Search Results - "Kuehnel, Matthias"

Towards a Unified View of Inhomogeneous Stellar Winds in Isolated Supergiant Stars and Supergiant High Mass X-Ray Binaries by Martínez-Núñez, Silvia, Kretschmar, Peter, Bozzo, Enrico, Oskinova, Lidia M., Puls, Joachim, Sidoli, Lara, Sundqvist, Jon Olof, Blay, Pere, Falanga, Maurizio, Fürst, Felix, Gímenez-García, Angel, Kreykenbohm, Ingo, Kühnel, Matthias, Sander, Andreas, Torrejón, José Miguel, Wilms, Jörn

“…Massive stars, at least ∼ 10 times more massive than the Sun, have two key properties that make them the main drivers of evolution of star clusters, galaxies,…”
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Discovery and modelling of a flattening of the positive cyclotron line/luminosity relation in GX 304−1 with RXTE by Rothschild, Richard E., Kühnel, Matthias, Pottschmidt, Katja, Hemphill, Paul, Postnov, Konstantin, Gornostaev, Mikhail, Shakura, Nikolai, Fürst, Felix, Wilms, Jörn, Staubert, Rüdiger, Klochkov, Dmitry

“…Abstract The Rossi X-ray Timing Explorer (RXTE) observed four outbursts of the accreting X-ray binary transient source, GX 304−1 in 2010 and 2011. We present…”
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Spectral and Timing Analysis of the Accretion-powered Pulsar 4U 1626-67 Observed with Suzaku and NuSTAR by Iwakiri, Wataru B., Pottschmidt, Katja, Falkner, Sebastian, Hemphill, Paul B., Fürst, Felix, Nishimura, Osamu, Schwarm, Fritz-Walter, Wolff, Michael T., Marcu-Cheatham, Diana M., Chakrabarty, Deepto, Tomsick, John A., Wilson-Hodge, Colleen A., Bissinger Kühnel, Matthias, Terada, Yukikatsu, Enoto, Teruaki, Wilms, Jörn

“…We present an analysis of the spectral shape and pulse profile of the accretion-powered pulsar 4U 1626−67 observed with Suzaku and Nuclear Spectroscopic…”
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Predicting the Resonance Frequencies in Geometric Nonlinear Actuated MEMS by Putnik, Martin, Sniegucki, Mateusz, Cardanobile, Stefano, Kuhnel, Matthias, Kehrberg, Steven, Mehner, Jan E.

“…The operation range of today's micro-electromechanical systems (MEMS) continues to enter the geometric nonlinear regime due to miniaturization and performance…”
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The First NuSTAR Observation of 4U 1538-522: Updated Orbital Ephemeris and a Strengthened Case for an Evolving Cyclotron Line Energy by Hemphill, Paul B., Rothschild, Richard E., Cheatham, Diana M., Fürst, Felix, Kretschmar, Peter, Kühnel, Matthias, Pottschmidt, Katja, Staubert, Rüdiger, Wilms, Jörn, Wolff, Michael T.

“…We have performed a comprehensive spectral and timing analysis of the first NuSTAR observation of the high-mass X-ray binary 4U 1538−522. The observation…”
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Advances in Understanding High-Mass X-ray Binaries with INTEGRAL and Future Directions by Kretschmar, Peter, Furst, Felix, Sidoli, Lara, Bozzo, Enrico, Alfonso-Garzon, Julia, Bodaghee, Arash, Chaty, Sylvain, Chernyakova, Masha, Ferrigno, Carlo, Manousakis, Antonios, Negueruela, Ignacio, Postnov, Konstantin, Paizis, Adamantia, Reig, Pablo, Rodes-Roca, Jose Joaquın, Tsygankov, Sergey, Bird, Antony J., Kuhnel, Matthias Bissinger ne’, Blay, Pere, Caballero, Isabel, Coe, Malcolm J., Domingo, Albert, Doroshenko, Victor, Ducci, Lorenzo, Falanga, Maurizio, Grebenev, Sergei A., Grinberg, Victoria, Hemphill, Paul, Kreykenbohm, Ingo, Fritz, Sonja Kreykenbohm ne’, Li, Jian, Lutovinov, Alexander A., Martınez-Nunez, Silvia, Mas-Hesse, J. Miguel, Masetti, Nicola, McBride, Vanessa A., Neronov, Andrii, Pottschmidt, Katja, Rodriguez, Jerome, Romano, Patrizia, Rothschild, Richard E., Santangelo, Andrea, Sguera, Vito, Staubert, Rudiger, Tomsick, John A., Torrejon, Jose Miguel, Torres, Diego F., Walter, Roland, Wilms, Jorn, Wilson-Hodge, Colleen A., Zhang, Shu

