Zobrazeno 1 - 10
of 78
pro vyhledávání: '"WEHRLE, ANN E."'
Blazars are characterized by largely aperiodic variability on timescales ranging from minutes to decades across the electromagnetic spectrum. The TESS (Transiting Exoplanet Survey Satellite) mission provides continuous sampling of blazar variability
Externí odkaz:
http://arxiv.org/abs/2403.14744
Autor:
Wehrle, Ann E., Carini, Michael, Wiita, Paul J., Pepper, Joshua, Gaudi, B. Scott, Pogge, Richard W., Stassun, Keivan G., Villaneuva, Jr., Steven
We present second observations by K2 of OJ~287 and 7 other $\gamma$-ray AGNs obtained in 2017-2018, second and third observations of the lobe-dominated, steep spectrum quasar 3C~207, and observations of 9 additional blazars not previously observed wi
Externí odkaz:
http://arxiv.org/abs/2305.17060
Publikováno v:
2014, ApJ, 785, 60
We have used photometry from the Kepler satellite to characterize the variability of four radio-loud active galactic nuclei (AGN) on timescales from years to minutes. The Kepler satellite produced nearly continuous high precision data sets which prov
Externí odkaz:
http://arxiv.org/abs/1311.4838
Autor:
Jorstad, Svetlana G., Marscher, Alan P., Smith, Paul S., Larionov, Valeri M., Agudo, Iván, Gurwell, Mark, Wehrle, Ann E., Lähteenmäki, Anne, Nikolashvili, Maria G., Schmidt, Gary D., Arkharov, Arkady A., Blinov, Dmitry A., Blumenthal, Kelly, Casadio, Carolina, Chigladze, Revaz A., Efimova, Natatia V., Eggen, Joseph R., Gómez, José L., Grupe, Dirk, Hagen-Thorn, Vladimir A., Joshi, Manasvita, Kimeridze, Givi N., Konstantinova, Tatiana S., Kopatskaya, Evgenia N., Kurtanidze, Omar M., Kurtanidze, Sofia O., Larionova, Elena G., Larionova, Liudmilla V., Lorand, Sigua A., MacDonald, Nicholas R., Maune, Jeremy D., McHardy, Ian M., Miller, H. Richard, Molina, Sol N., Morozova, Daria A., Scott, Terri, Taylor, Brian, Tornikoski, Merja, Troitsky, Ivan S., Thum, Clemens, Walker, Gary, Williamson, Karen E., Sallum, Stephanie, Consiglio, Santina, Strelnitski, Vladimir
We analyze the multifrequency behavior of the quasar 3C 454.3 during three prominent \gamma-ray outbursts: 2009 Autumn, 2010 Spring, and 2010 Autumn. The data reveal a repeating pattern, including a triple flare structure, in the properties of each \
Externí odkaz:
http://arxiv.org/abs/1307.2522
Autor:
Agudo, Ivan, Marscher, Alan P., Jorstad, Svetlana G., Larionov, Valeri M., Gomez, Jose L., Lahteenmaki, Anne, Smith, Paul S., Nilsson, Kari, Readhead, Anthony C. S., Aller, Margo F., Heidt, Jochen, Gurwell, Mark, Thum, Clemens, Wehrle, Ann E., Kurtanidze, Omar M.
We present observations of a major outburst at centimeter, millimeter, optical, X-ray, and gamma-ray wavelengths of the BL Lacertae object AO 0235+164 in 2008. We analyze the timing of multi-waveband variations in the flux and linear polarization, as
Externí odkaz:
http://arxiv.org/abs/1303.2039
Autor:
Wehrle, Ann E., Wiita, Paul J., Unwin, Stephen C., Di Lorenzo, Paolo, Revalski, Mitchell, Silano, Daniel, Sprague, Dan
We have used Kepler photometry to characterize variability in four radio-loud active galactic nuclei (three quasars and one object tentatively identified as a Seyfert 1.5 galaxy) on timescales from minutes to months, comparable to the light crossing
Externí odkaz:
http://arxiv.org/abs/1303.1147
Autor:
Wehrle, Ann E., Marscher, Alan P., Jorstad, Svetlana G., Gurwell, Mark A., Joshi, Manasvita, MacDonald, Nicholas R., Williamson, Karen E., Agudo, Ivan, Grupe, Dirk
We present multiwavelength data of the blazar 3C 454.3 obtained during an extremely bright outburst from November 2010 through January 2011. These include flux density measurements with the Herschel Space Observatory at five submillimeter-wave and fa
Externí odkaz:
http://arxiv.org/abs/1208.4564
Autor:
Agudo, Ivan, Marscher, Alan P., Jorstad, Svetlana G., Larionov, Valeri M., Gomez, Jose L., Lahteenmaki, Anne, Smith, Paul S., Nilsson, Kari, Readhead, Anthony C. S., Aller, Margo F., Heidt, Jochen, Gurwell, Mark, Thum, Clemens, Wehrle, Ann E., Kurtanidze, Omar M.
We locate the gamma-ray and lower frequency emission in flares of the BL Lac object AO 0235+164 at >12pc in the jet of the source from the central engine. We employ time-dependent multi-spectral-range flux and linear polarization monitoring observati
Externí odkaz:
http://arxiv.org/abs/1112.1385
Autor:
Agudo, Ivan, Marscher, Alan P., Jorstad, Svetlana G., Larionov, Valeri M., Gomez, Jose L., Lahteenmaki, Anne, Smith, Paul S., Nilsson, Kari, Readhead, Anthony C. S., Aller, Margo F., Heidt, Jochen, Gurwell, Mark, Thum, Clemens, Wehrle, Ann E., Nikolashvili, Maria G., Aller, Hugh D., Benitez, Erika, Blinov, Dmitriy A., Hagen-Thorn, Vladimir A., Hiriart, David, Jannuzi, Buell T., Joshi, Manasvita, Kimeridze, Givi N., Kurtanidze, Omar M., Kurtanidze, Sofia O., Lindfors, Elina, Molina, Sol N., Morozova, Daria A., Nieppola, Elina, Olmstead, Alice R., Reinthal, Riho, Roca-Sogorb, Mar, Schmidt, Gary D., Sigua, Lorand A., Sillanpaa, Aimo, Takalo, Leo, Taylor, Brian, Tornikoski, Merja, Troitsky, Ivan S., Zook, Alma C., Wiesemeyer, Helmut
We present observations of a major outburst at centimeter, millimeter, optical, X-ray, and gamma-ray wavelengths of the BL Lacertae object AO 0235+164. We analyze the timing of multi-waveband variations in the flux and linear polarization, as well as
Externí odkaz:
http://arxiv.org/abs/1105.0549
Blazar 3C 454.3 in Outburst and Quiescence During 2005-2007: Two Variable Synchrotron Emission Peaks
We monitored the flaring blazar 3C 454.3 during 2005 June-July with the Spitzer Infrared Spectrograph (IRS: 15 epochs), Infrared Array Camera (IRAC: 12 epochs) and Multiband Imaging Photometer (MIPS: 2 epochs). We also made Spitzer IRS, IRAC, and MIP
Externí odkaz:
http://arxiv.org/abs/1003.3642