Results 111 to 120 of about 6,506 (234)

Modelling the evolution of pulsar wind nebulae

Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie, 2013
Using numerical models, the influence of factors such as agnetic field strength on the evolution of pulsar wind ebulae can be determined. This includes the morphological evolution as well as the evolution of the type of light emitted and the corresponding intensity.
openaire   +4 more sources

Resolving the Crab pulsar wind nebula at teraelectronvolt energies [PDF]

Nature Astronomy, 2019
23 pages, 5 ...
A. Dmytriiev, D. Jankowsky, H. Iwasaki, D. Zaborov, M. Capasso, S. Raab, T. Chand, A. Jacholkowska, R. Simoni, N. Tsuji, Stefan Wagner, T. Tavernier, T. Vuillaume, Mohanraj Senniappan, Celine Armand, Werner Hofmann, Axel Donath, Michael Backes, Michael Backes, C. Hoischen, F. Ait Benkhali, R. J. White, Robert Wagner, R. Marx, G. Hermann, J.-P. Ernenwein, R. Moderski, R. Tuffs, Andrea Santangelo, J. Zorn, J. Devin, C. Arcaro, M. Kraus, A.S. Seyffert, Sabrina Casanova, H. Odaka, D. Tiziani, J. Veh, M. Seglar-Arroyo, C. Steppa, M. Renaud, M. Büchele, G. Emery, S. Caroff, S. Gabici, S. Bonnefoy, Gianluca Giavitto, S. Nakashima, Michael Punch, Jacco Vink, U. Katz, Christopher J. Moore, J. Hahn, Konrad Bernlöhr, A. Djannati-Ataï, J. King, Heinrich J. Völk, A.A. Zdziarski, B. Peyaud, Yvonne Becherini, Ruizhi Yang, F. Voisin, Monica Barnard, Carlo Romoli, A. Fiasson, L. Oakes, M. Tsirou, A. W. Chen, L. O'c. Drury, M. Lemoine-Goumard, G. Lamanna, Frank M. Rieger, M. Füßling, C. Perennes, Natalia Żywucka, D. Glawion, M. Holler, E. Moulin, M. Haupt, Reinhard Schlickeiser, Alison Mitchell, M. Ostrowski, E. O. Angüner, Lukasz Stawarz, Thomas Murach, L. Dirson, M. Katsuragawa, A. Priyana Noel, D. Gottschall, S. Eschbach, P. T. O'Brien, A. Marcowith, I.D. Davids, L. Rinchiuso, W. Kluźniak, R. D. Parsons, A. Ziegler, Julien Lefaucheur, P.J. Meintjes, G. Fontaine, S. Chandra, J.-P. Lenain, Stefan Funk, F. Gaté, F. Jankowsky, Tomasz Bulik, M.-H. Grondin, K. Egberts, V. Doroshenko, F. Schüssler, Christo Venter, Christoph Deil, Ullrich Schwanke, I. Jung-Richardt, Andreas Quirrenbach, S. Saito, S. Klepser, V. Poireau, J. Bolmont, G. Heinzelmann, M. Panter, T. Lohse, J. Lau, C. Stegmann, H. Ndiyavala, Dmitry Khangulyan, Matteo Cerruti, V. Sahakian, K. Kosack, Nachiketa Chakraborty, M. Arakawa, M. Arakawa, P. Vincent, Felix Aharonian, S. Fegan, M. Böttcher, Nu. Komin, G. Maurin, S. Colafrancesco, R. Blackwell, V. Marandon, Y.A. Gallant, B. van Soelen, Ruben Lopez-Coto, S. Schwemmer, A. Schulz, A. Zech, R. Rauth, E. Ruiz-Velasco, Gavin Rowell, Jim Hinton, D. J. van der Walt, J. Becker Tjus, H. M. Schutte, Tim Holch, Regis Terrier, R. C. G. Chaves, G. Vasileiadis, E. Leser, A. Reimer, I. Oya, K. Shiningayamwe, Denys Malyshev, Dieter Horns, R. Steenkamp, H. Abdalla, R. Zanin, G. Pühlhofer, Francois Brun, J.F. Glicenstein, B. Rudak, Catherine Boisson, M. Mohamed, D. A. Prokhorov, Olaf Reimer, D. Huber, A. Carosi, C. Trichard, A.M. Taylor, A. Lemière, M. Tluczykont, M. Bryan, L. Mohrmann, C. van Eldik, H. Yoneda, I. Shilon, Helene Sol, F. Niederwanger, D. A. Sanchez, Heike Prokoph, J. Bregeon, B. Khélifi, Pierre Brun, C. Mariaud, Q. Piel, G. Martí-Devesa, B. Condon, S. Pita, T. Bylund, Manami Sasaki, D. Berge, M. de Naurois, A. Wierzcholska, Jacek Niemiec, Zorawar Wadiasingh, M. Zacharias, P. Bordas   +206 more
openaire   +11 more sources

