As scholar-activists, the authors explore efforts of police disarmament within the context of an emerging social movement sweeping the University of California system. The Disarm UC coalition challenges the myth of policing as necessary for the production of a “safe” society, especially in an era in which fear-mongering has helped to naturalize far-right and authoritarian systems of control. Instead, this article asks how policing is always already a violent system within the American academy and how these historical precursors normalize the current militarization and mobilization of lethal force within universities. Such normalized violence reproduces historical inequities within academia and has material consequences for students and workers. Finally, the authors explore how social movements like Disarm UC disrupt police violence within the university, producing new social and material conditions for change.
Long-term X-ray Variability of NGC 4945. AMARA MILLER (University of California Davis, Davis, CA 95616) GRZEGORZ MADEJSKI (Stanford Linear Accelerator Center, Stanford, CA, 94305). Though short-term X-ray variability has been studied for the active galaxy NGC 4945, long-term studies promise to contribute to our understanding of the processes involved in accretion onto supermassive black holes. In order to understand the relationship between black hole mass and breaks in the power spectral density (PSD), the long-term X-ray variability of NGC 4945 was studied over the energy range 8-30 keV. Observations occurred over the year 2006 using the Rossi X-ray Timing Explorer. The data was reduced using the package FTOOLS, most notably the scripts Rex and faxbary. Light curves were produced and a PSD was obtained using a Fast Fourier Transform algorithm. Preliminary studies of the light curve show greater X-ray variability at higher frequencies. This result complements previous studies of NGC 4945 by Martin Mueller. However, the PSD produced must go through further study before accurate results can be obtained. A way to account for the window function of the PSD must be found before the behavior at lower frequencies can be studied with accuracy and the relationship between black hole mass and the break in NGC 4945's PSD can be better understood. Further work includes exploration into ways to subtract the window function from the PSD, as well as a closer analysis of the PSD produced by averaging the data into logarithmic bins. The possibility of a better way to bin the data should be considered so that the window function would be minimized.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.