| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Sharma, Rahul
RWTH Aachen University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Quantitative microwave imaging using deep learning network guided by plane wave equationcitations
- 2024Simulation of wire metal transfer in the cold metal transfer (CMT) variant of gas metal arc welding using the smoothed particle hydrodynamics (SPH) approachcitations
- 2024Tuning the electronic structure of monolayer Mo S 2 towards metal like via vanadium dopingcitations
- 2024Large-Scale Direct Growth of Monolayer MoS2 on Patterned Graphene for van der Waals Ultrafast Photoactive Circuitscitations
- 2024Tuning the electronic structure of monolayer MoS2 towards metal like via vanadium dopingcitations
- 2023AstroSat and NuSTAR observations of XTE J1739-285 during the 2019-2020 outburstcitations
- 2022Synthesis and Investigation of Mechanical Behavior of Aluminum Oxide/Silicon Carbide Filled Bi-directional Woven E-glass Fiber Reinforcement Epoxy Polymer Compositescitations
- 2020Spectroscopic correlation of chalcogen defects in atomically thin MoS2(1−x)Se2x alloyscitations
- 2019On the synthesis of morphology-controlled transition metal dichalcogenides via chemical vapor deposition for electrochemical hydrogen generationcitations
- 2019Manipulating the melt propagation of short arc gas metal arc welding with diode lasers <1 kW for improvement in flexibility and process robustnesscitations
- 2017Thiourea functionalized β-cyclodextrin as green reducing and stabilizing agent for silver nanocomposites with enhanced antimicrobial and antioxidant propertiescitations
- 2017Comparison of submerged arc welding process modification influence on thermal strain by in-situ neutron diffractioncitations
- 2016Graphene-Based Composites and Hybrids for Water Purification Applicationscitations
- 2016Graphene-Based Composites and Hybrids for Water Purification Applicationscitations
- 2016Chitosan-thiomer stabilized silver nano-composites for antimicrobial and antioxidant applicationscitations
Places of action
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article
AstroSat and NuSTAR observations of XTE J1739-285 during the 2019-2020 outburst
Abstract
We report results from a study of XTE J1739-285, a transient neutron star low mass X-ray binary observed with AstroSat and NuSTAR during its 2019-2020 outburst. We detected accretion-powered X-ray pulsations at 386 Hz during very short intervals (0.5-1 s) of X-ray flares. These flares were observed during the 2019 observation of XTE J1739-285. During this observation, we also observed a correlation between intensity and hardness ratios, suggesting an increase in hardness with the increase in intensity. Moreover, a thermonuclear X-ray burst detected in our AstroSat observation during the 2020 outburst revealed the presence of coherent burst oscillations at 383 Hz during its decay phase. The frequency drift of 3 Hz during X-ray burst can be explained with r modes. Thus, making XTE J1739-285 belong to a subset of NS-LMXBs which exhibit both nuclear- and accretion-powered pulsations. The power density spectrum created using the AstroSat-laxpc observations in 2020 showed the presence of a quasi-periodic oscillation at ∼0.83 Hz. Our X-ray spectroscopy revealed significant changes in the spectra during the 2019 and 2020 outburst. We found a broad iron line emission feature in the X-ray spectrum during the 2020 observation, while this feature was relatively narrow and has a lower equivalent width in 2019, when the source was accreting at higher rates than 2020. Hard X-ray tail was observed during the 2019 observations, indicating the presence of non-thermal component in the X-ray spectra.