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Dec 18, 2024 | 
mdpi.com | Fei Xie
This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
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Oct 6, 2024 | 
nature.com | Fei Xie
AbstractUsing observation data and numerical simulations, we have demonstrated that the stratospheric Quasi-Biennial Oscillation (QBO) can predict extreme high temperatures (EHTs) in South Asia in June. The vertical structure of the QBO plays a crucial role in this prediction. When the QBO in June shows easterlies (westerlies) at 50 hPa and westerlies (easterlies) at 70 hPa, more (fewer) EHT events occur.
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Aug 7, 2024 | 
mdpi.com | Niccolò Bucciantini |Roger Romani |Fei Xie |Josephine Wong
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
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Jun 17, 2024 | 
nature.com | Jeremy Heyl |Victor Doroshenko |Ilaria Caiazzo |Juri Poutanen |Sergey S Tsygankov |Matteo Bachetti | +62 more
AbstractIn an accreting X-ray pulsar, a neutron star accretes matter from a companion star through an accretion disk. The magnetic field of the rotating neutron star disrupts the inner edge of the disk, funnelling the gas to flow onto the poles on its surface. Hercules X-1 is a prototypical persistent X-ray pulsar about 7 kpc from Earth.
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May 16, 2024 | 
insu.hal.science | Fei Xie |Josephine Wong |Fabio La Monaca |Roger Romani
First Detection of Polarization in X-Rays for PSR B0540-69 and Its Nebula Mots clés Pulsars Pulsar wind nebulae Polarimetry Fichier principal Xie_2024_ApJ_962_92.pdf (2.01 Mo) Télécharger le fichier Origine : Fichiers éditeurs autorisés sur une archive ouverte
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Jan 7, 2024 | 
preprints.org | Jieni Li |Fei Xie |Hongchao Guo
Preprint Article Version 1 This version is not peer-reviewed Version 1 : Received: 5 January 2024 / Approved: 5 January 2024 / Online: 8 January 2024 (01:19:39 CET) Li, J.; Xie, F.; Guo, H. A Statistical Model for Identifying Collusive Bidding Based on Historical Quotations. Preprints 2024, 2024010487. https://doi.org/10.20944/preprints202401.0487.v1 Li, J.; Xie, F.; Guo, H. A Statistical Model for Identifying Collusive Bidding Based on Historical Quotations. Preprints 2024, 2024010487.
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Jul 17, 2023 | 
nature.com | Steven R. Ehlert |Dawoon Kim |Immacolata Donnarumma |Ioannis Liodakis |Iván Agudo |Svetlana G. Jorstad | +71 more
AbstractThe magnetic-field conditions in astrophysical relativistic jets can be probed by multiwavelength polarimetry, which has been recently extended to X-rays. For example, one can track how the magnetic field changes in the flow of the radiating particles by observing rotations of the electric vector position angle Ψ. Here we report the discovery of a ΨX rotation in the X-ray band in the blazar Markarian 421 at an average flux state.
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May 6, 2023 | 
researchgate.net | Fei Xie |Junxue Zhang |Guodong Wu |Hechi Wang
From a global perspective, the ecological sustainability of building systems has always been a hot research topic, especially in China, where the annual amount of new construction is nearly half of the world. The difficulty is making a complete and accurate ecological assessment of the building system. This study has designed and adopted the LCA-Emergy-ANN framework to assess and analyze an airport building system for sustainability.
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Apr 6, 2023 | 
nature.com | Niccolò Bucciantini |Riccardo Ferrazzoli |Matteo Bachetti |Niccolò Di Lalla |Carmelo Sgrò |Nicola Omodei | +51 more
AbstractThe Crab pulsar and its nebula are among the most studied astrophysical systems, and constitute one of the most promising environments where high-energy processes and particle acceleration can be investigated. They are the only objects for which significant X-ray polarization was detected in the past. Here we present the Imaging X-ray Polarimetry Explorer (IXPE) observation of the Crab pulsar and nebula. The total pulsar pulsed emission in the [2–8] keV energy range is unpolarized.
