusters at z~0.5. We focus on the fundamental plane (FP) relation, and combine the kinematics with structural parameters determined from HST images.
Baugh C. M., Bower R. G., Buser R., Cappellari M., Clemens M. S., Jorgensen I., Jorgensen I., Jorgensen I., Jorgensen I., Kauffmann G., Le Borgne J. F., Nagashima M., Pieter G. van Dokkum, Roeland P. van der Marel, Tinsley B. M., van Dokkum P. G.   +15 more
core   +2 more sources

Testing the universal stellar IMF on the metallicity distribution in the bulges of the Milky Way and M31 [PDF]

, 2007
We test whether the universal initial mass function (UIMF) or the integrated galaxial IMF (IGIMF) can be employed to explain the metallicity distribution (MD) of giants in the Galactic bulge.
Ballero, Ballero, Baugh, Baumgardt, Bromm, Chabrier, Chiappini, Elmegreen, F. Matteucci, Ferreras, Figer, François, Fulbright, Immeli, Kim, Koen, Kroupa, Kuijken, Larson, Massey, Massey, Matteucci, Matteucci, Matteucci, Matteucci, McWilliam, Nakamura, Nomoto, Oey, Okamoto, P. Kroupa, Padoan, Paresce, Piotto, Rich, Rich, S. K. Ballero, Salaris, Salpeter, Samland, Sarajedini, Scalo, Schaerer, Schwarzschild, Tosi, Weidner, Weidner, Zoccali, Zoccali   +48 more
core   +3 more sources

Transition of the Stellar Initial Mass Function Explored with Binary Population Synthesis [PDF]

, 2013
The stellar initial mass function (IMF) plays a crucial role in determining the number of surviving stars in galaxies, the chemical composition of the interstellar medium, and the distribution of light in galaxies.
Aoki, Wako, Campbell, Simon W., Doherty, Carolyn L., Fujimoto, Masayuki Y., Gil-Pons, Pilar, Katsuta, Yutaka, Komiya, Yutaka, Suda, Takuma, Wood, Peter R., Yamada, Shimako   +9 more
core   +3 more sources

The Central Dark Matter Fraction of Massive Early-Type Galaxies

Frontiers in Astronomy and Space Sciences, 2022
Dark matter (DM) is predicted to be the dominant mass component in galaxies. In the central region of early-type galaxies it is expected to account for a large amount of the total mass, although the stellar mass should still represent the majority of the
C. Tortora, N. R. Napolitano, N. R. Napolitano   +2 more
doaj   +1 more source