Results 131 to 140 of about 1,321 (200)

High energy processes in pulsar wind nebulae

Astrophysics and Space Science, 2007
9 pages, 1 figure, Proc.
openaire   +2 more sources

A search for pulsar wind nebulae using pulsar gating

, 1998
Previous searches for radio pulsar wind nebulae (PWN) suggest that only the youngest and most energetic pulsars power PWN. However the selection effects associated with such searches are severe, in that emission from a faint compact PWN will be masked by that from its associated pulsar.
Gaensler, B. M., Stappers, B. W., Frail, D. A., Johnston, S.   +3 more
openaire   +2 more sources

Very high energy emission from pulsar wind Nebulae [PDF]

, 2008
Pulsar wind nebulae (PWNe) are extended structures of shocked relativistic particules powered by a pulsar at very high energy. Interaction between these particules and the surrounding medium produces very high energy photons emission.
Dubois, F.
core  

A Catalog of Pulsar X-Ray Filaments

The Astrophysical Journal
We present the first Chandra X-ray Observatory (CXO) catalog of “pulsar X-ray filaments,” or “misaligned outflows.” These are linear, synchrotron-radiating features powered by ultrarelativistic electrons and positrons that escape from bow shock pulsars ...
Jack T. Dinsmore, Roger W. Romani
doaj   +1 more source

X-Ray Polarization Detection of the Pulsar Wind Nebula in G21.5–0.9 with IXPE

The Astrophysical Journal
We present the X-ray polarization observation of G21.5−0.9, a young Galactic supernova remnant (SNR), conducted with the Imaging X-ray Polarimetry Explorer (IXPE) in 2023 October, with a total livetime of approximately 837 ks.
Niccolò Di Lalla, Nicola Omodei, Niccolò Bucciantini, Jack T. Dinsmore, Nicolò Cibrario, Stefano Silvestri, Josephine Wong, Patrick Slane, Tsunefumi Mizuno, Michela Negro, Roger W. Romani, Riccardo Ferrazzoli, C.-Y. Ng, Miltiadis Michailidis, Yi-Jung Yang, Fei Xie, Martin C. Weisskopf, Philip Kaaret, Iván Agudo, Lucio A. Antonelli, Matteo Bachetti, Luca Baldini, Wayne H. Baumgartner, Ronaldo Bellazzini, Stefano Bianchi, Stephen D. Bongiorno, Raffaella Bonino, Alessandro Brez, Fiamma Capitanio, Simone Castellano, Elisabetta Cavazzuti, Chien-Ting Chen, Stefano Ciprini, Enrico Costa, Alessandra De Rosa, Ettore Del Monte, Laura Di Gesu, Alessandro Di Marco, Immacolata Donnarumma, Victor Doroshenko, Michal Dovčiak, Steven R. Ehlert, Teruaki Enoto, Yuri Evangelista, Sergio Fabiani, Javier A. Garcia, Shuichi Gunji, Jeremy Heyl, Wataru Iwakiri, Svetlana G. Jorstad, Vladimir Karas, Fabian Kislat, Takao Kitaguchi, Jeffery J. Kolodziejczak, Henric Krawczynski, Fabio La Monaca, Luca Latronico, Ioannis Liodakis, Simone Maldera, Alberto Manfreda, Frédéric Marin, Andrea Marinucci, Alan P. Marscher, Herman L. Marshall, Francesco Massaro, Giorgio Matt, Ikuyuki Mitsuishi, Fabio Muleri, Stephen L. O’Dell, Chiara Oppedisano, Alessandro Papitto, George G. Pavlov, Abel Lawrence Peirson, Matteo Perri, Melissa Pesce-Rollins, Pierre-Olivier Petrucci, Maura Pilia, Andrea Possenti, Juri Poutanen, Simonetta Puccetti, Brian D. Ramsey, John Rankin, Ajay Ratheesh, Oliver J. Roberts, Carmelo Sgró, Paolo Soffitta, Gloria Spandre, Douglas A. Swartz, Toru Tamagawa, Fabrizio Tavecchio, Roberto Taverna, Yuzuru Tawara, Allyn F. Tennant, Nicholas E. Thomas, Francesco Tombesi, Alessio Trois, Sergey Tsygankov, Roberto Turolla, Jacco Vink, Kinwah Wu, Silvia Zane   +100 more
doaj   +1 more source

Deriving pulsar pair-production multiplicities from pulsar wind nebulae using H.E.S.S. and LHAASO observations [PDF]

Context. Pulsar wind nebulae (PWNe) dominate the galactic gamma-ray sky at very high energies and they are major contributors to the leptonic cosmic ray flux. However, the question of whether or not pulsars also accelerate ions to comparable energies has
A. M. W. Mitchell, S. T. Spencer
core   +1 more source

Measurement of Neutral Atmosphere Density during the Years of Increasing Solar Activity Using Insight-HXMT Data with the Earth Occultation Technique

The Astrophysical Journal
The density of the Earth’s middle and upper atmosphere is an important parameter in Earth science and plays a critical role in the design, operation, and orbital determination of low Earth orbit spacecraft.
Hao-Hui Zhang, Wang-Chen Xue, Xiao-Bo Li, Shuang-Nan Zhang, Shao-Lin Xiong, Yong Chen, Hai-Tao Li, Li-Ming Song, Ming-Yu Ge, Hai-Sheng Zhao, Yun-Wei Yu   +10 more
doaj   +1 more source

Unraveling the Nature of HAWC J1844–034 with Fermi-LAT Data Analysis and Multiwavelength Modeling

The Astrophysical Journal
The extended ultra-high-energy (UHE) gamma-ray source HAWC J1844–034 is closely associated with two other sources, HAWC J1843–032 and HWC J1846–025. Moreover, other gamma-ray observatories like HESS, LHAASO, and Tibet AS _γ have detected UHE gamma-ray ...
Sovan Boxi, Saptarshi Ghosh, Nayantara Gupta   +2 more
doaj   +1 more source

H.E.S.S. TeV Gamma-ray Sources Associated with Pulsar Wind Nebulae [PDF]

, 2009
In the last five years, the H.E.S.S. system of Cherenkov telescopes has surveyed the Galactic plane at TeV energies with unprecedented sensitivity and detected ~50 Galactic sources.
Dubois, F., Chaves, R., Deil, Christoph, Hinton, J., Tibolla, O., Khelifi, B., Komin, N., Kosack, K., Renaud, M., de Jager, O., Lamanna, G., Gallant, Y., Marandon, V., Förster, A., Hoppe, S., Djannati-Atai, A., for the Hess Collaboration, Dalton, M., Chaves, Ryan, Lemiere, A., Glück, B., Deil, C., Keogh, D.   +22 more
core  

The GeV γ-Ray Emission from the Composite Supernova Remnant CTB 87

The Astrophysical Journal
We report the GeV γ -ray emission around the composite supernova remnant (SNR) CTB 87 with more than 16 yr of PASS 8 data recorded by the Fermi Large Area Telescope. Two separate point sources with different GeV spectra are identified in this region: one
Yuliang Xin, Jian Tang, Weixiong Ding, Xi Liu, Yunfeng Zhang, Xiaolei Guo   +5 more
doaj   +1 more source