Zobrazeno 1 - 10
of 421
pro vyhledávání: '"MacDowall, R."'
Autor:
Sioulas, Nikos, Huang, Zesen, Shi, Chen, Velli, Marco, Tenerani, Anna, Vlahos, Loukas, Bowen, Trevor A., Bale, Stuart D., Bonnell, J. W., Harvey, P. R., Larson, Davin, Pulupa, arc, Livi, Roberto, Woodham, L. D., Horbury, T. S., Stevens, Michael L., de Wit, T. Dudok, MacDowall, R. J., Malaspina, David M., Goetz, K., Huang, Jia, Kasper, Justin, Owen, Christopher J., Maksimović, Milan, Louarn, P., Fedorov, A.
Parker Solar Probe and Solar Orbiter data are used to investigate the radial evolution of magnetic turbulence between $0.06 ~ \lesssim R ~\lesssim 1$ au. The spectrum is studied as a function of scale, normalized to the ion inertial scale $d_{i}$. In
Externí odkaz:
http://arxiv.org/abs/2209.02451
Autor:
Halekas, J. S., Whittlesey, P., Larson, D. E., Maksimovic, M., Livi, R., Berthomier, M., Kasper, J. C., Case, A. W., Stevens, M. L., Bale, S. D., MacDowall, R. J., Pulupa, M. P.
We utilize observations from the Parker Solar Probe (PSP) to study the radial evolution of the solar wind in the inner heliosphere. We analyze electron velocity distribution functions observed by the Solar Wind Electrons, Alphas, and Protons suite to
Externí odkaz:
http://arxiv.org/abs/2207.06563
Autor:
Bandyopadhyay, R., Matthaeus, W. H., McComas, D. J., Chhiber, R., Usmanov, A. V., Huang, J., Livi, R., Larson, D. E., Kasper, J. C., Case, A. W., Stevens, M., Whittlesey, P., Romeo, O. M., Bale, S. D., Bonnell, J. W., de Wit, T. Dudok, Goetz, K., Harvey, P. R., MacDowall, R. J., Malaspina, D. M., Pulupa, M.
In the lower solar coronal regions where the magnetic field is dominant, the Alfven speed is much higher than the wind speed. In contrast, the near-Earth solar wind is strongly super-Alfvenic, i.e., the wind speed greatly exceeds the Alfven speed. Th
Externí odkaz:
http://arxiv.org/abs/2201.10718
Autor:
Desai, M. I., Mitchell, D. G., McComas, D. J., Drake, J. F., Phan, T., Szalay, J. R., Roelof, E. C., Giacalone, J., Hill, M. E., Christian, E. R., Schwadron, N. A., McNutt Jr., R. L., Wiedenbeck, M. E., Joyce, C., Cohen, C. M. S., Davis, A. J., Krimigis, S. M., Leske, R. A., Matthaeus, W. H., Malandraki, O., Mewaldt, R. A., Labrador, A., Stone, E. C., Bale, S. D., Verniero, J., Rahmati, A., Whittlesey, P., Livi, R., Larson, D., Pulupa, M., MacDowall, R. J., Niehof, J. T., Kasper, J. C., Horbury, T. S.
We present observations of >10-100 keV/nucleon suprathermal (ST) H, He, O, and Fe ions associated with crossings of the heliospheric current sheet (HCS) at radial distances <0.1 au from the Sun. Our key findings are: 1) very few heavy ions are detect
Externí odkaz:
http://arxiv.org/abs/2111.00954
Autor:
Agapitov, O., Drake, J. F., Swisdak, M., Bale, S. D., Horbury, T. S., Kasper, J. C., MacDowall, R. J., Mozer, F. S., Phan, T. D., Pulupa, M., Raouafi, N. E., Velli, M.
