1,720,989 research outputs found
A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy: Nested Samples for Millisecond Pulsar Parameter Estimation
No full textPosterior sample files associated with the preprint "A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio-Timing and XMM-Newton Spectroscopy" by Riley et al. (2021; arXiv:2105.06980 [astro-ph.HE]; submitted to ApJL).
Also included are: the data products; the numeric model files including the telescope calibration products; model modules in the Python language using the X-PSI framework; and Jupyter analysis notebooks.
Please refer to the README for detailed information
Implications of the search for optical counterparts during the first six months of the Advanced LIGO's and Advanced Virgo's third observing run: possible limits on the ejecta mass and binary properties
No full textGW170817 showed that neutron star mergers not only emit gravitational waves but also can release electromagnetic signatures in multiple wavelengths. Within the first half of the third observing run of the Advanced LIGO and Virgo detectors, there have been a number of gravitational wave candidates of compact binary systems for which at least one component is potentially a neutron star. In this article, we look at the candidates S190425z, S190426c, S190510g, S190901ap, and S190910h, predicted to have potentially a non-zero remnant mass, in more detail. All these triggers have been followed up with extensive campaigns by the astronomical community doing electromagnetic searches for their optical counterparts; however, according to the released classification, there is a high probability that some of these events might not be of extraterrestrial origin. Assuming that the triggers are caused by a compact binary coalescence and that the individual source locations have been covered during the EM follow-up campaigns, we employ three different kilonova models and apply them to derive possible constraints on the matter ejection consistent with the publicly available gravitational-wave trigger information and the lack of a kilonova detection. These upper bounds on the ejecta mass can be related to limits on the maximum mass of the binary neutron star candidate S190425z and to constraints on the mass-ratio, spin, and NS compactness for the potential black hole-neutron star candidate S190426c. Our results show that deeper electromagnetic observations for future gravitational wave events near the horizon limit of the advanced detectors are essential
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
A NICER View of PSR J0030+0451: Nested Samples for Millisecond Pulsar Parameter Estimation
No full textPosterior sample files and scripts associated with:
Riley et al. 2019, ApJL, 887, L21 (DOI: 10.3847/2041-8213/ab481c)
"A NICER view of PSR J0030+0451: millisecond pulsar parameter estimation"
Refer to the README for detailed information.</p
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
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
De overnamestrijd rond ABN AMRO door Theo Raaijmakers bezien
No full textMeer dan 40 jaar zijn met grote regelmaat beschouwingen van Prof. mr. M.J.C.G. (Theo) Raaijmakers verschenen op het gebied van het ondernemings- en effectenrecht. Zowel als boeken, oraties, bijdragen in juridische tijdschriften, preadviezen, en feest- en vriendenbundels, als ook meer dan 30 jaar in de vorm van annotaties in Ars Aequi.Zijn geschriften getuigen van een diepgaande kennis en doorwrochte, vaak vernieuwende visie op deze rechtsgebieden en hun onderlinge samenhang, waarin ook zijn brede ervaring binnen het internationale bedrijfsleven sterk tot uitdrukking komt.Onlangs heeft Theo Raaijmakers zijn laatste annotatie in Ars Aequi geschreven. Ter gelegenheid daarvan is in deze bundel een aantal eerder verschenen bijdragen van Theo Raaijmakers opgenomen, steeds voorzien van een korte reflectie van de hand van één van zijn promoti, naaste collegae of andere met hem verbonden vakgenoten.De hierin opgenomen bijdragen zullen – hoewel van eerdere datum – de juridische lezer bepaald kennis en inzicht in de desbetreffende materie verschaffen
De overnamestrijd rond ABN AMRO door Theo Raaijmakers bezien
No full textMeer dan 40 jaar zijn met grote regelmaat beschouwingen van Prof. mr. M.J.C.G. (Theo) Raaijmakers verschenen op het gebied van het ondernemings- en effectenrecht. Zowel als boeken, oraties, bijdragen in juridische tijdschriften, preadviezen, en feest- en vriendenbundels, als ook meer dan 30 jaar in de vorm van annotaties in Ars Aequi.Zijn geschriften getuigen van een diepgaande kennis en doorwrochte, vaak vernieuwende visie op deze rechtsgebieden en hun onderlinge samenhang, waarin ook zijn brede ervaring binnen het internationale bedrijfsleven sterk tot uitdrukking komt.Onlangs heeft Theo Raaijmakers zijn laatste annotatie in Ars Aequi geschreven. Ter gelegenheid daarvan is in deze bundel een aantal eerder verschenen bijdragen van Theo Raaijmakers opgenomen, steeds voorzien van een korte reflectie van de hand van één van zijn promoti, naaste collegae of andere met hem verbonden vakgenoten.De hierin opgenomen bijdragen zullen – hoewel van eerdere datum – de juridische lezer bepaald kennis en inzicht in de desbetreffende materie verschaffen
Een reflectie naar aanleiding van: "Omzetting van een personenvennootschap in een NV of BV of omgekeerd"
No full text- …
