Results 71 to 80 of about 47,603 (141)

Spatially Resolved Polarization Variation of the Crab Nebula

The Astrophysical Journal
We examined the spatially resolved polarization variations in the Crab Nebula over 2 yr, using observational data from the Imaging X-ray Polarimetry Explorer, and offer key insights into its magnetic field structures and evolution.
Chao Zuo, Fei Xie, Mingyu Ge, Wei Deng, Kuan Liu, Fabio La Monaca, Alessandro Di Marco, Wenhao Wei, Wei Chen   +8 more
doaj   +1 more source

Multiwavelength Observations of Pulsar Wind Nebulae [PDF]

, 2010
The extended nebulae formed as pulsar winds expand into their surroundings provide information about the composition of the winds, the injection history from the host pulsar, and the material into which the nebulae are expanding. Observations from across the electromagnetic spectrum provide constraints on the evolution of the nebulae, the density and ...
arxiv   +1 more source

On the Contribution of Unresolved Pulsars to the Ultra-high-energy Galactic Diffuse Gamma-Ray Emission

The Astrophysical Journal Letters
The ultra-high-energy (UHE) Galactic diffuse gamma-ray emission holds important information on the propagation of cosmic rays in the Galaxy. However, its measurements suffer from a contamination from unresolved sources whose contribution remains unclear.
Samy Kaci, Gwenael Giacinti, Dmitri Semikoz   +2 more
doaj   +1 more source

Multiwavelength Investigation of γ-Ray Source MGRO J1908+06 Emission Using Fermi-LAT, VERITAS and HAWC

The Astrophysical Journal
This paper investigates the origin of the γ -ray emission from MGRO J1908+06 in the GeV–TeV energy band. By analyzing the data collected by the Fermi Large Area Telescope, the Very Energetic Radiation Imaging Telescope Array System, and High Altitude ...
A. Acharyya, C. B. Adams, P. Bangale, J. T. Bartkoske, W. Benbow, J. H. Buckley, J. L. Christiansen, A. J. Chromey, A. Duerr, M. Errando, A. Falcone, Q. Feng, G. M. Foote, L. Fortson, A. Furniss, W. Hanlon, D. Hanna, O. Hervet, C. E. Hinrichs, J. Holder, T. B. Humensky, W. Jin, P. Kaaret, M. Kertzman, D. Kieda, T. K. Kleiner, N. Korzoun, S. Kumar, M. J. Lang, M. Lundy, G. Maier, C. E McGrath, M. J. Millard, J. Millis, C. L. Mooney, P. Moriarty, R. Mukherjee, W. Ning, R. A. Ong, N. Park, M. Pohl, E. Pueschel, J. Quinn, P. L. Rabinowitz, K. Ragan, D. Ribeiro, E. Roache, J. L. Ryan, I. Sadeh, L. Saha, G. H. Sembroski, R. Shang, M. Splettstoesser, A. K. Talluri, J. V. Tucci, J. Valverde, V. V. Vassiliev, A. Weinstein, D. A. Williams, S. L. Wong, J. Woo, The VERITAS Collaboration, R. Alfaro, C. Alvarez, J. C. Arteaga-Velázquez, D. Avila Rojas, R. Babu, E. Belmont-Moreno, A. Bernal, K. S. Caballero-Mora, T. Capistrán, A. Carramiñana, S. Casanova, J. Cotzomi, S. Coutiño de León, E. De la Fuente, D. Depaoli, N. Di Lalla, R. Diaz Hernandez, M. A. DuVernois, C. Espinoza, K. L. Fan, K. Fang, N. Fraija, J. A. García-González, F. Garfias, M. M. González, J. A. Goodman, S. Groetsch, S. Hernández-Cadena, J. Hinton, D. Huang, F. Hueyotl-Zahuantitla, A. Iriarte, S. Kaufmann, D. Kieda, J. Lee, H. León Vargas, A. L. Longinotti, G. Luis-Raya, K. Malone, J. Martínez-Castro, J. A. Matthews, P. Miranda-Romagnoli, J. A. Morales-Soto, E. Moreno, M. Mostafá, L. Nellen, E. G. Pérez-Pérez, C. D. Rho, D. Rosa-González, H. Salazar, A. Sandoval, M. Schneider, J. Serna-Franco, Y. Son, R. W. Springer, O. Tibolla, K. Tollefson, I. Torres, R. Torres-Escobedo, R. Turner, F. Ureña-Mena, E. Varela, X. Wang, H. Zhou, The HAWC Collaboration, J. Eagle, S. Kumar, The Fermi-LAT Collaboration   +129 more
doaj   +1 more source

Observations of Supernova Remnants and Pulsar Wind Nebulae: A VERITAS Key Science Project [PDF]

arXiv, 2009
The study of supernova remnants and pulsar wind nebulae was one of the Key Science Projects for the first two years of VERITAS observations. VERITAS is an array of four imaging Cherenkov telescopes located at the Whipple Observatory in southern Arizona. Supernova remnants are widely considered to be the strongest candidate for the source of cosmic rays
arxiv  

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

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

Pulsar Wind Nebulae in Evolved Supernova Remnants [PDF]

, 2001
John M. Blondin, Roger A. Chevalier, Dargan M. W. Frierson   +2 more
openalex   +1 more source

Pulsar wind nebulae in supernova remnants [PDF]

, 2001
E. van der Swaluw, A. Achterberg, Y. A. Gallant, G. Tóth   +3 more
openalex   +1 more source

A Cacophony of Echoes from Daily Monitoring of the Crab Pulsar at Jodrell Bank

The Astrophysical Journal
Using archival data from the 42-foot telescope at the Jodrell Bank Observatory, we produce daily stacks of aligned giant pulses for the Crab pulsar, to study changes to the daily profiles between 2012 April and 2016 December.
Thierry Serafin Nadeau, Marten H. van Kerkwijk, Cees G. Bassa, Ben W. Stappers, Mitchell B. Mickaliger, Andrew G. Lyne   +5 more
doaj   +1 more source