“…High mass X-ray binaries are among the brightest X-ray sources in the Milky Way, as well as in nearby Galaxies. Thanks to their highly variable emissions and…”
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MEASUREMENTS OF CYCLOTRON FEATURES AND PULSE PERIODS IN THE HIGH-MASS X-RAY BINARIES 4U 1538–522 AND 4U 1907+09 WITH THE INTERNATIONAL GAMMA-RAY ASTROPHYSICS LABORATORY by Hemphill, Paul B., Rothschild, Richard E., Caballero, Isabel, Pottschmidt, Katja, Kühnel, Matthias, Fürst, Felix, Wilms, Jörn

“…We present a spectral and timing analysis of International Gamma-Ray Astrophysics Laboratory (INTEGRAL) observations of two high-mass X-ray binaries, 4U…”
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OBSERVATIONS OF THE HIGH-MASS X-RAY BINARY A 0535+26 IN QUIESCENCE by Rothschild, Richard, Markowitz, Alex, Hemphill, Paul, Caballero, Isabel, POTTSCHMIDT, KATJA, Kuhnel, Matthias, Wilms, Jorn, Furst, Felix, Doroshenko, Victor, Camero-Arranz, Ascension

“…We have analyzed three observations of the high-mass X-ray binary A 0535+26 performed by the Rossi X-Ray Timing Explorer (RXTE) three, five, and six months…”
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Time-resolved study of crystallization in deeply cooled liquid parahydrogen by Kühnel, Matthias, Fernández, José M, Tejeda, Guzmán, Kalinin, Anton, Montero, Salvador, Grisenti, Robert E

“…We present real-time measurements of the crystallization process occurring in liquid para-hydrogen (para-H(2)) quenched to ≈0.65T(m) (T(m)=13.8   K is the…”
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THE TRANSIENT ACCRETING X-RAY PULSAR XTE J1946+274: STABILITY OF X-RAY PROPERTIES AT LOW FLUX AND UPDATED ORBITAL SOLUTION by Marcu-Cheatham, Diana M., Pottschmidt, Katja, Kühnel, Matthias, Müller, Sebastian, Falkner, Sebastian, Caballero, Isabel, Finger, Mark H., Jenke, Peter J., Wilson-Hodge, Colleen A., Fürst, Felix, Grinberg, Victoria, Hemphill, Paul B., Kreykenbohm, Ingo, Klochkov, Dmitry, Rothschild, Richard E., Terada, Yukikatsu, Enoto, Teruaki, Iwakiri, Wataru, Wolff, Michael T., Becker, Peter A., Wood, Kent S., Wilms, Jörn

“…ABSTRACT We present a timing and spectral analysis of the X-ray pulsar XTE J1946+274 observed with Suzaku during an outburst decline in 2010 October and…”
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THE GOODNESS OF SIMULTANEOUS FITS IN ISIS by Kühnel, Matthias, Falkner, Sebastian, Grossberger, Christoph, Ballhausen, Ralf, Dauser, Thomas, Schwarm, Fritz-Walter, Kreykenbohm, Ingo, Nowak, Michael A., Pottschmidt, Katja, Ferrigno, Carlo, Rothschild, Richard E., Martínez-Núñez, Silvia, Torrejón, José Miguel, Fürst, Felix, Klochkov, Dmitry, Staubert, Rüdiger, Kretschmar, Peter, Wilms, Jörn

“…In a previous work, we introduced a tool for analyzing multiple datasets simultaneously, which has been implemented into ISIS. This tool was used to fit many…”
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Luminosity dependent accretion state change in GRO J1008–57 by Kühnel, Matthias, Müller, Sebastian, Kreykenbohm, Ingo, Fürst, Felix, Pottschmidt, Katja, Rothschild, Richard E., Caballero, Isabel, Grinberg, Victoria, Schönherr, Gabriele, Shrader, Chris, Klochkov, Dmitry, Staubert, Rüdiger, Ferrigno, Carlo, Torrejón, José-Miguel, Martínez-Núñez, Silvia, Wilms, Jörn

“…In a former publication, we have analyzed the transient neutron star X-ray binary GRO J1008–57 using all available RXTE-, Swift-, and Suzaku-data. As we have…”
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Observation of crystallization slowdown in supercooled parahydrogen and orthodeuterium quantum liquid mixtures by Kühnel, Matthias, Fernández, José M., Tramonto, Filippo, Tejeda, Guzmán, Moreno, Elena, Kalinin, Anton, Nava, Marco, Galli, Davide E., Montero, Salvador, Grisenti, Robert E.

