Event-horizon-scale structure in the supermassive black hole candidate at the Galactic Centre
- S. Doeleman, J. Weintroub, D. Woody
- PhysicsNature
- 4 September 2008
Observations at a wavelength of 1.3 mm set a size of microarcseconds on the intrinsic diameter of Sagittarius A*, suggesting that the bulk of Sgr A* emission may not be centred on the black hole, but arises in the surrounding accretion flow.
First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
- K. Akiyama, A. Alberdi, L. Ziurys
- PhysicsAstrophysical Journal
- 10 April 2019
When surrounded by a transparent emission region, black holes are expected to reveal a dark shadow caused by gravitational light bending and photon capture at the event horizon. To image and study…
A fast radio burst localized to a massive galaxy
Use of a specially built radio interferometer shows that a non-repeating fast radio burst is localized to a few-arcsecond region containing a single massive galaxy, and is perhaps derived from an old stellar population.
1.3 mm WAVELENGTH VLBI OF SAGITTARIUS A*: DETECTION OF TIME-VARIABLE EMISSION ON EVENT HORIZON SCALES
- V. Fish, S. Doeleman, L. Ziurys
- Physics
- 10 November 2010
Sagittarius A*, the ∼4 × 106 M☉ black hole candidate at the Galactic center, can be studied on Schwarzschild radius scales with (sub)millimeter wavelength very long baseline interferometry (VLBI). We…
DYNAMICALLY DRIVEN EVOLUTION OF THE INTERSTELLAR MEDIUM IN M51
- J. Koda, N. Scoville, D. Woody
- Physics
- 9 July 2009
Massive star formation occurs in giant molecular clouds (GMCs); an understanding of the evolution of GMCs is a prerequisite to develop theories of star formation and galaxy evolution. We report the…
THE OWENS VALLEY MILLIMETER ARRAY
- S. Padin, S. Scott, R. P. Lawrence
- Physics
- 1 May 1991
The telescopes and signal processing systems of the Owens Valley Millimeter Array are considered, and improvements in the sensitivity and stability of the instrument are characterized. The instrument…
APPLICATION OF A SELF-SIMILAR PRESSURE PROFILE TO SUNYAEV–ZEL'DOVICH EFFECT DATA FROM GALAXY CLUSTERS
- T. Mroczkowski, M. Bonamente, D. Woody
- Physics
- 29 September 2008
We investigate the utility of a new, self-similar pressure profile for fitting Sunyaev–Zel'dovich (SZ) effect observations of galaxy clusters. Current SZ imaging instruments–such as the…
TRACING THE BIPOLAR OUTFLOW FROM ORION SOURCE I
- R. Plambeck, M. Wright, S. L. Scott
- Physics
- 16 September 2009
Using CARMA, we imaged the 87 GHz SiO v = 0 J = 2–1 line toward Orion-KL with 0.″45 angular resolution. The maps indicate that radio source I drives a bipolar outflow into the surrounding molecular…
First results from CARMA: the combined array for research in millimeter-wave astronomy
- D. Bock, A. Bolatto, M. Wright
- PhysicsSPIE Astronomical Telescopes + Instrumentation
- 14 June 2006
The Combined Array for Research in Millimeter-wave Astronomy (CARMA) comprises the millimeter-wave antennas of the Owens Valley Radio Observatory (OVRO), the Berkeley-Illinois-Maryland Association…
A λ = 1.3 Millimeter Aperture Synthesis Molecular Line Survey of Orion Kleinmann-Low
We present a 1.″3 spatial resolution interferometric spectral line survey of the core of the Orion molecular cloud, obtained with the OVRO millimeter array. Covering 4 GHz bandwidth in total, the…
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