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1997A&AS..122..235Laurent-Muehleisen+ I
1997A&A...323..739Brinkmann+ II
1998ApJS..118..127Laurent-Muehleisen+ III.

Radio-loud active galaxies in the northern ROSAT All-Sky Survey. I. Radio identifications


S. A. Laurent-Muehleisen, R. I. Kollgaard, P. J. Ryan, E. D. Feigelson, W. Brinkmann, and J. Siebert

Abstract

We present 5GHz high resolution VLA observations of 2,127 radio-- and X-ray--emitting sources found in both the Green Bank (GB) 5GHz radio catalog and the ROSAT All-Sky Survey (RASS). We report core flux densities and positions accurate to =-0.5". Combined with the GB measurements of the total radio emission, we derive the core-to-lobe ratio of objects in our sample and discuss their core-dominance relative to samples of radio galaxies and BL Lacertae objects. Our results show the RASS/Green Bank (RGB) sample is approximately an order of magnitude more core-dominated than the radio galaxy sample, but is more than an order of magnitude less core-dominated than highly beamed BL Lacertae objects. Using simple beaming models, this indicates the typical object in the RGB catalog exhibits moderately beamed radio emission and is oriented at an angle to the line-of-sight theta_RGB ~25^o - 35^o. The case of the origin of the X-ray emission is not as clear; the data are consistent with either an anisotropic unbeamed or moderately beamed X-ray component.

Table 2: Radio Source Properties

This table has 1861 rows and 9 columns giving: Catalog source name, RA and DEC (J2000), observation code, S/N ratio, VLA core flux density at 5 GHz (mJy), Green Bank flux density at 5 GHz (mJy), error in Green Bank flux density (mJy), and Notes. The Notes to specific objects follow. See the paper text for further information.

LAST REVISED: 9-11-96 

#Name          RA   (J2000)   Dec   Code   S/N     S_c   S_GB   Err N
#(RGB J)                                          (mJy) (mJy)  (mJy)
0001+212   00 01 32.38  21 13 36.3    b   121      108    119    11
0001+149   00 01 32.83  14 56 08.0    d   600      159    156    14

Table 3: Radio Source Properties (Low resolution data)

This table has 436 rows and 8 columns giving: Catalog source name, RA and DEC (J2000), S/N ratio, VLA core flux density at 5 GHz (mJy), Green Bank flux density at 5 GHz (mJy), error in Green Bank flux density (mJy), and Notes. The Notes to specific objects follow. See the paper text for further information.