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8 papers · 1 filter
Multiwavelength Observations of the Blazar Mrk 421 in December 2002 and January 2003
P. Rebillot, M. Aller, H. Aller +5
We report on a multiwavelength campaign on the TeV gamma-ray blazar Markarian (Mrk) 421 performed during December 2002 and January 2003. These target of opportunity observations we…
A Mid-Infrared Study of the Class 0 Cluster in LDN 1448
J. C. O'Linger, D. M. Cole, M. E. Ressler +1
We present ground-based mid-infrared observations of Class 0 protostars in LDN 1448. Of the five known protostars in this cloud, we detected two, L1448N:A and L1448C, at 12.5, 17.9…
A Multi-Wavelength Study of Sgr A*: The Role of Near-IR Flares in Production of X-ray, Soft -ray and Sub-millimeter Emission
F. Yusef-Zadeh, H. Bushouse, C. D. Dowell +8
(abridged) We describe highlights of the results of two observing campaigns in 2004 to investigate the correlation of flare activity in Sgr A* in different wavelength regimes, usin…
The Fourth Data Release of the Sloan Digital Sky Survey
J. K. Adelman-McCarthy et al.
This paper describes the fourth data release of the Sloan Digital Sky Survey (SDSS), including all survey-quality data taken through June 2004. The data release includes five-band…
A Radio Transient 0.1 pc from Sagittarius A*
Geoffrey C. Bower, Doug A. Roberts, Farhad Yusef-Zadeh +5
We report the discovery of a transient radio source 2.7 arcsec (0.1 pc projected distance) South of the Galactic Center massive black hole, Sagittarius A*. The source flared with a…
A Multi-wavelength View of the TeV Blazar Markarian 421: Correlated Variability, Flaring, and Spectral Evolution
M. Blazejowski
We report results from a multi-wavelength monitoring campaign on Mrk 421 over the period of 2003-2004. The source was observed simultaneously at TeV and X-ray energies, with suppor…