Search Results - "Rouillard, P."

Modeling the Formation and Evolution of Solar Wind Microstreams: From Coronal Plumes to Propagating Alfvénic Velocity Spikes by Gannouni, Bahaeddine, Réville, Victor, Rouillard, Alexis P.

“…Abstract We investigate the origin of mesoscale structures in the solar wind called microstreams, defined as enhancements in the solar wind speed and…”
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A Multiple Flux-tube Solar Wind Model by Pinto, Rui F., Rouillard, Alexis P.

“…We present a new model, MULTI-VP, which computes the three-dimensional structure of the solar wind and includes the chromosphere, the transition region, and…”
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Evidence for a Coronal Shock Wave Origin for Relativistic Protons Producing Solar Gamma-Rays and Observed by Neutron Monitors at Earth by Kouloumvakos, Athanasios, Rouillard, Alexis P., Share, Gerald H., Plotnikov, Illya, Murphy, Ronald, Papaioannou, Athanasios, Wu, Yihong

“…We study the solar eruptive event on 2017 September 10 that produced long-lasting >100 MeV γ-ray emission and a ground level enhancement (GLE72). The origin of…”
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DERIVING THE PROPERTIES OF CORONAL PRESSURE FRONTS IN 3D: APPLICATION TO THE 2012 MAY 17 GROUND LEVEL ENHANCEMENT by Rouillard, A. P., Plotnikov, I., Pinto, R. F., Tirole, M., Lavarra, M., Zucca, P., Vainio, R., Tylka, A. J., Vourlidas, A., Rosa, M. L. De, Linker, J., Warmuth, A., Mann, G., Cohen, C. M. S., Mewaldt, R. A.

“…ABSTRACT We study the link between an expanding coronal shock and the energetic particles measured near Earth during the ground level enhancement of 2012 May…”
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Near-Sun observations of an F-corona decrease and K-corona fine structure by Howard, R. A., Vourlidas, A., Bothmer, V., Colaninno, R. C., DeForest, C. E., Gallagher, B., Hall, J. R., Hess, P., Higginson, A. K., Korendyke, C. M., Kouloumvakos, A., Lamy, P. L., Liewer, P. C., Linker, J., Linton, M., Penteado, P., Plunkett, S. P., Poirier, N., Raouafi, N. E., Rich, N., Rochus, P., Rouillard, A. P., Socker, D. G., Stenborg, G., Thernisien, A. F., Viall, N. M.

“…Remote observations of the solar photospheric light scattered by electrons (the K-corona) and dust (the F-corona or zodiacal light) have been made from the…”
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Magnetized Winds of M-type Stars and Star–Planet Magnetic Interactions: Uncertainties and Modeling Strategy by Réville, Victor, Jasinski, Jamie M., Velli, Marco, Strugarek, Antoine, Brun, Allan Sacha, Murphy, Neil, Regoli, Leonardo H., Rouillard, Alexis P., Varela, Jacobo

“…Abstract M-type stars are the most common stars in the Universe. They are ideal hosts for the search of exoplanets in the habitable zone (HZ), as their small…”
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Extended 3He-rich Time Periods Observed by Solar Orbiter: Magnetic Connectivity and Sources by Kouloumvakos, A., Mason, G. M., Ho, G. C., Allen, R. C., Wimmer-Schweingruber, Robert F., Rouillard, A. P., Rodriguez-Pacheco, J.

“…Observations of Solar Energetic Particles (SEPs) using the Suprathermal Ion Spectrograph (SIS), which is part of the Energetic Particle Detector suite on the…”
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Multispacecraft observation of magnetic cloud erosion by magnetic reconnection during propagation by Ruffenach, A., Lavraud, B., Owens, M. J., Sauvaud, J.-A., Savani, N. P., Rouillard, A. P., Démoulin, P., Foullon, C., Opitz, A., Fedorov, A., Jacquey, C. J., Génot, V., Louarn, P., Luhmann, J. G., Russell, C. T., Farrugia, C. J., Galvin, A. B.

“…During propagation, Magnetic Clouds (MC) interact with their environment and, in particular, may reconnect with the solar wind around it, eroding away part of…”
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Statistical study of magnetic cloud erosion by magnetic reconnection by Ruffenach, A., Lavraud, B., Farrugia, C. J., Démoulin, P., Dasso, S., Owens, M. J., Sauvaud, J.-A., Rouillard, A. P., Lynnyk, A., Foullon, C., Savani, N. P., Luhmann, J. G., Galvin, A. B.

“…Several recent studies suggest that magnetic reconnection is able to erode substantial amounts of the outer magnetic flux of interplanetary magnetic clouds…”
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Spatial and temporal variation in New Hampshire bat diets by O’Rourke, Devon, Rouillard, Nicholas P., Parise, Katy L., Foster, Jeffrey T.

