Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Winter, Lisa M."'
We present a spectroscopic and imaging study of an abnormal active galactic nucleus (AGN), 2MASX J00423991+3017515. This AGN is newly identified in the hard X-rays by the Swift BAT All-Sky survey and found in an edge-on disk galaxy interacting with a
Externí odkaz:
http://arxiv.org/abs/2103.00012
Autor:
Mushotzky, Richard F., Aird, James, Barger, Amy J., Cappelluti, Nico, Chartas, George, Corrales, Lia, Eufrasio, Rafael, Fabian, Andrew C., Falcone, Abraham D., Gallo, Elena, Gilli, Roberto, Grant, Catherine E., Hardcastle, Martin, Hodges-Kluck, Edmund, Kara, Erin, Koss, Michael, Li, Hui, Lisse, Carey M., Loewenstein, Michael, Markevitch, Maxim, Meyer, Eileen T., Miller, Eric D., Mulchaey, John, Petre, Robert, Ptak, Andrew J., Reynolds, Christopher S., Russell, Helen R., Safi-Harb, Samar, Smith, Randall K., Snios, Bradford, Tombesi, Francesco, Valencic, Lynne, Walker, Stephen A., Williams, Brian J., Winter, Lisa M., Yamaguchi, Hiroya, Zhang, William W., Arenberg, Jon, Brandt, Niel, Burrows, David N., Georganopoulos, Markos, Miller, Jon M., Norman, Colin A., Rosati, Piero
Much of the baryonic matter in the Universe, including the most active and luminous sources, are best studied in the X-ray band. Key advances in X-ray optics and detectors have paved the way for the Advanced X-ray Imaging Satellite (AXIS), a Probe-cl
Externí odkaz:
http://arxiv.org/abs/1903.04083
Two scenarios have been proposed to account for sustained $\ge 30$\,MeV gamma-ray emission in solar flares: (1) prolonged particle acceleration/trapping involving large-scale magnetic loops at the flare site, and (2) precipitation of high-energy ($>$
Externí odkaz:
http://arxiv.org/abs/1807.06001
Autor:
Winter, Lisa M., Gannon, Jennifer, Pernak, Rick, Huston, Stu, Quinn, Richard, Pope, Edward, Ruffenach, Alexis, Bernardara, Pietro, Crocker, Nicholas
Space weather events produce variations in the electric current in the Earth's magnetosphere and ionosphere. From these high altitude atmospheric regions, resulting geomagnetically induced currents (GICs) can lead to fluctuations in ground currents t
Externí odkaz:
http://arxiv.org/abs/1705.05325
The newly revised sunspot number series allows for placing historical geoeffective storms in the context of several hundred years of solar activity. Using statistical analyses of the Geostationary Operational Environmental Satellites (GOES) X-ray obs
Externí odkaz:
http://arxiv.org/abs/1605.00503
Autor:
Winter, Lisa M., Balasubramaniam, K.
We present the discovery of a relationship between the maximum ratio of the flare flux (namely, 0.5-4 Ang to the 1-8 Ang flux) and non-flare background (namely, the 1-8 Ang background flux), which clearly separates flares into classes by peak flux le
Externí odkaz:
http://arxiv.org/abs/1504.00294
Publikováno v:
Berghea, C. T., Dudik,R. P., Tincher, J., & Winter, L. M. 2013, ApJ, 776, 100
We have used XMM-Newton's Optical Monitor (OM) images to study the local environment of a sample of 27 Ultraluminous X-ray Sources (ULXs) in nearby galaxies. UVW1 fluxes were extracted from 100 pc regions centered on the ULX positions. We find that a
Externí odkaz:
http://arxiv.org/abs/1403.2758
Autor:
Vasudevan, Ranjan V., Brandt, William N., Mushotzky, Richard F., Winter, Lisa M., Baumgartner, Wayne H., Shimizu, Thomas T., Schneider, Donald P., Nousek, John A.
We present a detailed X-ray spectral analysis of a complete sample of hard X-ray selected AGN in the Northern Galactic Cap of the 58-month Swift Burst Alert Telescope (Swift/BAT) catalog, consisting of 100 AGN with b>50deg. This region has excellent
Externí odkaz:
http://arxiv.org/abs/1212.2957
The Swift Burst Alert Telescope (BAT) is discovering interesting new objects while monitoring the sky in the 14-195 keV band. Here we present the X-ray properties and spectral energy distributions for two unusual AGN sources. Both NVSS 193013+341047
Externí odkaz:
http://arxiv.org/abs/1204.4421
Autor:
Winter, Lisa M.
Detection of absorbed active galactic nuclei and their properties remains an elusive and important problem in understanding the evolution and activation of black holes. With the very hard X-ray survey conducted by Swift's Burst Alert Telescope - the
Externí odkaz:
http://arxiv.org/abs/1112.0545