“…We report a quantitative experimental study of the crystallization kinetics of supercooled quantum liquid mixtures of parahydrogen (pH sub(2)) and…”
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Simulation methods for generating reduced order models of MEMS sensors with geometric nonlinear drive motion by Putnik, Martin, Cardanobile, Stefano, Sniegucki, Mateusz, Kehrberg, Steven, Kuehnel, Matthias, Degenfeld-Schonburg, Peter, Nagel, Cristian, Mehner, Jan

“…We compare different simulation methods for the development of reduced order models (ROM) that feature a geometric nonlinear drive motion in a MEMS device. We…”
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Incorporating geometrical nonlinearities in reduced order models for MEMS gyroscopes by Putnik, Martin, Sniegucki, Mateusz, Cardanobile, Stefano, Kehrberg, Steven, Kuehnel, Matthias, Nagel, Cristian, Degenfeld-Schonburg, Peter, Mehner, Jan

“…We present a method to incorporate geometric nonlinearities in a linear reduced order model of a MEMS gyroscope. We use a prestressed modal analysis in ANSYS…”
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A static approach for the frequency shift of parasitic excitations in MEMS gyroscopes with geometric nonlinear drive mode by Putnik, Martin, Cardanobile, Stefano, Kehrberg, Steven, Nagel, Cristian, Degenfeld-Schonburg, Peter, Kuehnel, Matthias, Mehner, Jan

“…We present a method to estimate the frequency shift of parasitic modes in MEMS gyroscopes with respect to the displacement of the drive mode. Our method is…”
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Spectral and Timing Analysis of the accretion-powered pulsar 4U 1626-67 observed with Suzaku and NuSTAR by Iwakiri, Wataru B, Pottschmidt, Katja, Falkner, Sebastian, Hemphill, Paul B, Fuerst, Felix, Nishimura, Osamu, Schwarm, Fritz-Walter, Wolff, Michael T, Marcu-Cheatham, Diana M, Chakrabarty, Deepto, Tomsick, John A, Wilson-Hodge, Colleen A, Kuehnel, Matthias, Terada, Yukikatsu, Enoto, Teruaki, Wilms, Joern

“…We present an analysis of the spectral shape and pulse profile of the accretion-powered pulsar 4U 1626-67 observed with Suzaku and NuSTAR during a spin-up…”
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Discovery and Modeling of a Flattening of the Positive Cyclotron Line/Luminosity Relation in GX 304-1 with RXTE by Rothschild, Richard E, Kuehnel, Matthias, Pottschmidt, Katja, Hemphill, Paul, Postnov, Konstantin, Gornostaev, Mikhail, Shakura, Nikolai, Fuerst, Felix, Wilms, Joern, Staubert, Ruediger, Klochkov, Dmitry

“…The RXTE observed four outbursts of the accreting X-ray binary transient source, GX 304-1 in 2010 and 2011. We present results of detailed 3-100 keV spectral…”
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Measurements of Cyclotron Features and Pulse Periods in the High-Mass X-Ray Binaries 4U 1538-522 and 4U 1907+09 with INTEGRAL by Hemphill, Paul, Rothschild, Richard, Caballero, Isabel, Pottschmidt, Katja, Kuehnel, Matthias, Fuerst, Felix, Wilms, Joern

“…We present a spectral and timing analysis of INTEGRAL observations of two high mass X-ray binaries, 4U 1538-522 and 4U 1907+09. Our timing measurements for 4U…”
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Observations of The High Mass X-ray Binary A0535+26 in Quiescence by Rothschild, Richard, Markowitz, Alex, Hemphill, Paul, Caballero, Isabel, Pottschmidt, Katja, Kuehnel, Matthias, Wilms, Joern, Fuerst, Felix, Doroshenko, Victor, Camero-Arranz, Ascension

“…We have analyzed 3 observations of the High Mass X-ray Binary A0535+26 performed by the Rossi X-ray Timing Explorer (RXTE) 3, 5, and 6 months after the last…”
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