“…Insectivorous bats consume a diverse array of arthropod prey, with diets varying by bat species, sampling location, and season. North American bat diets remain…”
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The Rise and Fall of Open Solar Flux During the Current Grand Solar Maximum by Lockwood, M, Rouillard, A. P, Finch, I. D

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The very slow solar wind: Properties, origin and variability by Sanchez‐Diaz, Eduardo, Rouillard, Alexis P., Lavraud, Benoit, Segura, Kevin, Tao, Chihiro, Pinto, Rui, Sheeley, N. R., Plotnikov, Illya

“…Solar wind slower than 300 km/s, hereafter termed very slow solar wind (VSSW), is seldom observed at 1 AU. It was, however, commonly measured inside 0.7 AU by…”
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First imaging of corotating interaction regions using the STEREO spacecraft by Rouillard, A. P., Davies, J. A., Forsyth, R. J., Rees, A., Davis, C. J., Harrison, R. A., Lockwood, M., Bewsher, D., Crothers, S. R., Eyles, C. J., Hapgood, M., Perry, C. H.

“…Plasma parcels are observed propagating from the Sun out to the large coronal heights monitored by the Heliospheric Imagers (HI) instruments onboard the NASA…”
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THE LONGITUDINAL PROPERTIES OF A SOLAR ENERGETIC PARTICLE EVENT INVESTIGATED USING MODERN SOLAR IMAGING by ROUILLARD, A. P, SHEELEY, N. R, SAVANI, N. P, STCYR, O. C, SZABO, A, TYLKA, A, VOURLIDAS, A, NG, C. K, RAKOWSKI, C, COHEN, C. M. S, MEWALDT, R. A, MASON, G. M, REAMES, D

“…We use combined high-cadence, high-resolution, and multi-point imaging by the Solar-Terrestrial Relations Observatory (STEREO) and the Solar and Heliospheric…”
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CMEs in the Heliosphere: I. A Statistical Analysis of the Observational Properties of CMEs Detected in the Heliosphere from 2007 to 2017 by STEREO/HI-1 by Harrison, R. A., Davies, J. A., Barnes, D., Byrne, J. P., Perry, C. H., Bothmer, V., Eastwood, J. P., Gallagher, P. T., Kilpua, E. K. J., Möstl, C., Rodriguez, L., Rouillard, A. P., Odstrčil, D.

“…We present a statistical analysis of coronal mass ejections (CMEs) imaged by the Heliospheric Imager (HI) instruments on board NASA’s twin-spacecraft STEREO…”
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Stereoscopic imaging of an Earth‐impacting solar coronal mass ejection: A major milestone for the STEREO mission by Davis, C. J., Davies, J. A., Lockwood, M., Rouillard, A. P., Eyles, C. J., Harrison, R. A.

“…We present stereoscopic images of an Earth‐impacting Coronal Mass Ejection (CME). The CME was imaged by the Heliospheric Imagers onboard the twin STEREO…”
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A synoptic view of solar transient evolution in the inner heliosphere using the Heliospheric Imagers on STEREO by Davies, J. A., Harrison, R. A., Rouillard, A. P., Sheeley Jr, N. R., Perry, C. H., Bewsher, D., Davis, C. J., Eyles, C. J., Crothers, S. R., Brown, D. S.

“…By exploiting data from the STEREO/heliospheric imagers (HI) we extend a well‐established technique developed for coronal analysis by producing time‐elongation…”
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Excess open solar magnetic flux from satellite data: 2. A survey of kinematic effects by Lockwood, M., Owens, M., Rouillard, A. P.

“…We investigate the “flux excess” effect, whereby open solar flux estimates from spacecraft increase with increasing heliocentric distance. We analyze the…”
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Interpreting the Properties of Solar Energetic Particle Events by Using Combined Imaging and Modeling of Interplanetary Shocks by Rouillard, A. P, Odstrc˘il, D, Sheeley, N. R, Tylka, A, Vourlidas, A, Mason, G, Wu, C.-C, Savani, N. P, Wood, B. E, Ng, C. K, Stenborg, G, Szabo, A, St. Cyr, O. C

“…Images of the solar corona obtained by the Solar-Terrestrial Relations Observatory (STEREO) provide high-cadence, high-resolution observations of a compression…”
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Effects of solar wind magnetosphere coupling recorded at different geomagnetic latitudes: Separation of directly-driven and storage/release systems by Finch, I. D., Lockwood, M. L., Rouillard, A. P.

“…The effect on geomagnetic activity of solar wind speed, compared with that of the strength of the interplanetary magnetic field, differs with geomagnetic…”
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