Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Leutenegger, Maurice"'
Autor:
Shah, Chintan, Kühn, Steffen, Bernitt, Sonja, Steinbrügge, René, Togawa, Moto, Berger, Lukas, Buck, Jens, Hoesch, Moritz, Seltmann, Jörn, Kozlov, Mikhail G., Porsev, Sergey G., Gu, Ming Feng, Porter, F. Scott, Pfeifer, Thomas, Leutenegger, Maurice A., Cheung, Charles, Safronova, Marianna S., López-Urrutia, José R. Crespo
Publikováno v:
Physical Review A 109, 063108 (2024)
We used the monochromatic soft-x-ray beamline P04 at the synchrotron-radiation facility PETRA III to resonantly excite the strongest $2p-3d$ transitions in neon-like Ni XIX ions, $[2p^6]_{J=0} \rightarrow [(2p^5)_{1/2}\,3d_{3/2}]_{J=1}$ and $[2p^6]_{
Externí odkaz:
http://arxiv.org/abs/2404.14589
Autor:
Grell, Gabriel J., Leutenegger, Maurice A., Amaro, Pedro, López-Urrutia, José R. Crespo, Shah, Chintan
We calculated cross sections for the dielectronic recombination (DR) satellite lines of Fe XVII and benchmarked our predictions with experimental cross sections of Fe XVII resonances that were mono-energetically excited in an electron beam ion trap.
Externí odkaz:
http://arxiv.org/abs/2402.08767
Autor:
Shah, Chintan, Togawa, Moto, Botz, Marc, Danisch, Jonas, Goes, Joschka J., Bernitt, Sonja, Maxton, Marleen, Köbnick, Kai, Buck, Jen, Seltmann, Jörn, Hoesch, Moritz, Gu, Ming Feng, Porter, F. Scott, Pfeifer, Thomas, Leutenegger, Maurice A., Cheung, Charles, Safronova, Marianna S., López-Urrutia, José R. Crespo
Publikováno v:
The Astrophysical Journal, 969, 52 (2024)
We improve by a factor of 4-20 the energy accuracy of the strongest soft X-ray transitions of Fe XVII ions by resonantly exciting them in an electron beam ion trap with a monochromatic beam at the P04 beamline of the PETRA III synchrotron facility. B
Externí odkaz:
http://arxiv.org/abs/2401.08395
Autor:
Mizumoto, Misaki, Tsujimoto, Masahiro, Cumbee, Renata S., Eckart, Megan E., Ishisaki, Yoshitaka, Kilbourne, Caroline A., Hodges-Kluck, Edmund, Leutenegger, Maurice A., Porter, Frederick S., Sawada, Makoto, Takei, Yoh, Uchida, Yuusuke, Yamada, Shin'ya, team, the XRISM Resolve
Publikováno v:
Proc. SPIE 12181, Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray, 121815Z (31 August 2022)
The spectroscopic performance of x-ray instruments can be affected at high count rates. The effects and mitigation in the optical chain, such as x-ray attenuation filters or de-focusing mirrors, are widely discussed, but those in the signal chain are
Externí odkaz:
http://arxiv.org/abs/2312.15588
Autor:
Drake, Jeremy J., Cohen, David, Corcoran, Michael, Leutenegger, Maurice, Monsch, Kristina, Nazé, Yaël, Oskinova, Lidia, Antoniou, Vallia
We present some of the salient aspects of the scientific motivation for high resolution soft X-ray spectroscopy of early-type stars with the Line Emission Mapper X-ray Probe. The major strength of {\it LEM} for hot star physics is its large effective
Externí odkaz:
http://arxiv.org/abs/2310.16865
Autor:
Kraft, Ralph, Markevitch, Maxim, Kilbourne, Caroline, Adams, Joseph S., Akamatsu, Hiroki, Ayromlou, Mohammadreza, Bandler, Simon R., Barbera, Marco, Bennett, Douglas A., Bhardwaj, Anil, Biffi, Veronica, Bodewits, Dennis, Bogdan, Akos, Bonamente, Massimiliano, Borgani, Stefano, Branduardi-Raymont, Graziella, Bregman, Joel N., Burchett, Joseph N., Cann, Jenna, Carter, Jenny, Chakraborty, Priyanka, Churazov, Eugene, Crain, Robert A., Cumbee, Renata, Dave, Romeel, DiPirro, Michael, Dolag, Klaus, Doriese, W. Bertrand, Drake, Jeremy, Dunn, William, Eckart, Megan, Eckert, Dominique, Ettori, Stefano, Forman, William, Galeazzi, Massimiliano, Gall, Amy, Gatuzz, Efrain, Hell, Natalie, Hodges-Kluck, Edmund, Jackman, Caitriona, Jahromi, Amir, Jennings, Fred, Jones, Christine, Kaaret, Philip, Kavanagh, Patrick J., Kelley, Richard L., Khabibullin, Ildar, Kim, Chang-Goo, Koutroumpa, Dimitra, Kovacs, Orsolya, Kuntz, K. D., Lau, Erwin, Lee, Shiu-Hang, Leutenegger, Maurice, Lin, Sheng-Chieh, Lisse, Carey, Cicero, Ugo