Are the INTEGRAL Intermediate Polars Different?

One of the biggest surprises of the INTEGRAL mission was the detection of large numbers of magnetic cataclysmic variables – in particular the intermediate polar (IP) subclass. Not only have many previously known systems been detected, but many new ones have also been found and subsequently classified from optical follow-up observations, increasing the sample of IPs by ! 15%. We have recently been using a particle hydrodynamic code to investigate the accretion flows of IPs and determine the equilibrium spin-rates and accretion flow patterns across a wide range of orbital periods, mass ratios and magnetic field strengths. We use the results of these accretion flow simulations to examine whether the INTEGRAL IPs differ from the overall population and conclude that they do not. Most IPs are likely to be INTEGRAL sources, given sufficient exposure. Currently however, none of the 'EX Hya-like' IPs, with large spin-to-orbital period ratios and short orbital periods, are detected by INTEGRAL. If this continues to be the case once the whole sky has a comparable INTEGRAL exposure, it may indicate that the ring-like mode of accretion which we demonstrate occurs in these systems is responsible for their different appearance

Perspectives in Global Helioseismology, and the Road Ahead

We review the impact of global helioseismology on key questions concerning the internal structure and dynamics of the Sun, and consider the exciting challenges the field faces as it enters a fourth decade of science exploitation. We do so with an eye on the past, looking at the perspectives global helioseismology offered in its earlier phases, in particular the mid-to-late 1970s and the 1980s. We look at how modern, higher-quality, longer datasets coupled with new developments in analysis, have altered, refined, and changed some of those perspectives, and opened others that were not previously available for study. We finish by discussing outstanding challenges and questions for the field.Comment: Invited review; to appear in Solar Physics (24 pages, 6 figures

"Focused Introspection" During Naturally Increased Diuresis: Description and Repeatability of a Method to Study Bladder Sensation Non-Invasively

Objective To present and describe a non-invasive method to study the origin and development of bladder filling sensation and to evaluate the repeatability of the method. Method Eighteen volunteers participated in the study and were given a water loading protocol consisting of 1,000ml water intake 1hr before the session and 200ml every 10min during the session. Protocol 1: To evaluate diuresis rate, seven participants were asked to void every 15min and the voided volume was measured. Protocol 2: Eleven volunteers graded bladder sensation on regular time points, on an empty graph with time on the X-axis and intensity of sensation on the Y-axis. The protocol ended at absolute need to void (maximal intensity) and voided volumes were measured. This protocol was conducted three times with a 10 days interval. Results Protocol 1: The diuresis rate was not different during the sessions and showed no variation over the studied time period (P=0.2). Protocol 2: For an individual, the diuresis rate was not different between the sessions. The curves in all patients showed a continuously increasing bladder intensity. In seven participants the curve was convex, in the other four, the curve was sigmoidal. For each individual the pattern was constant during the three sessions. Conclusion A strict water loading protocol induces a constant diuresis. This allows individuals to draw an introspection bladder sensation curve with a specific shape, which can be used as a method to study the development of bladder sensation non-invasively. Neurourol. Urodynam. 33:502-506, 2014. (c) 2013 Wiley Periodicals, Inc

SDSS-V local volume mapper instrument: Overview and status

The Sloan Digital Sky Survey V (SDSS-V) is an all-sky spectroscopic survey of >6 million objects, designed to decode the history of the Milky Way, reveal the inner workings of stars, investigate the origin of solar systems, and track the growth of supermassive black holes across the Universe. The Local Volume Mapper (LVM) is a facility designed to provide a contiguous 2,500 deg2 integral-field survey over a 3.5 year period from Las Campanas Observatory in Chile. In this paper we provide an overview and status update for the LVM instrument (hereafter LVM-I). Each integral-field unit's spaxel probes linear scales that are sub-parsec (Milky Way) to ∼10 pc (Magellanic Clouds) which is accomplished with an angular diameter of 36.9". LVM's spectral resolution is R = λ/∆λ ∼ 4, 000 which probes velocities of 33 kms-1 (1 σ) from 365 nm to 950 nm. LVM uses four 16-cm telescopes feeding three spectrographs. One telescope carries the bulk of the science load with ∼1,800 fibers coupled to the field via a pair of lenslet arrays, two telescopes are used to measure the night sky spectra in fields that flank the science field, and a fourth telescope contemporaneously monitors bright standard stars to determine atmospheric extinction. We expect LVM-I to deliver percent-level precision on important line ratios down to a few Rayleigh. The three spectrographs are being built by Winlight corporation in France based on those for the Dark Energy Spectroscopic Instrument (DESI). In this paper we present the high-level system design of LVM-I including the lenslet-coupled fiber IFUs, telescopes, guiding+acquisition system, calibration systems, enclosures, and spectrographs. © 2020 SPIEImmediate accessThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at [email protected]

TRAJECTORIES OF REGIONS AND SPATIAL INTEGRATION IN THE WORLD-SYSTEM

In this paper, we reconstruct the trajectories of the southern Low Countries as part of the world-system and of the Campine, initially as part of the Duchy of Brabant (itself part of a small world-economy), and later as part of the southern Low Countries, on the basis of a hypothesis that spatial integration/fragmentation involves the upgrading/downgrading of the status of a region in the world-economy. Spatial integration is conceived of as a process of transformation that (re)produces a coherent pattern of functional shapes. However, the degree of coherence is not necessarily measured by the volume of horizontal relations between the integrated areas. Moreover, a distinction should be made between the factors of transformation that (re)produce the pattern and other factors that produce a configuration that happens to coincide with that pattern. Finally, the world-economy should be considered as an autopoietic system, functioning in the manner of a transformation matrix. Copyright (c) 2005 by the Royal Dutch Geographical Society KNAG.