Search Results - "Stierhof, Jakob"

High Resolution Photoexcitation Measurements Exacerbate the Long-Standing Fe XVII Oscillator Strength Problem by Kuehn, Steffen, Shah, Chintan, Lopez-Urrutia, Jose R Crespo, Fujii, Keisuke, Steinbruegge, Rene, Stierhof, Jakob, Togawa, Moto, Harman, Zoltan, 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, Joern, Surzhykov, Andrey S, Yerokhin, Vladimir A, Wilms, Joern, Porter, F Scott, Stoehlker, Thomas, Keitel, Christoph H, Pfeifer, Thomas, Brown, Gregory V, Leutenegger, Maurice A, Bernitt, Sven

“…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…”
Get full text

High-Precision Determination of Oxygen-Kalpha Transition Energy Excludes Incongruent Motion of Interstellar Oxygen by Leutenegger, M A, Kuhn, S, Micke, P, Steinbrugge, R, Stierhof, Jakob, Shah, C, Hell, N, Bissinger, M, Hirsch, M, Lang, M, Grafe, C, Wipf, S, Cumbee, R, Betancourt-Martinez, G L, Park, S, Yerokhin, V A, Surzhykov, A S, Stolte, W C, Niskanen, J, Chung, M, Porter, F S, Stohlker, T, Pfeifer, T, Wilms, J, Brown, G V, Lopez-Urrutia, J R Crespo, Bernitt, S

“…We demonstrate a widely applicable technique to absolutely calibrate the energy scale of x-ray spectra with experimentally well-known and accurately calculable…”
Get full text

An in-depth analysis of the variable cyclotron lines in GX 301$-$2 by Zalot, Nicolas, Sokolova-Lapa, Ekaterina, Stierhof, Jakob, Ballhausen, Ralf, Zainab, Aafia, Pottschmidt, Katja, Fürst, Felix, Thalhammer, Philipp, Islam, Nazma, Diez, Camille M, Kretschmar, Peter, Berger, Katrin, Rothschild, Richard, Malacaria, Christian, Pradhan, Pragati, Wilms, Jörn

“…A&A 686, A95 (2024) Context. The High-Mass X-ray Binary (HMXB) system GX 301$-$2 is a persistent source with a well-known variable cyclotron line centered at…”
Get full text

Multiwavelength study of 1eRASS J085039.9-421151 with eROSITA NuSTAR and X-shooter by Zainab, Aafia, Avakyan, Artur, Doroshenko, Victor, Thalhammer, Philipp, Sokolova-Lapa, Ekaterina, Ballhausen, Ralf, Zalot, Nicolas, Stierhof, Jakob, Haemmerich, Steven, Diez, Camille M, Weber, Philipp, Dauser, Thomas, Berger, Katrin, Kretschmar, Peter, Pottschmidt, Katja, Pradhan, Pragati, Islam, Nazma, Maitra, Chandreyee, Coley, Joel B, Blay, Pere, Corbet, Robin H. D, Rothschild, Richard E, Wood, Kent, Santangelo, Andrea, Heber, Ulrich, Wilms, Joern

“…The eROSITA instrument on board Spectrum-Roentgen-Gamma has completed four scans of the X-ray sky, leading to the detection of almost one million X-ray sources…”
Get full text

Fitting strategies of accretion column models and application to the broadband spectrum of Cen X-3 by Thalhammer, Philipp, Bissinger, Matthias, Ballhausen, Ralf, Pottschmidt, Katja, Wolff, Michael T, Stierhof, Jakob, Sokolova-Lapa, Ekaterina, Fürst, Felix, Malacaria, Christian, Gottlieb, Amy, Marcu-Cheatham, Diana M, Becker, Peter A, Wilms, Jörn

“…A&A 656, A105 (2021) Due to the complexity of modeling the radiative transfer inside the accretion columns of neutron star binaries, their X-ray spectra are…”
Get full text

Observation of strong two-electron--one-photon transitions in few-electron ion by Togawa, Moto, Kühn, Steffen, Shah, Chintan, Amaro, Pedro, Steinbrügge, René, Stierhof, Jakob, Hell, Natalie, Rosner, Michael, Fujii, Keisuke, Bissinger, Matthias, Ballhausen, Ralf, Hoesch, Moritz, Seltmann, Jörn, Park, SungNam, Grilo, Filipe, Porter, F. Scott, Santos, José Paulo, Chung, Moses, Stöhlker, Thomas, Wilms, Jörn, Pfeifer, Thomas, Brown, Gregory V, Leutenegger, Maurice A, Bernitt, Sven, López-Urrutia, José R. Crespo

“…Physical Review A 102, 052831 (2020) We resonantly excite the $K$ series of O$^{5+}$ and O$^{6+}$ up to principal quantum number $n=11$ with monochromatic x…”
Get full text

High Resolution Photoexcitation Measurements Exacerbate the Long-Standing Fe XVII Oscillator Strength Problem by 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

“…Phys. Rev. Lett. 124, 225001 (2020) For more than 40 years, most astrophysical observations and laboratory studies of two key soft x-ray diagnostic $2p-3d$…”
Get full text