Zobrazeno 1 - 10
of 3 610
pro vyhledávání: '"STEVENS, MICHAEL"'
Autor:
Rivera, Yeimy J., Badman, Samuel T., Stevens, Michael L., Raines, Jim M., Owen, Christopher J., Paulson, Kristoff, Niembro, Tatiana, Livi, Stefano A., Lepri, Susan T., Landi, Enrico, Halekas, Jasper S., Ervin, Tamar, Dewey, Ryan M., Coburn, Jesse T., Bale, Stuart D., Alterman, B. L.
Since Parker Solar Probe's (Parker's) first perihelion pass at the Sun, large amplitude Alfv\'en waves grouped in patches have been observed near the Sun throughout the mission. Several formation processes for these magnetic switchback patches have b
Externí odkaz:
http://arxiv.org/abs/2409.03645
Autor:
Ruffolo, David, Thepthong, Panisara, Pongkitiwanichakul, Peera, Roy, Sohom, Pecora, Francesco, Bandyopadhyay, Riddhi, Chhiber, Rohit, Usmanov, Arcadi V., Stevens, Michael, Badman, Samuel, Romeo, Orlando, Wang, Jiaming, Goodwill, Joshua, Goldstein, Melvyn L., Matthaeus, William H.
Using Parker Solar Probe data from orbits 8 through 17, we examine fluctuation amplitudes throughout the critical region where the solar wind flow speed approaches and then exceeds the Alfv\'en wave speed, taking account of various exigencies of the
Externí odkaz:
http://arxiv.org/abs/2409.02612
Autor:
Rivera, Yeimy J., Badman, Samuel T., Stevens, Michael L., Verniero, Jaye L., Stawarz, Julia E., Shi, Chen, Raines, Jim M., Paulson, Kristoff W., Owen, Christopher J., Niembro, Tatiana, Louarn, Philippe, Livi, Stefano A., Lepri, Susan T., Kasper, Justin C., Horbury, Timothy S., Halekas, Jasper S., Dewey, Ryan M., De Marco, Rossana, Bale, Stuart D.
Publikováno v:
Science, 385, 962-966 (2024)
After leaving the Sun's corona, the solar wind continues to accelerate and cools, but more slowly than expected for a freely expanding adiabatic gas. We use in situ measurements from the Parker Solar Probe and Solar Orbiter spacecrafts to investigate
Externí odkaz:
http://arxiv.org/abs/2409.00267
Autor:
Samara, Evangelia, Arge, Charles N., Pinto, Rui F., Magdalenic, Jasmina, Wijsen, Nicolas, Stevens, Michael L., Rodriguez, Luciano, Poedts, Stefaan
We employ Parker Solar Probe (PSP) observations during the latest solar minimum period (years 2018 -2021) to calibrate the version of the Wang-Sheeley-Arge (WSA) coronal model used in the European space weather forecasting tool EUHFORIA. WSA provides
Externí odkaz:
http://arxiv.org/abs/2405.09693
Autor:
Cheng, Wenshuai, Liu, Ying D., Ran, Hao, Jiao, Yiming, Stevens, Michael L., Kasper, Justin C.
We identify and examine the solar wind intervals near the sonic critical point (i.e., $M_S \sim 1$) observed by the Parker Solar Probe (PSP). The near subsonic wind intervals show similar properties: a low density, an extremely low velocity, a low pr
Externí odkaz:
http://arxiv.org/abs/2404.05557
Autor:
Liu, Ying D., Zhu, Bei, Ran, Hao, Hu, Huidong, Liu, Mingzhe, Zhao, Xiaowei, Wang, Rui, Stevens, Michael L., Bale, Stuart D.
We report on the first direct in situ measurements of a fast coronal mass ejection (CME) and shock in the corona, which occurred on 2022 September 5. In situ measurements from the Parker Solar Probe (PSP) spacecraft near perihelion suggest two shocks
Externí odkaz:
http://arxiv.org/abs/2401.06449
Autor:
Palmerio, Erika, Carcaboso, Fernando, Khoo, Leng Ying, Salman, Tarik M., Sánchez-Cano, Beatriz, Lynch, Benjamin J., Rivera, Yeimy J., Pal, Sanchita, Nieves-Chinchilla, Teresa, Weiss, Andreas J., Lario, David, Mieth, Johannes Z. D., Heyner, Daniel, Stevens, Michael L., Romeo, Orlando M., Zhukov, Andrei N., Rodriguez, Luciano, Lee, Christina O., Cohen, Christina M. S., Rodríguez-García, Laura, Whittlesey, Phyllis L., Dresing, Nina, Oleynik, Philipp, Jebaraj, Immanuel C., Fischer, David, Schmid, Daniel, Richter, Ingo, Auster, Hans-Ulrich, Fraschetti, Federico, Mierla, Marilena
On 2022 February 15, an impressive filament eruption was observed off the solar eastern limb from three remote-sensing viewpoints, namely Earth, STEREO-A, and Solar Orbiter. In addition to representing the most-distant observed filament at extreme ul
Externí odkaz:
http://arxiv.org/abs/2401.01875
Autor:
Walters, Jada, Klein, Kristopher G., Lichko, Emily, Stevens, Michael L., Verscharen, Daniel, Chandran, Benjamin D. G.
In this work, we investigate how the complex structure found in solar wind proton velocity distribution functions (VDFs), rather than the commonly assumed two-component bi-Maxwellian structure, affects the onset and evolution of parallel-propagating
Externí odkaz:
http://arxiv.org/abs/2308.14944
Autor:
Ofman, Leon, Boardsen, Scott A, Jian, Lan K, Mostafavi, Parisa, Verniero, Jaye L, Livi, Roberto, McManus, Michael, Rahmati, Ali, Larson, Davin, Stevens, Michael L
Past observations show that solar wind (SW) acceleration occurs inside the sub-Alfvenic region, reaching the local Alfven speed at typical distances ~ 10 - 20 Rs (solar radii). Recently, Parker Solar Probe (PSP) traversed regions of sub-Alfvenic SW n
Externí odkaz:
http://arxiv.org/abs/2307.13410