Zobrazeno 1 - 10
of 13
pro vyhledávání: '"G. M. MacAlpine"'
Autor:
D. M. Crenshaw, P. M. Rodriguez-Pascual, S. V. Penton, R. A. Edelson, D. Alloin, T. R. Ayres, J. Clavel, K. Horne, W. N. Johnson, S. Kaspi, K. T. Korista, G. A. Kriss, J. H. Krolik, M. A. Malkan, D. Maoz, H. Netzer, P. T. O'Brien, B. M. Peterson, G. A. Reichert, J. M. Shull, M.-H. Ulrich, W. Wamsteker, R. S. Warwick, T. Yaqoob, T. J. Balonek, P. Barr, G. E. Bromage, M. Carini, T. E. Carone, F.-Z. Cheng, K. K. Chuvaev, M. Dietrich, V. T. Doroshenko, D. Dultzin-Hacyan, A. V. Filippenko, C. M. Gaskell, I. S. Glass, M. R. Goad, J. Hutchings, D. Kazanas, W. Kollatschny, A. P. Koratkar, A. Laor, K. Leighly, V. M. Lyutyi, G. M. MacAlpine, Yu. F. Malkov, P. G. Martin, B. McCollum, N. I. Merkulova, L. Metik, V. G. Metlov, H. R. Miller, S. L. Morris, V. L. Oknyanskij, J. Penfold, E. Perez, G. C. Perola, G. Pike, R. W. Pogge, I. Pronik, V. I. Pronik, R. L. Ptak, M. C. Recondo-Gonzalez, J. M. Rodriguez-Espinoza, E. L. Rokaki, J. Roland, A. C. Sadun, I. Salamanca, M. Santos-Lleo, S. G. Sergeev, S. M. Smith, M. A. J. Snijders, L. S. Sparke, G. M. Stirpe, R. E. Stoner, W.-H. Sun, E. van Groningen, R. M. Wagner, S. Wagner, I. Wanders, W. F. Welsh, R. J. Weymann, B. J. Wilkes, W. Zheng
Publikováno v:
Scopus-Elsevier
We present the results of an intensive ultraviolet monitoring campaign on the Seyfert 1 galaxy NGC 4151, as part of an effort to study its short time-scale variability over a broad range in wavelength. The nucleus of NGC 4151 was observed continuousl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2466367e2322c8c786f03ec1e682e3e
Autor:
K. T. Korista, D. Alloin, P. Barr, J. Clavel, R. D. Cohen, D. M. Crenshaw, I. N. Evans, K. Horne, A. P. Koratkar, G. A. Kriss, J. H. Krolik, M. A. Malkan, S. L. Morris, H. Netzer, P. T. O'Brien, B. M. Peterson, G. A. Reichert, P. M. Rodriguez-Pascual, W. Wamsteker, K. S. J. Anderson, D. J. Axon, E. Benitez, P. Berlind, R. Bertram, J. H., Jr. Blackwell, N. G. Bochkarev, C. Boisson, M. Carini, R. Carrillo, T. E. Carone, F.-Z. Cheng, J. A. Christensen, K. K. Chuvaev, M. Dietrich, J. J. Dokter, V. Doroshenko, D. Dultzin-Hacyan, M. N. England, B. R. Espey, A. V. Filippenko, C. M. Gaskell, M. R. Goad, L. C. Ho, J. P. Huchra, X. J. Jiang, S. Kaspi, W. Kollatschny, A. Laor, J.-P. Luminet, G. M. MacAlpine, J. W. MacKenty, Yu. F. Malkov, D. Maoz, P. G. Martin, T. Matheson, B. McCollum, N. Merkulova, L. Metik, M. Mignoli, H. R. Miller, M. G. Pastoriza, D. Pelat, J. Penfold, M. Perez, G. C. Perola, J. L. Persaud, J. Peters, R. Pitts, R. W. Pogge, I. Pronik, V. I. Pronik, R. L. Ptak, L. Rawley, M. C. Recondo-Gonzalez, J. M. Rodriguez-Espinosa, W. Romanishin, A. C. Sadun, I. Salamanca, M. Santos-Lleo, K. Sekiguchi, S. G. Sergeev, A. I. Shapovalova, J. C. Shields, C. Shrader, J. M. Shull, N. A. Silbermann, M. L. Sitko, D. R. Skillman, H. A. Smith, S. M. Smith, M. A. J. Snijders, L. S. Sparke, G. M. Stirpe, R. E. Stoner, W.-H. Sun, U. Thiele, S. Tokarz, Z. I. Tsvetanov, D. A. Turnshek, S. Veilleux, R. M. Wagner, S. J. Wagner, I. Wanders, T. Wang, W. F. Welsh, R. J. Weymann, R. J. White, B. J. Wilkes, B. J. Wills, C. Winge, H. Wu, Z. L. Zou
Publikováno v:
The Astrophysical Journal Supplement Series. 97:285
We present the data and initial results from a combined Hubble Space Telescope (HST)/IUE/ground-based spectroscopic monitoring campaign on the Seyfert 1 galaxy NGC 5548 that was undertaken in order to address questions that require both higher tempor
Autor:
R. M. Hjellming, George R. Ricker, J. G. Jernigan, R. E. Doxsey, G. M. Macalpine, R. G. Dower, J. P. Delvaille, G. W. Clarke
Publikováno v:
Nature. 271:35-37
The discovery of X-ray QSO MR2251-178 at a distance of 410 Mpc is reported. The observations are based on signals (2-11 keV) from NRAO's Very Large Array (VLA) radio telescope and from two independent rotating modulation collimators (RMC). Coordinate
Publikováno v:
The Astrophysical Journal. 219:372
A collision between two gas clouds with initial densities of approximately 10 million per cu cm, velocities of about 1000 km/s, and radii of approximately 1 pc is investigated quantitatively by coupling a calculation of the radiation spectrum resulti
Publikováno v:
The Astrophysical Journal Supplement Series. 35:203
Autor:
G. M. MacAlpine, D. W. Lewis
Publikováno v:
The Astrophysical Journal Supplement Series. 36:587
Autor:
J. M. Shuder, G. M. MacAlpine
Publikováno v:
The Astrophysical Journal. 230:348
The intensities of QSO ultraviolet emission lines are investigated with the aid of photoionization model calculations. In efforts directed toward understanding recent observations, particular consideration is given to such processes as charge-exchang
Autor:
Craig B. Foltz, Frederic H. Chaffee, Paul C. Hewett, Ray J. Weymann, Scott F. Anderson, G. M. MacAlpine
Publikováno v:
The Astronomical Journal. 98:1959
Publikováno v:
The Astrophysical Journal Supplement Series. 35:197
Autor:
G. M. MacAlpine
Publikováno v:
Publications of the Astronomical Society of the Pacific. 98:134
An overview of line-emitting regions in active galactic nuclei (AGN) is presented. Most existing AGN gas line-intensity measurements are accounted for by detailed photoionization models used in conjunction with spectrophotometric observations. The Se