Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Kollgaard, R."'
Combining newly identified and previously known BL Lacs from the RASS-Green Bank (RGB) catalog, we present a sample of 127 BL Lacs, the largest ever derived from a single uniform survey. A Complete sample of 33 objects brighter than O=18.0 mag is als
Externí odkaz:
http://arxiv.org/abs/astro-ph/9905133
We present ASCA observations of the radio-selected BL Lacertae objects 1749+096 (z=0.32) and 2200+420 (BL Lac, z=0.069) performed in 1995 Sept and Nov, respectively. The ASCA spectra of both sources can be described as a first approximation by a powe
Externí odkaz:
http://arxiv.org/abs/astro-ph/9810319
Autor:
Laurent-Muehleisen, S. A., Becker, R. H., Brinkmann, W., Siebert, J., Feigelson, E. D., Kollgaard, R. I., Schmidt, G. D., Smith, P. S.
The advent of large area deep radio and X-ray surveys is leading to the creation of many new BL Lac samples. In particular, the ROSAT All-Sky, Green Bank and FIRST surveys are proving to be rich sources of new BL Lacs. We will discuss the methods use
Externí odkaz:
http://arxiv.org/abs/astro-ph/9810243
Autor:
Laurent-Muehleisen, S. A., Kollgaard, R. I., Ciardullo, R. B., Feigelson, E. D., Brinkmann, W., Siebert, J.
We present new spectroscopic identifications for 169 objects in the RASS-Green Bank (RGB) catalog of radio- and X-ray-emitting AGN. These data significantly increase the fraction of bright RGB objects with classifications. Specifically, we report and
Externí odkaz:
http://arxiv.org/abs/astro-ph/9711268
The Rosat - Green Bank BL Lac sample consists of 119 objects and smoothly bridges the gap between the previously disparate subclasses of radio- and X-ray-selected objects. Further study of this sample will provide useful constraints to the unified sc
Externí odkaz:
http://arxiv.org/abs/astro-ph/9706102
Autor:
Pesce, J. E., Urry, C. M., Maraschi, L., Treves, A., Grandi, P., Kollgaard, R., Pian, E., Smith, P., Aller, H. Aller M., Barth, A., Buckley, D., Covino, E., Filippenko, A., Hooper, E., Kedziora-Chudczer, M. Joner L., Kilkenny, D., Knee, L., Kunkel, M., Layden, A., Magalhaes, A., Marang, F., Margoniner, V., Palma, C., Pereyra, A., Rodrigues, C., Schutte, A., Sitko, M., Tornikoski, M., van der Walt, J., van Wyk, F., Whitelock, P., Wolk, S.
Optical, near-infrared, and radio observations of the BL Lac object PKS2155-304 were obtained simultaneously with a continuous UV/EUV/X-ray monitoring campaign in 1994 May. Further optical observations were gathered throughout most of 1994. The radio
Externí odkaz:
http://arxiv.org/abs/astro-ph/9704195
Autor:
Laurent-Muehleisen, S. A., Kollgaard, R. I., Ryan, P. J., Feigelson, E. D., Brinkmann, W., Siebert, J.
We present 5 GHz high resolution VLA observations of 2,127 radio- and X-ray-emitting sources found in both the Green Bank (GB) 5 GHz radio catalog and the ROSAT All-Sky Survey (RASS). We report core flux densities and positions accurate to +/-0.5". C
Externí odkaz:
http://arxiv.org/abs/astro-ph/9607058
Autor:
Wehrle, A. E., Pian, E., Urry, C. M., Maraschi, L., Mchardy, I. M., Lawson, A. J., Ghisellini, G., Hartman, R. C., Madejski, G. M., Makino, F., Marscher, A. P., Wagner, S. J., Webb, J. R., Aldering, G. S., Aller, M. F., Aller, H. D., Backman, D. E., Balonek, T. J., Boltwood, P., Bonnell, J., Caplinger, J., Celotti, A., Collmar, W., Dalton, J., Drucker, A., Falomo, R., Fichtel, C. E., Freudling, W., Gear, W. K., Gonzalez Perez, N., Hall, P., Inoue, H., Johnson, W. N., Kazanas, D., Kidger, M. R., Kii, T., Kollgaard, R. I., Kondo, Y., Kurfess, J., Lin, Y. C., Mccollum, B., McNaron Brown, K., Nagase, F., Nair, A. D., Penton, S., Pesce, J. E., Pohl, M., Raiteri, C. M., Renda, M., Robson, E. I., Sambruna, R. M., Schirmer, A. F., Shrader, C., Sikora, M., Sillanpaeae, A., Smith, P. S., Stevens, J. A., Stocke, J., Takalo, L. O., Teraesranta, H., Thompson, D. J., Thompson, R., Tornikoski, M., Tosti, Gino, Treves, A., Turcotte, P., Unwin, S. C., Valtaoja, E., Villata, M., Xu, W., Yamashita, A., Zook, A.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3982::b80641d8f4622a938d98562c941cc044
http://hdl.handle.net/11391/998197
http://hdl.handle.net/11391/998197
Autor:
Wehrle, A. E., Pian, E., Urry, C. M., Maraschi, L., Ghisellini, G., Hartman, R. C., Madejski, G. M., Makino, F., Marscher, A. P., Mchardy, I. M., Webb, J. R., Aldering, G. S., Aller, M. F., Aller, H. D., Backman, D. E., Balonek, T. J., Boltwood, P., Bonnell, J., Caplinger, J., Celotti, A., Collmar, W., Dalton, J., Drucker, A., Falomo, R., Fichtel, C. E., Freudling, W., Gear, W. K., Gonzalez Perez, N., Hall, P., Inoue, H., Johnson, W. N., Kidger, M. R., Kollgaard, R. I., Kondo, Y., Kurfess, J., Lawson, A. J., Mccollum, B., McNaron Brown, K., Nair, D., Penton, S., Pesce, J. E., Pohl, M., Raiteri, C. M., Renda, M., Robson, E. I., Sambruna, R. M., Schirmer, A. F., Shrader, C., Sikora, M., Sillanpää, A., Smith, P. S., Stevens, J. A., Stocke, J., Takalo, L. O., Teräsranta, H., Thompson, D. J., Thompson, R., Tornikoski, M., Tosti, Gino, Turcotte, P., Treves, A., Unwin, S. C., Valtaoja, E., Villata, M., Wagner, S. J., Xu, W., Zook, A. C., Strickman, M. S., Kurfess, J. D.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3982::0873a8285297b5d7218b88e66f33739f
http://hdl.handle.net/11391/998250
http://hdl.handle.net/11391/998250
Autor:
Brinkmann, W., Chester, M., Kollgaard, R., Feigelson, E., Voges, W., Hertz, P., Brinkmann, W., Chester, M., Kollgaard, R., Feigelson, E., Voges, W., Hertz, P.
Publikováno v:
Astronomy and Astrophysics. Supplement Series; January 1999, Vol. 134 Issue: 2 p221-240, 20p
