1,301 research outputs found
A New TeV Source in the Vicinity of Cygnus OB2
No full textGavin Rowell and Dieter Horns (for the HEGRA Collaboration)http://icrhp9.icrr.u-tokyo.ac.jp/abstract/Symp2002
Letter from J. E. Gavin to Louis C. Cramton regarding Sale of Bright Angel Trail
No full textLetter from J. E. Gavin to Louis C. Cramton regarding the Bright Angel Trail controversy, including newspaper clipping
Letter from B. F. Gavin (for Carl Hayden) to Stephen Mather, National Park Service
No full textLetter from Mrs. B. F. Gavin to Stephen Mather regarding the sale of Bass properties to the Santa Fe Railroad Company
HEGRA discovery of the first unidentified TeV source
No full textCopyright © 2003 Elsevier B.V. All rights reserved.The first unidentified TeV source in the Cygnus region is confirmed by follow-up observations carried out in 2002 with the HEGRA stereoscopic system of air Cherenkov telescopes. Using the combined ∼279 h of data, this new source TeV J2032+4130, appears to be steady in flux over the four years of data taking, it shows an extension with radius 6.2′, and has a hard spectrum with photon index -1.9 between 1 and 10 TeV. Its location places it at the edge of the core of the extremely dense stellar OB association, Cygnus OB2. Its integral flux above energies E>1 TeV amounts to ∼3% of the Crab nebula flux. No counterpart at radio, optical, nor X-ray energies is as-yet seen, leaving TeV J2032+4130 presently unidentified. Summarized here are observational parameters of this source and brief astrophysical interpretation. © 2003 Elsevier B.V. All rights reserved.Dieter Horns, Gavin Rowell and For the HEGRA Collaboratio
Letter from J. E. Gavin (for Senator Hayden) to Roy W. James, Michael Hanley and H. A. Montgomery
No full textLetter from J. E. Gavin on behalf of Carl Hayden writing in regards to the insurance claims filed with the National Park
Ground-Based Gamma-Ray Detection of High Energy Galactic Sources: An Update
No full textSubmitted to arxiv.org by Gavin Rowell on Tue, 9 Dec 2003I review the present status of ground-based gamma-ray astronomy, concentrating on the population of galactic TeV sources. A number of new telescope systems are now being completed, and promise to yield exciting new discoveries, expanding rapidly the number of sources. The TeV galactic sources today include a number of plerions, shell-type SNR, an X-ray binary, and also one unidentified candidate. Their present status, and our understanding of their TeV gamma-ray emission processes are summarised and some motivation driving development of the field is outlined
A search for very high energy gamma rays from PSR1706-44 using the Atmospheric Cerenkov Imaging Technique / by Gavin Peter Rowell.
No full textIncludes bibliographical references.ix, 159 p. : ill. ; 30 cm.Thesis (Ph.D.)--University of Adelaide, Dept. of Physics and Mathematical Physics, 199
The first statewide, open access dataset tracking public records requests in New Jersey
No full textState freedom of information laws are vital mechanisms for providing public access to government records and supporting civic engagement through the effectuation of a public policy of transparency at the state level within the United States, not unlike their federal counterpart, the Freedom of Information Act (FOIA). New Jersey state law facilitates public access to government records under the Open Public Records Act (OPRA). Codified at N.J.S.A. 47:1A-1 et seq., OPRA applies to state, county and local public authorities but exempts the judicial and legislative branches from its disclosure requirements. Since OPRA took effect in 2002, it has been difficult to track the full extent of law's impact across New Jersey's 21 counties, 565 municipalities, and numerous state agencies, school districts and independent authorities, all of which must individually respond to requests under the law. To the best of the author's knowledge, no official source has compiled detailed metadata tracking the content and disposition of OPRA requests at the state, regional and municipal levels within New Jersey using individual requests, and authorities rarely proactively disclose their responses to requests they receive, necessitating further data collection to support research into the impacts of this law. This article presents the OPRAmachine dataset: data containing detailed metadata on public records requests submitted to state & local public authorities in New Jersey since October 2017 collected through the implementation of information and communication technologies (ICT) to facilitate the freedom of information request process. The data was collected using an open-source web interface that allowed users to submit an OPRA request to public authorities, with responses stored in a database and made available via the internet. After their request received a response, users were asked to answer a single survey question describing the status of their request, with their answer used to classify the request. Descriptive statistics, tables and frequencies were produced for the dataset and are included in this article. These data will assist state policymakers and other interested parties with assessing trends in OPRA requests across multiple types of public authorities & geographic regions. These data can inform more efficient government records management procedures, foster civic engagement by increasing government transparency and can inform the development of possible reforms to the OPRA law by showing trends in requests & responses that can be used to evaluate the law's implementation throughout the state.Peer reviewe
Analysis of the optical-depth-corrected molecular line and diffuse TeV gamma-ray correlation in the Galactic centre
No full textWe explore the correlation of diffuse TeV gamma rays in the Galactic centre with optical-depth-corrected CO(1-0) emission. We present our analysis of the data, in which the 12CO(1-0) molecular line emission is corrected for optical-depth by using the the 13C and 18O isotopes of the CO(1-0) line. Using simple scatter plots, we find no evidence of a correlation with the lower-density tracer. © 2012 American Institute of Physics.David I. Jones, Michael Burton, Paul Jones, Gavin Rowell, and Felix A. Aharonia
The Social Construction of the Child Sex Offender Explored by Narrative
No full textThe notion of "child sex offender" provokes aversion, but it may be that it is a social construction. We suggest that a Dominant narrative, in which child sex offenders are constructed as irredeemable, persists, despite the emergence of assumption challenging Alternative narratives. A story completion method was used to elicit themes of Dominant or Alternative narratives, theory-led thematic analysis was used to identify them. The use and analysis of narrative and free-form stories are well established in social research, but remain a novel concept in the study of offenders. The results support the persistence of the Dominant narrative with two notable exceptions. Conclusions centre on utility of the narrative method to examine offender constructions, and the pervasiveness of Dominant narratives. Key Words: Dominant and Alternative Narrative, Social Construction, Child Sex Offenders, and Thematic Analysi
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