The whirling wheel: the male construction of empowered female identities in Old Norse myth and legend

This thesis examines the body of medieval literature associated with Old Norse myth and legend. Though this is a diffuse corpus produced over a long span of time and from a wide geographical area, it is possible to establish connections between texts and to highlight certain recurring narrative patterns that are deeply entrenched in this literary tradition. The specific focus of the present study is to analyse the narrative patterns that characterise the interactions between male and female figures. It has long been understood that female figures tend to occupy carefully defined social roles in this body of literature, and much work has been done in assessing these. This thesis takes the unique approach of investigating whether these roles can be viewed, not as a product of the mentality of the writers of this literary material, but rather as a product of male characters within the literary narratives themselves. The investigation poses the question of whether men can be seen, through their words, thoughts, and actions, to be responsible for creating female identities. Intimately connected to the concept of identity creation is the idea of power: this thesis will argue that most male attempts to redefine female identity is motivated by a desire to acquire, control, negate, or otherwise alter, the powers possessed by females. Quite often, because fallible males demonstrate an imperfect understanding of female power, there can be a marked disparity between the abilities certain women are thought to possess, and those they actually do. The thesis will examine a large selection of supernatural female figures, across a broad range of literature, ultimately to suggest that the male creation of female power is deeply entrenched in narrative patterns observable in many different contexts

A chemical survey of exoplanets with ARIEL

Thousands of exoplanets have now been discovered with a huge range of masses, sizes and orbits: from rocky Earth-like planets to large gas giants grazing the surface of their host star. However, the essential nature of these exoplanets remains largely mysterious: there is no known, discernible pattern linking the presence, size, or orbital parameters of a planet to the nature of its parent star. We have little idea whether the chemistry of a planet is linked to its formation environment, or whether the type of host star drives the physics and chemistry of the planet’s birth, and evolution. ARIEL was conceived to observe a large number (~1000) of transiting planets for statistical understanding, including gas giants, Neptunes, super-Earths and Earth-size planets around a range of host star types using transit spectroscopy in the 1.25–7.8 μm spectral range and multiple narrow-band photometry in the optical. ARIEL will focus on warm and hot planets to take advantage of their well-mixed atmospheres which should show minimal condensation and sequestration of high-Z materials compared to their colder Solar System siblings. Said warm and hot atmospheres are expected to be more representative of the planetary bulk composition. Observations of these warm/hot exoplanets, and in particular of their elemental composition (especially C, O, N, S, Si), will allow the understanding of the early stages of planetary and atmospheric formation during the nebular phase and the following few million years. ARIEL will thus provide a representative picture of the chemical nature of the exoplanets and relate this directly to the type and chemical environment of the host star. ARIEL is designed as a dedicated survey mission for combined-light spectroscopy, capable of observing a large and well-defined planet sample within its 4-year mission lifetime. Transit, eclipse and phase-curve spectroscopy methods, whereby the signal from the star and planet are differentiated using knowledge of the planetary ephemerides, allow us to measure atmospheric signals from the planet at levels of 10–100 part per million (ppm) relative to the star and, given the bright nature of targets, also allows more sophisticated techniques, such as eclipse mapping, to give a deeper insight into the nature of the atmosphere. These types of observations require a stable payload and satellite platform with broad, instantaneous wavelength coverage to detect many molecular species, probe the thermal structure, identify clouds and monitor the stellar activity. The wavelength range proposed covers all the expected major atmospheric gases from e.g. H2O, CO2, CH4 NH3, HCN, H2S through to the more exotic metallic compounds, such as TiO, VO, and condensed species. Simulations of ARIEL performance in conducting exoplanet surveys have been performed – using conservative estimates of mission performance and a full model of all significant noise sources in the measurement – using a list of potential ARIEL targets that incorporates the latest available exoplanet statistics. The conclusion at the end of the Phase A study, is that ARIEL – in line with the stated mission objectives – will be able to observe about 1000 exoplanets depending on the details of the adopted survey strategy, thus confirming the feasibility of the main science objectives.Peer reviewedFinal Published versio

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