88 research outputs found
CURRENT AND FUTURE PROSPECTS, AS WELL AS CHALLENGES FOR ALMA MOLECULAR LINE STUDIES
In this talk I will cover three topics. First, I will present some
recent highlights from ALMA related to astrochemistry. Second, I will
describe some of the challenges inherent in analyzing ALMA
spectroscopic data, using as an illustrative template observations of
NGC6334I - a cluster of forming massive protostars. Finally, I will
give an overview of approved and future ALMA development projects that
promise to open new windows for molecular spectroscopic study with
ALMA
Synergy of multifrequency studies from observations of NGC6334I
We combine multifrequency observations from the millimeter to near infrared
wavelengths that demonstrate the spatial distributions of H2, CO, and NH3
emission, which are all manifestations of various shocks driven by outflows of
deeply embedded sources in NGC6334I. In addition to the well-known
northeast-southwest outflow we detect at least one more outflow in the region
by combining observations from APEX, ATCA, SMA, Spitzer and VLT/ISAAC.
Potential driving sources will be discussed. NGC6334I exhibits several signs of
active star formation and will be a major target for future observatories such
as Herschel and ALMA.Comment: 6 pages, 6 figures, appeared in the proceedings of the workshop 'The
Universe Under The Microscope - Astrophysics At High Angular Resolution', see
http://www.iop.org/EJ/toc/1742-6596/131/
Pulsar Wind Nebulae in EGRET Error Boxes
A remarkable number of pulsar wind nebulae (PWN) are coincident with EGRET
gamma-ray sources. X-ray and radio imaging studies of unidentified EGRET
sources have resulted in the discovery of at least 6 new pulsar wind nebulae
(PWN). Stationary PWN (SPWN) appear to be associated with steady EGRET sources
with hard spectra, typical for gamma-ray pulsars. Their toroidal morphologies
can help determine the geometry of the pulsar which is useful for constraining
models of pulsed gamma-ray emission. Rapidly moving PWN (RPWN) with more
cometary morphologies seem to be associated with variable EGRET sources in
regions where the ambient medium is dense compared to what is typical for the
ISM.Comment: 8 pages, 5 figures, to appear in the proceedings of "The
Multiwavelength Approach to Unidentified Sources", ed. G. Romero & K.S. Chen
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