1,723,835 research outputs found
A state change in the low-mass X-ray binary XSS J12270-4859
No full textMillisecond radio pulsars acquire their rapid rotation rates through mass and angular momentum transfer in a low-mass X-ray binary system. Recent studies of PSR J1824-2452I and PSR J1023+0038 have observationally demonstrated this link, and they have also shown that such systems can repeatedly transition back-and-forth between the radio millisecond pulsar and low-mass X-ray binary states. This also suggests that a fraction of such systems are not newly born radio millisecond pulsars but are rather suspended in a back-and-forth, stateswitching phase, perhaps for gigayears. XSS J12270-4859 has been previously suggested to be a low-mass X-ray binary, and until recently the only such system to be seen at MeV-GeV energies. We present radio, optical and X-ray observations that offer compelling evidence that XSS J12270-4859 is a low-mass X-ray binary which transitioned to a radiomillisecond pulsar state between 2012 November 14 and December 21. We use optical and X-ray photometry/spectroscopy to show that the system has undergone a sudden dimming and nolonger shows evidence for an accretion disc. The optical observations constrain the orbital period to 6.913±0.002 h
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[4859 Chicago Column, 1979]
No full textPhotograph of two paneled houses, the one on the right with the number "4859" displayed on it diagonally with metal characters. The house on the left has a small front porch, fenced in and held up with an ionic column. [1979, Chicago, IL
L'inscription généalogique de Cyrène (SGDI 4859)
No full textMasson Olivier. L'inscription généalogique de Cyrène (SGDI 4859). In: Bulletin de correspondance hellénique. Volume 98, livraison 1, 1974. pp. 263-270
[4859 Chicago Column, 1979]
No full textPhotograph of two paneled houses, the one on the right with the number "4859" displayed on it diagonally with metal characters. The house on the left has a small front porch, fenced in and held up with an ionic column. [1979, Chicago, IL
Block Card 4859 Thobe Road
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: attached garage | Ranch houses | 4859 Thobe Road (Toledo, Ohio) | Dwelling | Edgewood Addition (Toledo, Ohio) | Reynolds Corners Area (Toledo, Ohio
Morbidity patterns of older people by age group (n = 4859).
No full textMorbidity patterns of older people by age group (n = 4859).</p
Linked collectors and determiners for: New York State Museum Arthropod Collection.
No full textNatural history specimen data linked to collectors and determiners held within, "New York State Museum Arthropod Collection". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/e7fa4cc1-52a1-4859-b876-bcb45e9ca809">https://bionomia.net/dataset/e7fa4cc1-52a1-4859-b876-bcb45e9ca809</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/e7fa4cc1-52a1-4859-b876-bcb45e9ca809">https://gbif.org/dataset/e7fa4cc1-52a1-4859-b876-bcb45e9ca809</a>. Formatted as a Frictionless Data package
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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