Moto-mobilities: geographies of the motorcycle and motorcyclists’

This paper draws upon and seeks to extend accounts of systems of automobility through an examination of geographies of the motorcycle and motorcyclist – or what we term ‘moto-mobilities’. We utilize the figure of the motorcycle to raise the importance of analysing alternative mobilities: to consider how they appeal to different travelling dispositions and emotions; how they have been represented; and how they have been produced, marketed and consumed. The paper first reflects upon the experiences and embodiment of the motorcycle-rider; second, evaluates representations of moto-mobility; and finally attends to the materiality of mobility via an examination of the economy of motorcycle qualities

A candidate gamma-ray pulsar in the supernova remnant CTA 1

We present a detailed analysis of the high energy gamma-ray source 2EG J0008+7307. The source has a steady flux and a hard spectrum, softening above 2 GeV. The properties of the gamma-ray source are suggestive of emission from a young pulsar in the spatially coincident CTA 1 supernova remnant, which has recently been found to have a non-thermal X-ray plerion. Our 95% uncertainty contour around the >1 GeV source position includes the point-like X-ray source at the centre of the plerion. We propose that this object is a young pulsar and is the most likely counterpart of 2EG J0008+7307.Comment: Accepted for publication in MNRAS. 6 pages including four PS figures. Uses mn.te

The GeV-TeV Connection in Galactic gamma-ray sources

Recent observations with atmospheric Cherenkov telescope systems such as H.E.S.S. and MAGIC have revealed a large number of new sources of very-high-energy (VHE) gamma-rays from 100 GeV - 100 TeV, mostly concentrated along the Galactic plane. At lower energies (100 MeV - 10 GeV) the satellite-based instrument EGRET revealed a population of sources clustering along the Galactic Plane. Given their adjacent energy bands a systematic correlation study between the two source catalogues seems appropriate. Here, the populations of Galactic sources in both energy domains are characterised on observational as well as on phenomenological grounds. Surprisingly few common sources are found in terms of positional coincidence and spectral consistency. These common sources and their potential counterparts and emission mechanisms will be discussed in detail. In cases of detection only in one energy band, for the first time consistent upper limits in the other energy band have been derived. The EGRET upper limits are rather unconstraining due to the sensitivity mismatch to current VHE instruments. The VHE upper limits put strong constraints on simple power-law extrapolation of several of the EGRET spectra and thus strongly suggest cutoffs in the unexplored energy range from 10 GeV - 100 GeV. Physical reasons for the existence of cutoffs and for differences in the source population at GeV and TeV energies will be discussed. Finally, predictions will be derived for common GeV - TeV sources for the upcoming GLAST mission bridging for the first time the energy gap between current GeV and TeV instruments.Comment: (1) Kavli Institute for Particle Astrophysics and Cosmology (KIPAC), Stanford, USA (2) Stanford University, W.W. Hansen Experimental Physics Lab (HEPL) and KIPAC, Stanford, USA (3) ICREA & Institut de Ciencies de l'Espai (IEEC-CSIC) Campus UAB, Fac. de Ciencies, Barcelona, Spain. (4) School of Physics and Astronomy, University of Leeds, UK. Paper Submitted to Ap

Narrative of the wild: An autoethnographic exploration of protected areas within the United States of America

As conditions for the global environment continue to degrade and the climate crisis deepens, wilderness and protected areas (PAs) serve as a bulwark for sustainability goals. As much of the protections and strengths of PAs stem from the public’s opinion of them, this research seeks to further understand the communicative underpinnings of PAs. Utilizing autoethnography and applying it to a rhetorical framework, this study explores the constitutive qualities narrative in conjunction with the wilderness can possess. The results offer suggestions for future communication scholars and advocates to employ while discussing and communicating about the wilderness