5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of OsloNO150 papers
- Bay Area Environmental Research InstituteUS127 papers
- Goddard Space Flight CenterUS95 papers
- NASA Research ParkUS82 papers
- NSF NCAR High Altitude ObservatoryUS82 papers
- NSF National Center for Atmospheric ResearchUS70 papers
- National Astronomical Observatory of JapanJP65 papers
- Center for Astrophysics Harvard & SmithsonianUS61 papers
- Stanford UniversityUS61 papers
- Centre National de la Recherche ScientifiqueFR59 papers
- Max Planck Institute for Solar System ResearchDE56 papers
- Marshall Space Flight CenterUS44 papers
22 papers · 1 filter
On the power spectrum of solar surface flows
M. Rieutord, T. Roudier, F. Rincon +4
The aim of this work is to give new observational constraints on solar surface flows by determining the horizontal scale dependence of the velocity and intensity fields, as represe…
An Intriguing Chromospheric Jet Observed by Hinode: I. Fine Structure Kinematics and Evidence of Unwinding Twists
Wei Liu, Thomas E. Berger, Alan M. Title +1
We report a chromospheric jet lasting for more than 1 hr observed by Hinode Solar Optical Telescope in unprecedented detail. The ejection occurred in three episodes separated by 12…
Simulation of a flux emergence event and comparison with observations by Hinode
L. Yelles Chaouche, M. C. M. Cheung, S. K. Solanki +2
We study the observational signature of flux emergence in the photosphere using synthetic data from a 3D MHD simulation of the emergence of a twisted flux tube. Several stages in t…
Ubiquitous High Speed Transition Region and Coronal Upflows in the Quiet Sun
Scott W. Mcintosh, Bart De Pontieu
We study the line profiles of a range of transition region (TR) emission lines observed in typical quiet Sun regions. In magnetic network regions, the Si IV 1402Å, C IV 1548Å, N V…
Observing Episodic Coronal Heating Events Rooted in Chromospheric Activity
Scott W. McIntosh, Bart De Pontieu
We present results of a multi-wavelength study of episodic plasma injection into the corona of AR 10942. We exploit long-exposure images of the Hinode and Transition Region and Cor…
Terrorism: Mechanisms of Radicalization Processes, Control of Contagion and Counter-Terrorist Measures
Alhaji Cherif, Hirotoshi Yoshioka, Wei Ni +1
The spread of radical ideologies is a key to fanaticism, recruitment and terrorist activities. Hence, preventing such activities requires predictive models capable of identifying a…
On-disk counterparts of type II spicules in the Ca II 854.2 nm and Halpha lines
L. Rouppe van der Voort, J. Leenaarts, B. de Pontieu +2
Recently a second type of spicules was discovered at the solar limb with the Solar Optical Telescope (SOT) onboard the Japanese Hinode spacecraft. These previously unrecognized typ…
Stereoscopic Polar Plume Reconstructions from Stereo/Secchi Images
L. Feng, B. Inhester, S. K. Solanki +7
We present stereoscopic reconstructions of the location and inclination of polar plumes of two data sets based on the two simultaneously recorded images taken by the EUVI telescope…
4D Modeling of CME expansion and EUV dimming observed with STEREO/EUVI
Markus J. Aschwanden
This is the first attempt to model the kinematics of a CME launch and the resulting EUV dimming quantitatively with a self-consistent model. Our 4D-model assumes self-similar expan…
On the propagation of p-modes into the solar chromosphere
A. G. de Wijn, S. W. McIntosh, B. De Pontieu
We employ tomographic observations of a small region of plage to study the propagation of waves from the solar photosphere to the chromosphere using a Fourier phase-difference anal…
Estimating the Chromospheric Absorption of Transition Region Moss Emission
Bart De Pontieu, Viggo H. Hansteen, Scott W. McIntosh +1
Many models for coronal loops have difficulty explaining the observed EUV brightness of the transition region, which is often significantly less than theoretical models predict. Th…
Spicule-like structures observed in 3D realistic MHD simulations
J. Martinez-Sykora, V. Hansteen, B. De Pontieu +1
We analyze features that resemble type i spicules in two different 3D numerical simulations in which we include horizontal magnetic flux emergence in a computational domain spannin…
Explosive events associated with a surge
M. S. Madjarska, J. G. Doyle, B. de Pontieu
The solar atmosphere contains a wide variety of small-scale transient features. Here, we explore the inter-relation between some of them such as surges, explosive events and blinke…
Coronal radiation belts
H. S. Hudson, A. L. MacKinnon, S. F. N. Frewen +1
The magnetic field of the solar corona has a large-scale dipole character, which maps into the bipolar field in the solar wind. Using standard representations of the coronal field,…
On a transition from solar-like coronae to rotation-dominated jovian-like magnetospheres in ultracool main-sequence stars
C. J. Schrijver
For main-sequence stars beyond spectral type M5 the characteristics of magnetic activity common to warmer solar-like stars change into the brown-dwarf domain: the surface magnetic…
A Systematic Study of the Stellar Populations and ISM in Galaxies out to the Virgo Cluster
Rolf A. Jansen, Paul Scowen, Matthew Beasley +6
We present a compelling case for a systematic and comprehensive study of the resolved and unresolved stellar populations, ISM, and immediate environments of galaxies throughout the…
Prominence Formation Associated with an Emerging Helical Flux Rope
Takenori J. Okamoto, Saku Tsuneta, Bruce W. Lites +12
The formation and evolution process and magnetic configuration of solar prominences remain unclear. In order to study the formation process of prominences, we examine continuous ob…
Helioseismic Signature of Chromospheric Downflows in Acoustic Travel-Time Measurements from Hinode
Kaori Nagashima, Takashi Sekii, Alexander G. Kosovichev +2
We report on a signature of chromospheric downflows in two emerging-flux regions detected by time-distance helioseismology analysis. We use both chromospheric intensity oscillation…
Mesoscale dynamics on the Sun's surface from HINODE observations
T. Roudier, M. Rieutord, D. Brito +5
Aims: The interactions of velocity scales on the Sun's surface, from granulation to supergranulation are still not understood, nor are their interaction with magnetic fields. We th…
A Critical Assessment of Nonlinear Force-Free Field Modeling of the Solar Corona for Active Region 10953
Marc L. DeRosa, Carolus J. Schrijver, Graham Barnes +16
Nonlinear force-free field (NLFFF) models are thought to be viable tools for investigating the structure, dynamics and evolution of the coronae of solar active regions. In a series…
Observational Signatures of Simulated Reconnection Events in the Solar Chromosphere and Transition Region
L. Heggland, B. De Pontieu, V. H. Hansteen
We present the results of numerical simulations of wave-induced magnetic reconnection in a model of the solar atmosphere. In the magnetic field geometry we study in this article, t…
Entangled Mechanical Oscillators
J. D. Jost, J. P. Home, J. M. Amini +6
Hallmarks of quantum mechanics include superposition and entanglement. In the context of large complex systems, these features should lead to situations like Schrodinger's cat, whi…