Results 21 to 30 of about 225,473 (202)

Photoelectric Polarimetry and the Gas Pixel Detector Yesterday, Today and Tomorrow

Galaxies, 2018
Since the very beginning of X-ray Astronomy, polarimetry has been suggested as a tool of diagnostics, of great potentiality. While almost all measurements of X-rays were based on detectors using the photoelectric effect, the first attempt to perform ...
Enrico Costa
doaj   +1 more source

An efficient photoelectric X-ray Polarimeter for the study of Black Holes and Neutron Stars [PDF]

, 2001
In astronomy there are basically four kinds of observations to extract the information carried by electromagnetic radiation: photometry, imaging, spectroscopy and polarimetry.
Bellazzini, Ronaldo, Brez, Alessandro, Costa, Enrico, Lumb, Nicholas, Soffitta, Paolo, Spandre, Gloria   +5 more
core   +2 more sources

Spin period change and the magnetic fields of neutron stars in Be X-ray binaries in the SMC

EPJ Web of Conferences, 2014
We report on the long term average spin period, rate of change of spin period and X-ray luminosity during outbursts for 42 Be X-ray binary systems in the Small Magellanic Cloud. We also collect and calculate parameters of each system and use this data to
Klus H., Ho W.C.G., Coe M.J., Corbet R.H.D., Townsend L.J.   +4 more
doaj   +1 more source

First XMM-Newton Observations of the Globular Cluster M22 [PDF]

, 2001
We have examined preliminary data of the globular cluster, M22, from the EPIC MOS detectors on board XMM-Newton. We have detected 27 X-ray sources within the centre of the field of view, 24 of which are new detections. Three sources were found within the
Asai, Asai, B. Gendre, Bahcall, Briel, Campana, D'Amico, D. Barret, Di Stefano, Djorgovski, Djorgovski, Fox, Grindlay, Grindlay, Harris, Hasinger, Hertz, Hertz, Johnston, Johnston, Kulkarni, Lightman, N. A. Webb, Narayan, Peterson, Piotto, Ramsay, Richman, Ritter, Thorsett, Turner, van der Klis, Verbunt, Verbunt, Verbunt, Verbunt, Verbunt, Zwart   +37 more
core   +2 more sources

Investigating charge dynamics at lead halide perovskite single crystal surfaces

JPhys Energy
To further develop lead halide perovskites for their application in solar cells, understanding the material’s fundamental behavior under illumination is necessary.
Birgit Kammlander, Alberto García-Fernández, Sebastian Svanström, Erika Giangrisostomi, Ruslan Ovsyannikov, Håkan Rensmo, Ute B Cappel   +6 more
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Circular dichroism in multiphoton ionization of resonantly excited helium ions near channel closing

Scientific Reports
The circular dichroism (CD) of photoelectrons generated by near-infrared (NIR) laser pulses using multiphoton ionization of excited He+ ions in the 3p(m= +1) state is investigated.
René Wagner, Markus Ilchen, Nicolas Douguet, Philipp Schmidt, Niclas Wieland, Carlo Callegari, Zachary Delk, Alexander Demidovich, Giovanni De Ninno, Michele Di Fraia, Jiri Hofbrucker, Michele Manfredda, Valerija Music, Oksana Plekan, Kevin C. Prince, Daniel E. Rivas, Marco Zangrando, Alexei N. Grum-Grzhimailo, Klaus Bartschat, Michael Meyer   +19 more
doaj   +1 more source

Mirax: A Brazilian X-Ray Astronomy Satellite Mission [PDF]

, 2003
We describe the ``Monitor e Imageador de Raios-X'' (MIRAX), an X-ray astronomy satellite mission proposed by the high energy astrophysics group at the National Institute for Space Research (INPE) in Brazil to the Brazilian Space Agency.
Boella, Bouchet, Braga, Braga, Caroli, Dicke, E. Kendziorra, E. Kuulkers, F. D'Amico, F. Jablonski, Garcia, Gottesman, J. Braga, J. Heise, J. Matteson, J. Wilms, Jager, Levine, Levine, Paul, R. Remillard, R. Rothschild, R. Staubert, Roques, Shindler, Skinner, Sunyaev, W. Heindl, Willmore   +28 more
core   +2 more sources

Chiral spin-liquid-like state in pyrochlore iridate thin films

Nature Communications
The pyrochlore iridates have become ideal platforms to unravel fascinating correlated and topological phenomena that stem from the intricate interplay among strong spin-orbit coupling, electronic correlations, lattice with geometric frustration, and ...
Xiaoran Liu, Jong-Woo Kim, Yao Wang, Michael Terilli, Xun Jia, Mikhail Kareev, Shiyu Peng, Fangdi Wen, Tsung-Chi Wu, Huyongqing Chen, Wanzheng Hu, Mary H. Upton, Jungho Kim, Yongseong Choi, Daniel Haskel, Hongming Weng, Philip J. Ryan, Yue Cao, Yang Qi, Jiandong Guo, Jak Chakhalian   +20 more
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The Sensitivity of Nucleosynthesis in Type I X-ray Bursts to Thermonuclear Reaction-Rate Variations [PDF]

, 2008
We examine the sensitivity of nucleosynthesis in Type I X-ray bursts to variations in nuclear rates. As a large number of nuclear processes are involved in these phenomena -with the vast majority of reaction rates only determined theoretically due to the
Amthor, Angulo, Anuj Parikh, Arnould, Audi, Audi, Belian, Bildsten, Chang, Christian Iliadis, Clark, Cottam, Cumming, Fermín Moreno, Fisker, Fisker, Fisker, Fisker, Fujimoto, Grindlay, Hix, Iliadis, Iliadis, Iliadis, Izzard, Jordan, Jordi José, José, Koike, Koike, Pietsch, Rauscher, Roberts, Schatz, Schatz, Schatz, Schatz, Schury, Strohmayer, Taam, Taam, Taam, The, Thielemann, Wallace, Weinberg, Woosley, Woosley   +47 more
core   +3 more sources

A Multiwavelength Investigation of PSR J2229+6114 and its Pulsar Wind Nebula in the Radio, X-Ray, and Gamma-Ray Bands

The Astrophysical Journal, 2023
G106.3+2.7, commonly considered to be a composite supernova remnant (SNR), is characterized by a boomerang-shaped pulsar wind nebula (PWN) and two distinct (“head” and “tail”) regions in the radio band. A discovery of very-high-energy gamma-ray emission (
I. Pope, K. Mori, M. Abdelmaguid, J. D. Gelfand, S. P. Reynolds, S. Safi-Harb, C. J. Hailey, H. An, NuSTAR Collaboration, P. Bangale, P. Batista, W. Benbow, J. H. Buckley, M. Capasso, J. L. Christiansen, A. J. Chromey, A. Falcone, Q. Feng, J. P. Finley, G. M Foote, G. Gallagher, W. F Hanlon, D. Hanna, O. Hervet, J. Holder, T. B. Humensky, W. Jin, P. Kaaret, M. Kertzman, D. Kieda, T. K. Kleiner, N. Korzoun, F. Krennrich, S. Kumar, M. J. Lang, G. Maier, C. E McGrath, C. L. Mooney, P. Moriarty, R. Mukherjee, S. O’Brien, R. A. Ong, N. Park, S. R. Patel, K. Pfrang, M. Pohl, E. Pueschel, J. Quinn, K. Ragan, P. T. Reynolds, E. Roache, I. Sadeh, L. Saha, G. H. Sembroski, D. Tak, J. V. Tucci, A. Weinstein, D. A. Williams, J. Woo, VERITAS Collaboration   +59 more
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