The Madison, Wis., branch of Workers World Party hosted Takiyah Thompson on Feb. 4 as part of their national speaking tour for Black Liberation Month. Thompson is one of the freedom fighters who led the people’s removal of a Confederate statue in Durham, N.C., on Aug. 14.Thompson spoke about the connection between the symbolic dimensions of white supremacy, exemplified by the Durham statue and other Confederate statues which dotted the landscape until recently. The speaker referred to “institutional, political and economic legacies,” such as mass incarceration and severe income disparities between different racial groups in the U.S. Attendees included community residents, supporters of the broad-based Wisconsin Bail Out the People Movement (WIBOPM) and Workers World Party members from Madison, Chicago and Milwaukee.FacebookTwitterWhatsAppEmailPrintMoreShare thisFacebookTwitterWhatsAppEmailPrintMoreShare this
Generation of EMIC Waves and Effects on Particle Precipitation During a Solar Wind Pressure Intensification With Bz>0.
During geomagnetic storms, some fraction of the solar wind energy is coupled via reconnection at the dayside magnetopause, a process that requires a southward interplanetary magnetic field Bz. Through a complex sequence of events, some of this energy ultimately drives the generation of electromagnetic ion cyclotron (EMIC) waves, which can then scatter energetic electrons and ions from the radiation belts. In the event described in this paper, the interplanetary magnetic field remained northward throughout the event, a condition unfavorable for solar wind energy coupling through low‐latitude reconnection. While this resulted in SYM/H remaining positive throughout the event (so this may not be considered a storm, in spite of the very high solar wind densities), pressure fluctuations were directly transferred into and then propagated throughout the magnetosphere, generating EMIC waves on global scales. The generation mechanism presumably involved the development of temperature anisotropies via perpendicular pressure perturbations, as evidenced by strong correlations between the pressure variations and the intensifications of the waves globally. Electron precipitation was recorded by the Balloon Array for RBSP Relativistic Electron Losses balloons, although it did not have the same widespread signatures as the waves and, in fact, appears to have been quite patchy in character. Observations from Van Allen Probe A satellite (at postmidnight local time) showed clear butterfly distributions, and it may be possible that the EMIC waves contributed to the development of these distribution functions. Ion precipitation was also recorded by the Polar‐orbiting Operational Environmental Satellite satellites, though tended to be confined to the dawn‐dusk meridians.
2SHARESShareShareSharePrintMailGooglePinterestDiggRedditStumbleuponDeliciousBufferTumblr But you might want to consider text notifications and Apple Pay for this wearable.by: Tim McAlpineMy Apple Watch arrived in early June. I ordered it on the release date (don’t judge me), and waited and waited for it to arrive. Meanwhile, I read the good, the tepid and the bad reviews. I did my best to reserve judgment.When it came, I installed many of the available watch apps, tried them once and haven’t been back. The capabilities of most apps are limited and, in most cases, navigating the tiny screen is harder than just grabbing your iPhone. This will likely change with operating system upgrades.For now, I find myself using the clock (go figure), notifications, and the built-in health and fitness tracking capabilities the most. I’ve worn a Fitbit on my wrist for the past couple of years, and I do like the Apple Watch better for basic step and calorie-counting. Having a built-in heart-rate monitor is a nice bonus. continue reading »