Publications (19)
An ASCA observation of the radio-loud narrow-line Seyfert 1 galaxy RGB J0044+193
J. Siebert, K. M. Leighly, S. A. Laurent-Muehleisen +3
Soft X-ray properties of a complete sample of radio sources
J. Siebert, W. Brinkmann, R. Morganti +4
Radio-loud active galaxies in the northern ROSAT All-Sky Survey. I. Radio identifications
S. A. Laurent-Muehleisen, R. I. Kollgaard, P. J. Ryan +3
X-ray properties of the Parkes sample of flat-spectrum radio sources: dust in radio-loud quasars?
J. Siebert, W. Brinkmann, M. J. Drinkwater +4
BeppoSAX Observations of 2 Jy Lobe-dominated Broad-Line Sources: the Discovery of a Hard X-ray Component
R. Morganti, P. Padovani, J. Siebert +3
Does the optical-to-X-ray energy distribution of quasars depend on optical luminosity?
W. Yuan, J. Siebert, W. Brinkmann
Four New BL Lac Surveys: Sampling New Populations
S. A. Laurent-Muehleisen, R. H. Becker, W. Brinkmann +5
ASCA observations of high redshift quasars
J. Siebert, M. Matsuoka, W. Brinkmann +3
An RXTE Observation of NGC 6300: a new bright Compton reflection Dominated Seyfert 2 Galaxy
K. M. Leighly, J. P. Halpern, H. Awaki +3
The RGB Sample of Intermediate BL Lacs
S. A. Laurent-Muehleisen, R. I. Kollgaard, E. D. Feigelson +2
A test for partial correlation with censored astronomical data
M. G. Akritas, J. Siebert
Spatial and spectral X-ray properties of the powerful radio galaxy Hercules A: environment and jet/ICM interaction
J. Siebert, N. Kawai, W. Brinkmann
The broad band X-ray spectra of intermediate BL Lac objects
J. Siebert, W. Brinkmann, S. A. Laurent-Muehleisen +1
Recent X-ray observations of intermediate BL Lac objects
J. Siebert, W. Brinkmann, S. A. Laurent-Muehleisen
Radio-loud Active Galaxies in the Northern ROSAT All-Sky Survey III: New Spectroscopic Identifications from the RGB BL Lac Survey
S. A. Laurent-Muehleisen, R. I. Kollgaard, R. B. Ciardullo +3
The warm absorber in IRAS 13349+2438: dusty or not?
J. Siebert, S. Komossa, W. Brinkmann
Elemental partitioning and isotopic fractionation of Zn between metal and silicate and geochemical estimation of the S content of the Earth's core
B. Mahan, J. Siebert, E. A. Pringle +1
Broad band energy distribution of ROSAT detected quasars II: Radio-quiet objects
W. Yuan, W. Brinkmann, J. Siebert +1
ROSAT HRI observations of seven high redshift quasars
J. Siebert, W. Brinkmann