A major discovery of Parker Solar Probe (PSP) was the presence of large numbers of localized increases in the radial solar wind speed and associated sharp deflections of the magnetic field - switchbacks (SB). A possible generation mechanism of SBs is
Externí odkaz:
http://arxiv.org/abs/2109.04016
Autor:
Burns, Jack, Bale, Stuart, Bradley, Richard, Ahmed, Z., Allen, S. W., Bowman, J., Furlanetto, S., MacDowall, R., Mirocha, J., Nhan, B., Pivovaroff, M., Pulupa, M., Rapetti, D., Slosar, A., Tauscher, K.
One of the last unexplored windows to the cosmos, the Dark Ages and Cosmic Dawn, can be opened using a simple low frequency radio telescope from the stable, quiet lunar farside to measure the Global 21-cm spectrum. This frontier remains an enormous g
Externí odkaz:
http://arxiv.org/abs/2103.05085
Autor:
Froment, C., Krasnoselskikh, V., de Wit, T. Dudok, Agapitov, O., Fargette, N., Lavraud, B., Larosa, A., Kretzschmar, M., Jagarlamudi, V. K., Velli, M., Malaspina, D., Whittlesey, P. L., Bale, S. D., Case, A. W., Goetz, K., Kasper, J. C., Korreck, K. E., Larson, D. E., MacDowall, R. J., Mozer, F. S., Pulupa, M., Revillet, C., Stevens, M. L.
Publikováno v:
A&A 650, A5 (2021)
Parker Solar Probe's first encounters with the Sun revealed the presence of ubiquitous localised magnetic deflections in the inner heliosphere; these structures, often called switchbacks, are particularly striking in solar wind streams originating fr
Externí odkaz:
http://arxiv.org/abs/2101.06279
Autor:
Cattell, C., Breneman, A., Dombeck, J., Short, B., Wygant, J., Halekas, J., Case, Tony, Kasper, J., Larson, D., Stevens, Mike, Whittesley, P., de Wit, S. Bale T. Dudok, Goodrich, K., MacDowall, R., Moncuquet, M., Malaspina, D., Pulupa, M.
Publikováno v:
ApJL 911 L29 2021
Observations of plasma waves by the Fields Suite and of electrons by the Solar Wind Electrons Alphas and Protons Investigation (SWEAP) on Parker Solar Probe provide strong evidence for pitch angle scattering of strahl-energy electrons by narrowband w
Externí odkaz:
http://arxiv.org/abs/2101.05098
Autor:
Liu, M., Issautier, K., Meyer-Vernet, N., Moncuquet, M., Maksimovic, M., Halekas, J. S., Huang, J., Griton, L., Bale, S., Bonnell, J. W., Case, A. W., Goetz, K., Harvey, P. R., Kasper, J. C., MacDowall, R. J., Malaspina, D. M., Pulupa, M., Stevens, M. L.
Publikováno v:
A&A 650, A14 (2021)
We investigate the solar wind energy flux in the inner heliosphere using 12-day observations around each perihelion of Encounter One (E01), Two (E02), Four (E04), and Five (E05) of Parker Solar Probe (PSP), respectively, with a minimum heliocentric d
Externí odkaz:
http://arxiv.org/abs/2101.03121
Autor:
Larosa, A., Krasnoselskikh, V., de Witınst, T. Dudok, Agapitov, O., Froment, C., Jagarlamudi, V. K., Velli, M., Bale, S. D., Case, A. W., Goetz, K., Harvey, Keith P., Kasper, J. C., Korreck, K. E., Larson, D. E., MacDowall, R. J., Malaspina, D., Pulupa, M., Revillet, C., Stevens, M. L.
Publikováno v:
A&A 650, A3 (2021)
{Parker Solar Probe's first solar encounter has revealed the presence of sudden magnetic field deflections that are called switchbacks and are associated with proton velocity enhancements in the slow alfv\'{e}nic solar wind.} {We study their statisti
Externí odkaz:
http://arxiv.org/abs/2012.10420