Paper II: Calibration of the Swift ultraviolet/optical telescope

The Ultraviolet/Optical Telescope (UVOT) is one of three instruments onboard the Swift observatory. The photometric calibration has been published, and this paper follows up with details on other aspects of the calibration including a measurement of the point spread function with an assessment of the orbital variation and the effect on photometry. A correction for large scale variations in sensitivity over the field of view is described, as well as a model of the coincidence loss which is used to assess the coincidence correction in extended regions. We have provided a correction for the detector distortion and measured the resulting internal astrometric accuracy of the UVOT, also giving the absolute accuracy with respect to the International Celestial Reference System. We have compiled statistics on the background count rates, and discuss the sources of the background, including instrumental scattered light. In each case we describe any impact on UVOT measurements, whether any correction is applied in the standard pipeline data processing or whether further steps are recommended.Comment: Accepted for publication in MNRAS. 15 pages, 21 figures, 4 table

Photometric Calibration of the Swift Ultraviolet/Optical Telescope

We present the photometric calibration of the Swift UltraViolet/Optical Telescope (UVOT) which includes: optimum photometric and background apertures, effective area curves, colour transformations, conversion factors for count rates to flux, and the photometric zero points (which are accurate to better than 4 per cent) for each of the seven UVOT broadband filters. The calibration was performed with observations of standard stars and standard star fields that represent a wide range of spectral star types. The calibration results include the position dependent uniformity, and instrument response over the 1600-8000A operational range. Because the UVOT is a photon counting instrument, we also discuss the effect of coincidence loss on the calibration results. We provide practical guidelines for using the calibration in UVOT data analysis. The results presented here supersede previous calibration results.Comment: Minor improvements after referees report. Accepted for publication in MNRA

Destructive arthritis in a patient with chikungunya virus infection with persistent specific IgM antibodies

<p>Abstract</p> <p>Background</p> <p>Chikungunya fever is an emerging arboviral disease characterized by an algo-eruptive syndrome, inflammatory polyarthralgias, or tenosynovitis that can last for months to years. Up to now, the pathophysiology of the chronic stage is poorly understood.</p> <p>Case presentation</p> <p>We report the first case of CHIKV infection with chronic associated rheumatism in a patient who developed progressive erosive arthritis with expression of inflammatory mediators and persistence of specific IgM antibodies over 24 months following infection.</p> <p>Conclusions</p> <p>Understanding the specific features of chikungunya virus as well as how the virus interacts with its host are essential for the prevention, treatment or cure of chikungunya disease.</p

Homeostatic proliferation generates long-lived natural killer cells that respond against viral infection

Like memory T cells, natural killer cells that undergo homeostatic expansion in mice self-renew and retain the ability to respond to subsequent viral infection

Search for supersymmetry with multiple charged leptons in proton-proton collisions at sqrt(s) = 13 TeV

Results are reported from a search for physics beyond-the-standard-model, such as supersymmetry, in final states with at least three charged leptons, in any combination of electrons or muons. The data sample corresponds to an integrated luminosity of 2.3 inverse femtobarns of proton-proton collisions at sqrt(s) = 13 TeV, recorded by the CMS experiment at the LHC in 2015. Two jets are required in each event, providing good sensitivity to strong production of gluinos and squarks. The search regions, sensitive to a range of different supersymmetry scenarios, are defined using the number of jets tagged as originating from bottom quarks, the sum of the magnitudes of the transverse momenta of the jets, the imbalance in the overall transverse momentum in the event, and the invariant mass of opposite-sign, same-flavor lepton pairs. The event yields observed in data are consistent with the expected background contributions from standard model processes. These results are used to derive limits in terms of R-parity conserving simplified models of supersymmetry that describe strong production of gluinos and squarks. Model-independent limits are presented to facilitate the reinterpretation of the results in a broad range of scenarios for physics beyond the standard model

Oral history interview transcript with Stetson Kennedy, June 19, 2006

1 electronic record(s) and derivatives. 0 audio file(s) (wav, mp3) 0 bytes. 00:00:00. 6 PDF documents (9 scans, jp2). 3 digital photographs. Bag approx. 121 MB (127,888,066 bytes).No audio file available, includes partial transcript. Oral history interview with Stetson Kennedy, June 19, 2006. St. Johns County (Fla.). Fieldworker: Laurie Sommers. No audio cassette or file. Part of the South Georgia Folklife Project at Valdosta State University Archives and Special Collections. Partial detailed index of interview with Stetson Kennedy at his home in Florida about the background to his turpentine interviews during the WPA and in the early 1950's for the UN regarding forced labo

Employees of WPA Florida Writers Project ; What the W.P.A. did for me What the W.P.A. did for me

The first work is a compilation of names by Stetson Kennedy, who was director of folklore, life history, and social-ethnic stuides for the Federal Writers\u27 Project in Florida. It is 11 pages. The first page is typed, the others are handwritten. The second work is Euline Jordon\u27s account of her employment by the WPA in Pensacola, Fla. She learned to operate a loom and taught weaving classes. it consists of 5 pages. Employees of WPA Florida Writers Project / compiled by Stetson Kennedy -- What the W.P.A. did for me / by Euline Jordon.https://digitalcommons.usf.edu/tampa_wpa/1005/thumbnail.jp

Employees of WPA Florida Writers Project ; What the W.P.A. did for me What the W.P.A. did for me

The first work is a compilation of names by Stetson Kennedy, who was director of folklore, life history, and social-ethnic stuides for the Federal Writers\u27 Project in Florida. It is 11 pages. The first page is typed, the others are handwritten. The second work is Euline Jordon\u27s account of her employment by the WPA in Pensacola, Fla. She learned to operate a loom and taught weaving classes. it consists of 5 pages.https://digitalcommons.usf.edu/tampa_wpa/1005/thumbnail.jp