Showing 1 - 2 of 2 Items

Date: 2020-01-01

Creator: Emily Ann Cohen

Access: Open access

Following the Second World War, as German Communists worked to establish a new socialist East German state, Jews who survived persecution and imprisonment by the Nazis worked to reestablish a Jewish community at the same time. Though many scholars dismiss the relationship between Jews and the Socialist Unity Party, the ruling party of the German Democratic Republic, as one characterized only by neglect and occasional political exploitation, it was much more nuanced, shaped in large part by the Cold War. Both the party and the Jewish community relied on the other to accomplish their goals, namely, survival in a new world order: The Socialist Unity Party relied on the Jewish community to maintain the German Democratic Republic's claim to legitimacy, and the Jews, few in number, relied on the party for financial support. Despite mutual benefits, however, the state and party nearly always had the upper hand. The power imbalance led Jews to find creative ways to fulfill their needs and, at several points, even prompted protest of the party’s treatment of its Jewish citizens. This paper follows the course of this relationship by focusing on the German Democratic Republic's management of sites of historical significance—which vacillated between outright destruction and dedicated protection—returning particularly to the Jewish cemetery in Berlin-Weissensee, one of the largest Jewish cemeteries in Europe. With this particular lens, this project addresses questions about memory, mythology, and agency in a socialist dictatorship and challenges assumptions about Jewish life in East Germany.

Date: 2024-01-01

Creator: Nur Schettino

Access: Open access

Cosmic rays have been detected for over a century. While some sources have been confirmed, they cannot explain the high energy of the particles (> 10^15 eV), so it remains unclear where and how they are accelerated to extreme energies. The study of astrophysical high-energy neutrinos may help solve the puzzle. These neutrinos are produced by cosmic rays interacting with other charged particles or photons. Moreover, while cosmic rays do not reveal their sources of origin because they can be deflected by magnetic fields, cosmic neutrinos detected by the IceCube Observatory can be traced back to their sources of origin. We will consider an active galactic nucleus (AGN) as a candidate source for a high-energy neutrino.This thesis examines the AGN WISEA J175051.31+105645.3 as a potential source for IceCube-220303A, a high-energy neutrino with a 78% probability of being astrophysical in origin. Using follow-up NuSTAR and Swift/XRT observations, WISEA J175051.31+105645.3 was the only viable source we found in IceCube-220303A’s uncertainty region. We used follow-up X-ray data to construct a multi-wavelength spectral energy distribution (SED) through which we calculated the AGN’s neutrino energy flux. This calculation yields the number of neutrinos we would expect to detect from the AGN in a given time period. We used this number to calculate the probability that IceCube-220303A was emitted by WISEA J175051.31+105645.3. Finding a statistically significant link between IceCube-220303A and WISEA J175051.31+105645.3 may help us better understand what processes can accelerate particles like cosmic rays to extreme energies and learn more about AGN.