Lo, Lovisari, Lorenzo, McCammon, Dan, McEntee, Sean, Mernier, Francois, Miller, Eric D., Nagai, Daisuke, Negro, Michela, Nelson, Dylan, Ness, Jan-Uwe, Nulsen, Paul, Ogorzalek, Anna, Oppenheimer, Benjamin D., Oskinova, Lidia, Patnaude, Daniel, Pfeifle, Ryan W., Pillepich, Annalisa, Plucinsky, Paul, Pooley, David, Porter, Frederick S., Randall, Scott, Rasia, Elena, Raymond, John, Ruszkowski, Mateusz, Sakai, Kazuhiro, Sarkar, Arnab, Sasaki, Manami, Sato, Kosuke, Schellenberger, Gerrit, Schaye, Joop, Simionescu, Aurora, Smith, Stephen J., Steiner, James F., Stern, Jonathan, Su, Yuanyuan, Sun, Ming, Tremblay, Grant, Truong, Nhut, Tutt, James, Ursino, Eugenio, Veilleux, Sylvain, Vikhlinin, Alexey, Vladutescu-Zopp, Stephan, Vogelsberger, Mark, Walker, Stephen A., Weaver, Kimberly, Weigt, Dale M., Werk, Jessica, Werner, Norbert, Wolk, Scott J., Zhang, Congyao, Zhang, William W., Zhuravleva, Irina, ZuHone, John
The Line Emission Mapper (LEM) is an X-ray Probe for the 2030s that will answer the outstanding questions of the Universe's structure formation. It will also provide transformative new observing capabilities for every area of astrophysics, and to hel
Externí odkaz:
http://arxiv.org/abs/2211.09827
Autor:
Shah, Chintan, Hell, Natalie, Hubbard, Antonia, Gu, Ming Feng, MacDonald, Michael J., Eckart, Megan E., Kelley, Richard L., Kilbourne, Caroline A., Leutenegger, Maurice A., Porter, F. Scott, Brown, Gregory V.
Publikováno v:
The Astrophysical Journal, 914, 34 (2021)
We report measurements of electron-impact excitation cross sections for the strong K-shell n=2-1 transitions in S XV using the LLNL EBIT-I electron beam ion trap, two crystal spectrometers, and the EBIT Calorimeter Spectrometer. The cross sections ar
Externí odkaz:
http://arxiv.org/abs/2106.06493
Publikováno v:
Astronomische Nachrichten 2020; 1-6
Charge exchange (CX) is a semi-resonant recombination process that can lead to spectral line emission in the X-ray band. It occurs in nearly any environment where hot plasma and cold gas interact: in the solar system, in comets and planetary atmosphe
Externí odkaz:
http://arxiv.org/abs/2003.04316
Autor:
Kühn, Steffen, Shah, Chintan, López-Urrutia, José R. Crespo, Fujii, Keisuke, Steinbrügge, René, Stierhof, Jakob, Togawa, Moto, Harman, Zoltán, Oreshkina, Natalia S., Cheung, Charles, Kozlov, Mikhail G., Porsev, Sergey G., Safronova, Marianna S., Berengut, Julian C., Rosner, Michael, Bissinger, Matthias, Ballhausen, Ralf, Hell, Natalie, Park, SungNam, Chung, Moses, Hoesch, Moritz, Seltmann, Jörn, Surzhykov, Andrey S., Yerokhin, Vladimir A., Wilms, Jörn, Porter, F. Scott, Stöhlker, Thomas, Keitel, Christoph H., Pfeifer, Thomas, Brown, Gregory V., Leutenegger, Maurice A., Bernitt, Sven
Publikováno v:
Phys. Rev. Lett. 124, 225001 (2020)
For more than 40 years, most astrophysical observations and laboratory studies of two key soft x-ray diagnostic $2p-3d$ transitions, $3C$ and $3D$, in Fe XVII ions found oscillator strength ratios $f(3C)/f(3D)$ disagreeing with theory, but uncertaint
Externí odkaz:
http://arxiv.org/abs/1911.09707
Autor:
Savin, Daniel Wolf, Babb, James F., Bellan, Paul M., Brogan, Crystal, Cami, Jan, Caselli, Paola, Corrales, Lia, Dominguez, Gerardo, Federman, Steven R., Fontes, Chris J., Freedman, Richard, Gibson, Brad, Golub, Leon, Gorczyca, Thomas W., Hahn, Michael, Hörst, Sarah M., Hudson, Reggie L., Kuhn, Jeffrey, Lawler, James E., Leutenegger, Maurice A., Marler, Joan P., McCarthy, Michael C., McGuire, Brett A., Milam, Stefanie N., Murphy, Nicholas A., Nave, Gillian, Norton, Aimee A., Papol, Anthony, Raymond, John C., Salama, Farid, Sciamma-O'Brien, Ella M., Smith, Randall, Sosolik, Chad, Sousa-Silva, Clara, Stancil, Phillip C., Timmes, Frank, Trimble, Virginia L., Wargelin, Bradford J.
About two generations ago, a large part of AMO science was dominated by experimental high energy collision studies and perturbative theoretical methods. Since then, AMO science has undergone a transition and is now dominated by quantum, ultracold, an
Externí odkaz:
http://arxiv.org/abs/1811.06157