1,678,087 research outputs found
Interaction Between Supernova Remnant G22.7-0.2 And The Ambient Molecular Clouds
We have carried out 12CO (J=1-0 and 2-1), 13CO (J=1-0), and C18O (J=1-0)
observations in the direction of the supernova remnant (SNR) G22.7-0.2. A
filamentary molecular gas structure, which is likely part of a larger molecular
complex with VLSR~75-79 km/s, is detected and is found to surround the southern
boundary of the remnant. In particular, the high-velocity wing (77-110 km/s) in
the 12CO (J=1-0 and J=2-1) emission shows convincing evidence of the
interaction between SNR G22.7-0.2 and the 75-79 km/s molecular clouds (MCs).
Spectra with redshifted profiles, a signature of shocked molecular gas, are
seen in the southeastern boundary of the remnant. The association between the
remnant and the 77 km/s MCs places the remnant at the near distance of 4.0-4.8
kpc, which agrees with a location on the Scutum-Crux arm. We suggest that SNR
G22.7-0.2, SNR W41, and HII region G022.760-0.485 are at the same distance and
are associated with GMC G23.0-0.4.Comment: 9 pages, 9 figures, 3 tables, accepted for publication in Ap
Sequences of Einstein-Yang-Mills-Dilaton Black Holes
Einstein-Yang-Mills-dilaton theory possesses sequences of neutral static
spherically symmetric black hole solutions. The solutions depend on the dilaton
coupling constant and on the horizon. The SU(2) solutions are labelled
by the number of nodes of the single gauge field function, whereas the
SO(3) solutions are labelled by the nodes of both gauge field
functions. The SO(3) solutions form sequences characterized by the node
structure , where is fixed. The sequences of magnetically neutral
solutions tend to magnetically charged limiting solutions. For finite the
SO(3) sequences tend to magnetically charged Einstein-Yang-Mills-dilaton
solutions with nodes and charge . For and the SO(3) sequences tend to Einstein-Maxwell-dilaton solutions with
magnetic charges and , respectively. The latter also
represent the scaled limiting solutions of the SU(2) sequence. The convergence
of the global properties of the black hole solutions, such as mass, dilaton
charge and Hawking temperature, is exponential. The degree of convergence of
the matter and metric functions of the black hole solutions is related to the
relative location of the horizon to the nodes of the corresponding regular
solutions.Comment: 71 pages, Latex2e, 29 ps-figures include
N=4 Supersymmetric Yang-Mills Multiplet in Non-Adjoint Representations
We formulate a theory for N=4 supersymmetric Yang-Mills multiplet in a
non-adjoint representation R of SO(N) as an important application of our
recently-proposed model for N=1 supersymmetry. This system is obtained by
dimensional reduction from an N=1 supersymmetric Yang-Mills multiplet in
non-adjoint representation in ten dimensions. The consistency with
supersymmetry requires that the non-adjoint representation R with the indices
i, j, ... satisfy the three conditions \eta^{i j} = \delta^{i j}, (T^I)^{i j} =
- (T^I)^{j i} and (T^I)^{[ i j |} (T^I)^{| k ] l} = 0 for the metric \eta^{i j}
and the generators T^I, which are the same as the N=1 case.Comment: 6 pages, no figures, accepted for publication in Phys. Rev.
On the Spectrum of Lattice Massive SU(2) Yang-Mills
On the basis of extended simulations we provide some results concerning the
spectrum of Massive SU(2) Yang-Mills on the lattice. We study the "time"
correlator of local gauge invariant operators integrated over the remaining
three dimensions. The energy gaps are measured in the isospin I=0,1 and
internal spin J=0,1 channels. No correlation is found in the I=1,J=0 channel.
In the I=1, J=1 channel and far from the critical mass value the energy
gap roughly follows the bare value (vector mesons). In approaching the
critical value at fixed, there is a bifurcation of the energy
gap: one branch follows the value , while the new is much larger and it
shows a more and more dominant weight. This phenomenon might be the sign of two
important features: the long range correlation near the fixed point at implied by the low energy gap and the screening (or confining)
mechanisms across the associated to the larger gap. The I=0, J=0,1 gaps
are of the same order of magnitude, typically larger than the I=1, J=1 gap (for
). For both I=0 gaps have a dramatic drop with minima near
the value . This behavior might correspond to the formation of I=0 bound
states both in the J=0 and J=1 channels
Elliptic flow of J/ at forward rapidity in Pb-Pb collisions at 2.76 TeV with the ALICE experiment
We present the elliptic flow of inclusive J/ measured in the
channel at forward rapidity (), down to zero
transverse momentum, in Pb-Pb collisions at
TeV with the ALICE muon spectrometer. The dependence of
J/ in non-central (20%-60%) Pb-Pb collisions at
TeV is compared with existing measurements at
RHIC and theoretical calculations. The centrality dependence of the
-integrated elliptic flow, as well as the
dependence in several finer centrality classes is presented.Comment: Quark Matter 2012 proceeding
Strings and Super-Yang–Mills theory: the integrable story
Commentary on 'Long-range fraktur gfraktur l(n) integrable spin chains and plane-wave matrix theory' by N Beisert and T Klose, 2006 J. Stat. Mech. P07006
- …