62 research outputs found
Danscross: dancing in a shaking world. The Danscross papers, Beijing 2009
This collaborative, six month project was co-directed by Christopher Bannerman, Head of ResCen Research Centre and Xu Rui, Associate Professor and Vice-Chair, Department of Dance Studies at the Beijing Dance Academy (BDA). It focused on the creation of eight dance works by western and Chinese choreographers which were created to a specific brief, testing Stravinsky's proposition that the imposition of rules sets the artist free. The creative processes were observed by teams of academics from the BDA; the China National Academy for Arts Research; University of California at Los Angeles, Center for World Arts and Cultures; University College Falmouth, Dartington College; Hong Kong Academy for Performing Arts; National University of Singapore; International Institute for Education and Research in Theatre and Film Arts, Waseda University; University of Washington. The researchers contributed to an online record of the project as well as presenting papers at the subsequent conference and for publication. The project's premise was that the empathetic, catalytic space of creative practice offers a unique way of encountering and understanding the other.
The examination by international and Chinese academics of the creative strategies of UK and Chinese choreographers, each working with dancers trained in Classical Chinese Dance and/or Asian Folk Dance, provided a metaphor for other acts of translation and adaption. While key challenges today (the pervasiveness of climate change, financial instability and viral infections), are unconfined by national boundaries, the research premise tested the hypothesis that by examining the particular, the panoramic becomes open to speculative enquiry
Observation of the TeV gamma-ray source MGRO J1908+06 with ARGO-YBJ
The extended gamma ray source MGRO J1908+06, discovered by the Milagro air
shower detector in 2007, has been observed for about 4 years by the ARGO-YBJ
experiment at TeV energies, with a statistical significance of 6.2 standard
deviations. The peak of the signal is found at a position consistent with the
pulsar PSR J1907+0602. Parametrizing the source shape with a two-dimensional
Gauss function we estimate an extension \sigma = 0.49 \pm 0.22 degrees,
consistent with a previous measurement by the Cherenkov Array H.E.S.S.. The
observed energy spectrum is dN/dE = 6.1 \pm 1.4 \times 10^-13 (E/4 TeV)^{-2.54
\pm 0.36} photons cm^-2 s^-1 TeV^-1, in the energy range 1-20 TeV. The measured
gamma ray flux is consistent with the results of the Milagro detector, but is
2-3 times larger than the flux previously derived by H.E.S.S. at energies of a
few TeV. The continuity of the Milagro and ARGO-YBJ observations and the stable
excess rate observed by ARGO-YBJ along 4 years of data taking support the
identification of MGRO J1908+06 as the steady powerful TeV pulsar wind nebula
of PSR J1907+0602, with an integrated luminosity above 1 TeV about 1.8 times
the Crab Nebula luminosity.Comment: 6 pages, accepted for pubblication by ApJ. Replaced to correct the
author lis
Long-term Monitoring on Mrk 501 for Its VHE gamma Emission and a Flare in October 2011
As one of the brightest active blazars in both X-ray and very high energy
-ray bands, Mrk 501 is very useful for physics associated with jets
from AGNs. The ARGO-YBJ experiment is monitoring it for -rays above 0.3
TeV since November 2007. Starting from October 2011 the largest flare since
2005 is observed, which lasts to about April 2012. In this paper, a detailed
analysis is reported. During the brightest -rays flaring episodes from
October 17 to November 22, 2011, an excess of the event rate over 6 is
detected by ARGO-YBJ in the direction of Mrk 501, corresponding to an increase
of the -ray flux above 1 TeV by a factor of 6.62.2 from its steady
emission. In particular, the -ray flux above 8 TeV is detected with a
significance better than 4 . Based on time-dependent synchrotron
self-Compton (SSC) processes, the broad-band energy spectrum is interpreted as
the emission from an electron energy distribution parameterized with a single
power-law function with an exponential cutoff at its high energy end. The
average spectral energy distribution for the steady emission is well described
by this simple one-zone SSC model. However, the detection of -rays
above 8 TeV during the flare challenges this model due to the hardness of the
spectra. Correlations between X-rays and -rays are also investigated.Comment: have been accepted for publication at Ap
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