Results 11 to 20 of about 4,576 (128)

Disk-Jet Connection in the Radio Galaxy 3C 120 [PDF]

, 2009
We present the results of extensive multi-frequency monitoring of the radio galaxy 3C 120 between 2002 and 2007 at X-ray, optical, and radio wave bands, as well as imaging with the Very Long Baseline Array (VLBA).
A. J. Benker, Aaron E. Watkins, Alan P. Marscher, Alice R. Olmstead, Amanda K. Kruse, Anne Lähteenmäki, Baars, Benjamin Chicka, Blandford, Bradley W. Peterson, C. Martin Gaskell, Cecelia H. Hedrick, Chatterjee, David Brokofsky, Dmitriy V. Strel'nikov, Doroshenko, Doroshenko, Edelson, Elizabeth S. Klimek, Eric A. Petersen, Evelina R. Gaynullina, Gomez, Grandi, H. Richard Miller, Hong-Jian Pan, Hugh D. Aller, Ian M. McHardy, Jeffrey S. Campbell, Jorstad, Jorstad, Jun Tao, Kathleen Wheeler, Kazanas, Kevin Marshall, Klimek, Konstantin N. Grankin, Livio, Mansur A. Ibrahimov, Margo F. Aller, Mark C. Bottorff, Markoff, Markowitz, Marshall, Mead, Merja Tornikoski, Nowak, Ogle, Peterson, Pounds, Ritaban Chatterjee, Shakura, Shepherd, Shoji Masatoshi, Svetlana G. Jorstad, Talvikki Hovatta, Taylor S. Chonis, Thomas R. Miller, Tout, Ulvestad, Valtaoja, Vlahakis, Walker, Wesley T. Ryle, Woo, Zdziarski, Zhiqiang Shen   +65 more
core   +2 more sources

X-ray vs. Optical Variations in the Seyfert 1 Nucleus NGC 3516: A Puzzling Disconnectedness

, 2002
We present optical broadband (B and R) observations of the Seyfert 1 nucleus NGC 3516, obtained at Wise Observatory from March 1997 to March 2002, contemporaneously with X-ray 2-10 keV measurements with RXTE.
Alex Markowitz, Dan Maoz, Done C., Guilbert P. W., Kirpal Nandra, Rick Edelson, Timmer J.   +6 more
core   +1 more source

The high frequency power spectrum of Markarian 766 [PDF]

, 2003
An analysis is presented of the power spectrum of X-ray variability of the bright Seyfert 1 galaxy Mrk 766 as observed by XMM-Newton. Over the 0.2-10 keV energy range the power spectral density (PSD) is well-represented by a power-law with a slope of ...
A. C. Fabian, Belloni, Benlloch, Boller, Boller, Churazov, Edelson, Edelson, Edelson, Fabian, Frank, Green, Haardt, Herrero, Jansen, Lawrence, Lawrence, Lin, Markowitz, Mason, McHardy, Nandra, Nowak, Nowak, Papadakis, Papadakis, Papadakis, Papadakis, Pounds, Press, Rees, S. Vaughan, Strüder, Timmer, Turner, Uttley, van der Klis, van der Klis, van der Klis, Vaughan, Vaughan, Wandel, Wandel   +42 more
core   +3 more sources

Modeling the variability of the BL Lacertae object PKS 2155-304

, 1998
The bright X-ray selected BL Lacertae object PKS 2155-304 has been the target of two intense multiwavelength campaigns, in November 1991 and in May 1994.
Alan P. Marscher, Brinkmann W., Gomez J. L., Markos Georganopoulos   +3 more
core   +1 more source

Multiwavelength Monitoring of the BL Lacertae Object PKS 2155-304 in May 1994. II. The IUE Campaign

, 1997
PKS 2155-304, the brightest BL Lac object in the ultraviolet sky, was monitored with the IUE satellite at ~1 hour time-resolution for ten nearly uninterrupted days in May 1994.
Aldo Treves, Annalisa Celotti, C. Megan Urry, Cappi M., Elena Pian, Fabian A. C., Gabriele Ghisellini, Ghisellini G., Greg Madejski, Henner H. Fink, Herman L. Marshall, Ian M. George, J. Michael Shull, Joseph E. Pesce, Laura Maraschi, Paola Grandi, Renato Falomo, Ron I. Kollgaard, Seaton M. J., Steve Penton, Thierry J.‐L. Courvoisier, Tsuneo Kii, Vestrand W. T., Wagner S. J., Willem Wamsteker   +24 more
core   +1 more source

Relativistic iron K X-ray Reverberation in NGC 4151 [PDF]

, 2012
Recent X-ray observations have enabled the study of reverberation delays in AGN for the first time. All the detections so far are in sources with a strong soft excess, and the measured delay is between the hard (1-3 keV) direct continuum and the soft ...
A. C. Fabian, A. Zoghbi, Bentz, C. S. Reynolds, Crummy, de Marco, E. M. Cackett, Edelson, Emmanoulopoulos, Fabian, Kotov, Markowitz, Matt, Miller, Miller, Miller, Nandra, Nowak, Ogle, Puccetti, Reynolds, Ross, Rybicki, Schurch, Schurch, Shakura, Stella, Wang, Warwick, Weaver, Yaqoob, Zdziarski, Zoghbi, Zoghbi, Zoghbi   +34 more
core   +3 more sources

Culturally Relevant Pedagogy in Practice: A Case Study of a Teacher's Divergence From Large‐Scale Science Curriculum

Journal of Research in Science Teaching, Volume 63, Issue 1, Page 6-21, January 2026.
ABSTRACT Culturally relevant pedagogy (CRP) is an approach to teaching that challenges the inequitable structures that create an education debt for minoritized students. Many studies of CRP in science education focus on teachers' philosophies and dispositions; fewer studies have focused on enacted teaching practice, such as the use of curricular ...
Emily Adah Miller, Emily V. Reigh, Clausell Mathis   +2 more
wiley   +1 more source

X-ray Variability Characteristics of the Seyfert 1 Galaxy NGC 3783 [PDF]

, 2005
We have characterized the energy-dependent X-ray variability properties of the Seyfert~1 galaxy NGC 3783 using archival XMM-Newton and Rossi X-ray Timing Explorer data.
A. Markowitz, Lyubarskii Y. E., Mineshige S., Nowak M., Padovani P., Papadakis I., Papadakis I., Sunyaev R., Svensson R., Timmer J.   +9 more
core   +1 more source

HISTORY AND THEORY AND PHILOLOGY NOW: TOGETHER IN THEORY

History and Theory, Volume 64, Issue 4, Page 12-29, December 2025.
ABSTRACT In English‐speaking academe, philology has virtually disappeared as a defined discipline, although its traditional array of skills and techniques for reading, editing, and interpreting texts are indispensable to fields ranging from biblical studies through every language and literature and are central to historical research. Philology's status
Nancy Partner
wiley   +1 more source

Complex Optical/UV and X-ray Variability of the Seyfert 1 galaxy 1H 0419-577

, 2017
We present detailed broadband UV/optical to X-ray spectral variability of the Seyfert 1 galaxy 1H 0419-577 using six XMM-Newton observations performed during 2002-2003.
Dewangan, Gulab C., Kembhavi, Ajit K., Misra, Ranjeev, Naik, Sachindra, Pal, Main   +4 more
core   +1 more source