Results 81 to 90 of about 52,761 (334)

Long-term Quasiperiodicity in LMXB 4U 1636–536

The Astrophysical Journal, 2023
We present the results of the low-mass X-ray binary 4U 1636–536 study. We performed a temporal analysis of all available RXTE/All-Sky Monitor, RXTE/Proportional Counter Array, Swift/Burst Alert Telescope, and MAXI data collected until the middle of 2022.
Mateusz Wiśniewicz, Dorota Gondek-Rosińska, Agnieszka Słowikowska, Andrzej Zdziarski, Agnieszka Janiuk   +4 more
doaj   +1 more source

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

Measurement of neutron star parameters: A review of methods for low-mass X-ray binaries [PDF]

Advances in Space Research, 2010
30 pages, 20 figures, 1 table, An Invited and Refereed Review, will be published in "Advances in Space Research"
openaire   +3 more sources

Nano‐Patterned CuO Nanowire Nanogap Hydrogen Gas Sensor with Voids

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
Sub‐5‐ppb hydrogen (H2) detection and sub‐10‐s response and recovery times are achieved based on nano‐patterned polycrystalline CuO nanowires nanogap gas sensors with voids using electron‐beam lithography and unique annealing processes. Pre‐H2 annealing, void‐generating oxidation, and downscaled nanogap electrodes are key to improving the sensing ...
Muqing Zhao, Ryosuke Nitta, Seiichiro Izawa, Jun‐ichi Yamaura, Yutaka Majima   +4 more
wiley   +1 more source

X-Ray Polarimetry as a Tool to Constrain Orbital Parameters in X-Ray Binaries

The Astrophysical Journal
X-ray binary systems consist of a companion star and a compact object in close orbit. Thanks to their copious X-ray emission, these objects have been studied in detail using X-ray spectroscopy and timing.
John Rankin, Vadim Kravtsov, Fabio Muleri, Juri Poutanen, Frédéric Marin, Fiamma Capitanio, Giorgio Matt, Enrico Costa, Alessandro Di Marco, Sergio Fabiani, Fabio La Monaca, Lorenzo Marra, Paolo Soffitta   +12 more
doaj   +1 more source

Reflection and Timing Study of the Transient Black Hole X-Ray Binary MAXI J1803-298 with NuSTAR

The Astrophysical Journal, 2023
The transient black hole X-ray binary MAXI J1803−298 was discovered on 2021 May 1, as it went into outburst from a quiescent state. As the source rose in flux it showed periodic absorption dips and fit the timing and spectral characteristics of a hard ...
Benjamin M. Coughenour, John A. Tomsick, Guglielmo Mastroserio, James F. Steiner, Riley M. T. Connors, Jiachen Jiang, Jeremy Hare, Aarran W. Shaw, Renee M. Ludlam, A. C. Fabian, Javier A. García, Joel B. Coley   +11 more
doaj   +1 more source

Kinematical studies of the low-mass X-ray binary GR Mus (XB 1254–690) [PDF]

, 2007
We present simultaneous high-resolution optical spectroscopy and X-ray data of theX-ray binary system GRMus (XB1254–690), obtained over a full range of orbitalphases.
A. D. Barnes, J. Casares, R. Cornelisse, P. Charles, D. Steeghs, R. Hynes, K. O’Brien   +6 more
semanticscholar   +1 more source

In Situ Formation of a Melt‐Solid Interface Toward Stable Oxygen Reduction in Protonic Ceramic Fuel Cells

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
Protonic ceramic fuel cells offer a promising route to generate power efficiently but face critical challenges in achieving industrially viable activity and stability at their cathodes in CO2‐containing air. This report proposes a new cathode material design strategy to enable the cathode to be both catalytically active and CO2 tolerant through the ...
Desheng Feng, Mengran Li, Vanessa K. Peterson, Rijia Lin, Anita D'Angelo, Olexandra Marenych, Anya Yago, Dominique Appadoo, Tianjiu Zhu, Muhammad Yazid Bin Zulkifli, Shuai Gao, Yuming Wu, Xiaohe Tian, Xiaoyang Du, Zhonghua Zhu   +14 more
wiley   +1 more source

Optical spectroscopy of the low‐mass X‐ray binary GX 9+9 [PDF]

, 2007
Phase-resolved medium-resolution VLT spectroscopy of the low-mass X-ray binary GX 9+9 has revealed narrow C ill emission lines that move in phase relative to our new estimate of the ephemeris, and show a velocity amplitude of 230 +/not superset of 35 km ...
R. Cornelisse, R. Cornelisse, D. Steeghs, D. Steeghs, J. Casares, P. Charles, A. D. Barnes, R. Hynes, K. O’Brien   +8 more
semanticscholar   +1 more source

FirstINTEGRALobservations of eight persistent neutron star low mass X-ray binaries [PDF]

Astronomy & Astrophysics, 2003
Early results from the INTEGRAL Core Program, for a sample of eight persistently bright neutron star low mass X-ray binaries in the energy range from 5 keV to 200 keV are presented. It is shown that INTEGRAL efficiently detects sources and that spectra may be obtained up to several hundreds of keV by combining data from three of the four INTEGRAL ...
PAIZIS, A., BECKMANN, V., COURVOISIER, T. J. L., VILHU, O., LUTOVINOV, A., EBISAWA, K., HANNIKAINEN, D., CHERNYAKOVA, M., ZURITA HERAS, J. A. , RODRIGUEZ, J. , ZDZIARSKI, A. A. , BAZZANO, A. , KUULKERS, E. , OOSTERBROEK, T., FRONTERA, Filippo, F. , GIMENEZ, A. , GOLDONI, P. , SANTANGELO, A. , PALUMBO, G. G. C.   +20 more
openaire   +5 more sources