Radio Observation of the Pulsar Wind Nebula in Supernova Remnant G11.2−0.3

The Astrophysical Journal
Pulsar wind nebulae (PWNe) are important sources for understanding galactic high-energy processes, but it is controversial until now how high-energy particles in PWNe are accelerated and transported. Lacking radio counterparts of X-ray PWNe (the proposed
Yu Zhang, Yihan Liu, C.-Y. Ng, Mallory S. E. Roberts, Lili Yang   +4 more
doaj   +1 more source

Halo fraction in TeV-bright pulsar wind nebulae

Astronomy & Astrophysics, 2020
The discovery of extended TeV emission around the Geminga and PSR B0656+14 pulsars, with properties consistent with free particle propagation in the interstellar medium (ISM), has led to the suggestion of “TeV halos” as a separate source class, which is ...
G. Giacinti, A. Mitchell, R. López-Coto, V. Joshi, R. Parsons, J. Hinton   +5 more
semanticscholar   +1 more source

Future X-ray Polarimetry of Relativistic Accelerators: Pulsar Wind Nebulae and Supernova Remnants

Galaxies, 2018
Supernova remnants (SNRs) and pulsar wind nebulae (PWNs) are among the most significant sources of non-thermal X-rays in the sky, and the best means by which relativistic plasma dynamics and particle acceleration can be investigated.
Niccolò Bucciantini
doaj   +1 more source

MHD models of Pulsar Wind Nebulae [PDF]

, 2010
Pulsar Wind Nebulae (PWNe) are bubbles or relativistic plasma that form when the pulsar wind is confined by the SNR or the ISM. Recent observations have shown a richness of emission features that has driven a renewed interest in the theoretical modeling of these objects.
openaire   +3 more sources

Anticorrelation Between Flux and Photon Index of Hard-X-Ray Emission from the Crab

The Astrophysical Journal
Using Swift Burst Alert Telescope event-mode data during gamma-ray burst occurrences, we conduct spectral analysis for the Crab system. From 38 good observations, which span a period of 18 yr from 2006 to 2023, we find that the Crab’s X-ray flux not only
Koothodil Abhijith Augustine, Hsiang-Kuang Chang   +1 more
doaj   +1 more source

Investigating the Anticorrelation between Photon Index and Flux of the Crab Using RXTE and NuSTAR

The Astrophysical Journal
We present a systematic study of the recently reported anticorrelation between X-ray flux and photon index (Γ) in the Crab Nebula, using archival Rossi X-Ray Timing Explorer (RXTE) Proportional Counter Array (3–50 keV), RXTE High Energy X-ray Timing ...
Debjit Chatterjee, Hsiang-Kuang Chang, Dipak Debnath, Koothodil Abhijith Augustine, Tzu-Hsuan Lin   +4 more
doaj   +1 more source

Lepton Acceleration in Pulsar Wind Nebulae [PDF]

, 2010
Pulsar Wind Nebulae (PWNe) act as calorimeters for the relativistic pair winds emanating from within the pulsar light cylinder. Their radiative dissipation in various wavebands is significantly different from that of their pulsar central engines: the broadband spectra of PWNe possess characteristics distinct from those of pulsars, thereby demanding a ...
openaire   +3 more sources

The IXPE Science of Pulsars and Their Nebulae

Galaxies
Pulsars (PSRs) and Pulsar Wind Nebulae (PWNe) form some of the most interesting high-energy astrophysical systems. Their prominent synchrotron emission makes them ideal candidates for polarimetry.
Niccolò Bucciantini, Roger W. Romani, Fei Xie, Josephine Wong   +3 more
doaj   +1 more source