Zobrazeno 1 - 10
of 1 487
pro vyhledávání: '"Zhao, L L"'
Autor:
Zhao, L. -L., Zank, G. P., Opher, M., Zieger, B., Li, H., Florinski, V., Adhikari, L., Zhu, X., Nakanotani, M.
Magnetic field fluctuations measured in the heliosheath by the Voyager spacecraft are often characterized as compressible, as indicated by a strong fluctuating component parallel to the mean magnetic field. However, the interpretation of the turbulen
Externí odkaz:
http://arxiv.org/abs/2407.21673
Pickup ions (PUIs) play a crucial role in the heliosphere, contributing to the mediation of large-scale structures such as the distant solar wind, the heliospheric termination shock (HTS), and the heliopause. While magnetic reconnection is thought to
Externí odkaz:
http://arxiv.org/abs/2305.04910
Publikováno v:
Frontiers in Astronomy and Space Sciences, 9 (2022)
We investigate particle acceleration in an MHD-scale system of multiple current sheets by performing 2D and 3D MHD simulations combined with a test particle simulation. The system is unstable for the tearing-mode instability, and magnetic islands are
Externí odkaz:
http://arxiv.org/abs/2205.07366
Autor:
Kilpua, E. K. J., Good, S. W., Ala-Lahti, M., Osmane, A., Pal, S., Soljento, J. E., Zhao, L. L., Bale, S.
Sheaths ahead of interplanetary coronal mass ejections (ICMEs) are turbulent heliospheric structures. Knowledge of their structure and fluctuations is important for understanding their geoeffectiveness, their role in accelerating particles, and the i
Externí odkaz:
http://arxiv.org/abs/2204.13058
Autor:
Zank, G. P., Zhao, L. -L., Adhikri, L., Telloni, D., Kasper, J. C., Stevens, M., Rahmati, A., Bale, S. D.
Parker Solar Probe (PSP) entered a region of the sub-Alfvenic solar wind during encounter 8 and we present the first detailed analysis of low-frequency turbulence properties in this novel region. The magnetic field and flow velocity vectors were high
Externí odkaz:
http://arxiv.org/abs/2202.02563
Autor:
Getachew, T., McComas, D. J., Joyce, C. J., Palmerio, E., Christian, E. R., Cohen, C. M. S., Desai, M. I., Giacalone, J., Hill, M. E., Matthaeus, W. H., McNutt, R. L., Mitchell, D. G., Mitchell, J. G., Rankin, J. S., Roelof, E. C., Schwadron, N. A., Szalay, J. R., Zank, G. P., Zhao, L. -L., Lynch, B. J., Phan, T. D., Bale, S. D., Whittlesey, P. L., Kasper, J. C.
In this paper we examine a low-energy SEP event observed by IS$\odot$IS's Energetic Particle Instrument-Low (EPI-Lo) inside 0.18 AU on September 30, 2020. This small SEP event has a very interesting time profile and ion composition. Our results show
Externí odkaz:
http://arxiv.org/abs/2112.04671
Solar wind turbulence is anisotropic with respect to the mean magnetic field. Anisotropy leads to ambiguity when interpreting in-situ turbulence observations in the solar wind because an apparent change in the measurements could be due either to the
Externí odkaz:
http://arxiv.org/abs/2112.01711
Autor:
Zhao, L. L., Zank, G. P., He, J. S., Telloni, D., Hu, Q., Li, G., Nakanotani, M., Adhikari, L., Kilpua, E. K. J., Horbury, T. S., O'Brien, H., Evans, V., Angelini, V.
Publikováno v:
A&A 656, A3 (2021)
Solar Orbiter observed an interplanetary coronal mass ejection (ICME) event at 0.8 AU on 2020 April 19. The ICME was also observed by Wind at 1 AU on 2020 April 20. An interplanetary shock wave was driven in front of the ICME. We focus on the transmi
Externí odkaz:
http://arxiv.org/abs/2102.03301
Excalibur: A Non-Parametric, Hierarchical Wavelength-Calibration Method for a Precision Spectrograph
Excalibur is a non-parametric, hierarchical framework for precision wavelength-calibration of spectrographs. It is designed with the needs of extreme-precision radial velocity (EPRV) in mind, which require that instruments be calibrated or stabilized
Externí odkaz:
http://arxiv.org/abs/2010.13786
Autor:
Zhao, L. -L., Zank, G. P., Hu, Q., Telloni, D., Chen, Y., Adhikari, L., Nakanotani, M., Kasper, J. C., Huang, J., Bale, S. D., Korreck, K. E., Case, A. W., Stevens, M., Bonnell, J. W., de Wit, T. Dudok, Goetz, K., Harvey, P. R., MacDowall, R. J., Malaspina, D. M., Pulupa, M., Larson, D. E., Livi, R., Whittlesey, P., Klein, K. G., Raouafi, N. E.
Publikováno v:
A&A 650, A12 (2021)
We systematically search for magnetic flux rope structures in the solar wind to within the closest distance to the Sun of 0.13 AU, using data from the third and fourth orbits of the Parker Solar Probe. We extend our previous magnetic helicity based t
Externí odkaz:
http://arxiv.org/abs/2010.04664