Zobrazeno 1 - 10
of 3 003
pro vyhledávání: '"Graham, S P"'
Autor:
Granovsky, Samuel, Kosovichev, Alexander G., Sadykov, Viacheslav M., Kerr, Graham S., Allred, Joel C.
Between 2017 and 2024, the Helioseismic and Magnetic Imager (HMI) onboard the Solar Dynamics Observatory has observed numerous white-light solar flares (WLFs). HMI spectro-polarimetric observations of certain WLFs, in particular the X9.3 flare of Sep
Externí odkaz:
http://arxiv.org/abs/2410.07440
Autor:
Simões, Paulo J. A., Fletcher, Lyndsay, Hudson, Hugh S., Kerr, Graham S., Penn, Matt, Lopez, Karla F.
Solar flares are powerful particle accelerators, and in the accepted standard flare model most of the flare energy is transported from a coronal energy-release region by accelerated electrons which stop collisionally in the chromosphere, heating and
Externí odkaz:
http://arxiv.org/abs/2406.11361
Solar flare ribbon fronts appear ahead of the bright structures that normally characterise solar flares, and can persist for an extended period of time in spatially localised patches before transitioning to `regular' bright ribbons. They likely repre
Externí odkaz:
http://arxiv.org/abs/2405.02799
Autor:
Graham, S. M., Newman, A. J., Stephen, C. J., Edmonds, A. M., Twitchen, D. J., Markham, M. L., Morley, G. W.
Nitrogen vacancy centres in diamond can be used for vector magnetometry. In this work we present a portable vector diamond magnetometer. Its vector capability, combined with feedback control and robust structure enables operation on moving platforms.
Externí odkaz:
http://arxiv.org/abs/2401.16090
Autor:
Mairs, Steve, Lee, Seonjae, Johnstone, Doug, Broughton, Colton, Lee, Jeong-Eun, Herczeg, Gregory J., Bell, Graham S., Chen, Zhiwei, Contreras-Peña, Carlos, Francis, Logan, Hatchell, Jennifer, Kim, Mi-Ryang, Liu, Sheng-Yuan, Park, Geumsook, Qiu, Keping, Wang, Yao-Te, Zhang, Xu, Team, The JCMT Transient
The JCMT Transient Survey has been monitoring eight Gould Belt low-mass star-forming regions since December 2015 and six somewhat more distant intermediate-mass star-forming regions since February 2020 with SCUBA-2 on the JCMT at \ShortS and \LongS a
Externí odkaz:
http://arxiv.org/abs/2401.03549
M-dwarf flares observed by the \textit{Transiting Exoplanet Survey Satellite} (\textit{TESS}) sometimes exhibit a "peak-bump" light-curve morphology, characterized by a secondary, gradual peak well after the main, impulsive peak. A similar "late phas
Externí odkaz:
http://arxiv.org/abs/2310.19316
The bulk of solar flare energy is deposited in the chromosphere. Flare ribbons and footpoints in the chromosphere therefore offer great diagnostic potential of flare energy release and transport processes. High quality observations from the IRIS spac
Externí odkaz:
http://arxiv.org/abs/2310.07111
Here we present the study of a compact emission source during an X1.3 flare on 2022-March-30. Within a $\sim41$~s period (17:34:48 UT to 17:35:29 UT), IRIS observations show spectral lines of Mg II, C II and Si IV with extremely broadened, asymmetric
Externí odkaz:
http://arxiv.org/abs/2309.05745
Autor:
Allred, Joel C., Kerr, Graham S., Alaoui, Meriem, Buitrago-Casas, Juan Camilo, Caspi, Amir, Chen, Bin, Chen, Thomas Y., Glesener, Lindsay, Guidoni, Silvina E., Guo, Fan, Karpen, Judith T., Musset, Sophie, Reeves, Katharine K., Shih, Albert Y.
Publikováno v:
Bulletin of the AAS, Vol. 55, Issue 3, Whitepaper #010 (10pp); 2023 July 31
Solar flares and coronal mass ejections are interrelated phenomena that together are known as solar eruptive events. These are the main drivers of space weather and understanding their origins is a primary goal of Heliophysics. In this white paper, w
Externí odkaz:
http://arxiv.org/abs/2307.14946
Publikováno v:
Physical Review Applied 21, 014003 (2024)
Vector magnetometry provides more information than scalar measurements for magnetic surveys utilized in space, defense, medical, geological and industrial applications. These areas would benefit from a mobile vector magnetometer that can operate in e
Externí odkaz:
http://arxiv.org/abs/2307.05438