Results 1 to 10 of about 8,780 (169)

Fermi-LAT Search for Pulsar Wind Nebulae around gamma-ray Pulsars [PDF]

, 2010
The high sensitivity of the Fermi-LAT (Large Area Telescope) offers the first opportunity to study faint and extended GeV sources such as pulsar wind nebulae (PWNe). After one year of observation the LAT detected and identified three pulsar wind nebulae:
A. A. Moiseev, A. Bouvier, A. Brez, A. Chekhtman, A. de Angelis, A. de Luca, A. G. Lyne, A. K. Harding, A. Makeev, A. Morselli, A. Noutsos, A. Okumura, A. P. Waite, A. Reimer, A. S. Johnson, A. Sander, A. Tramacere, A. Van Etten, A. W. Borgland, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Acciari, Albert, Aliu, Anderhub, Atwood, B. Berenji, B. L. Winer, Bai, Bednarek, Blondin, C. C. Cheung, C. Cecchi, C. D. Dermer, C. Favuzzi, C. Monte, C. Sgrò, Camilo, Camilo, Cheng, Chevalier, Cordes, D'Amico, D. A. Smith, D. Bastieri, D. Dumora, D. F. Torres, D. Hadasch, D. J. Suson, D. J. Thompson, D. Paneque, D. Parent, Dame, de Jager, de Jager, Djannati-Atai, Dyks, E. Bonamente, E. Charles, E. D. Bloom, E. do Couto e Silva, E. Hays, E. J. Siskind, E. Nuss, F. Camilo, F. de Palma, F. Gargano, F. Giordano, F. Longo, F. Loparco, F. Piron, Fujita, Fukui, G. A. Caliandro, G. Barbiellini, G. Godfrey, G. Hobbs, G. Jóhannesson, G. Spandre, G. Theureau, G. Tosti, Gelfand, Green, H. F.-W. Sadrozinski, H. Katagiri, H. Takahashi, Halpern, Halpern, Hartman, I. A. Grenier, I. Cognard, I. V. Moskalenko, J. B. Thayer, J. Ballet, J. Bregeon, J. Chiang, J. Cohen-Tanugi, J. Conrad, J. E. Grove, J. E. McEnery, J. F. Ormes, J. G. Thayer, J. H. Panetta, J. Kataoka, J. Knödlseder, J. Lande, J. M. Casandjian, J. Mehault, J. Ripken, J. Vandenbroucke, K. Bechtol, K. Hayashi, K. S. Wood, Kaaret, Kniffen, Kothes, L. Baldini, L. Guillemot, L. Latronico, L. Tibaldo, M. Ackermann, M. Ajello, M. Brigida, M. E. Monzani, M. Frailis, M. Giroletti, M. Keith, M. Kerr, M. Kramer, M. Kuss, M. Lemoine-Goumard, M. Marelli, M. N. Lovellette, M. N. Mazziotta, M. Naumann-Godo, M. Pepe, M. Pesce-Rollins, M. Razzano, M. S. Strickman, M. Ziegler, M.-H. Grondin, Manchester, Morsi, Muslimov, N. Giglietto, N. Rea, N. Vilchez, Ng, O. Reimer, P. A. Caraveo, P. Bruel, P. D. Smith, P. F. Michelson, P. Fusco, P. Giommi, P. L. Nolan, P. Lubrano, P. M. Saz Parkinson, P. S. Drell, P. S. Ray, P. Spinelli, P. Wang, P. Weltevrede, Pavlov, Porter, Press, R. A. Cameron, R. Bellazzini, R. Buehler, R. Claus, R. Dubois, R. E. Hughes, R. Rando, R. W. Romani, Ray, Roberts, Romani, Romero, S. Buson, S. Ciprini, S. E. Thorsett, S. Funk, S. Germani, S. Guiriec, S. Johnston, S. M. Ransom, S. Murgia, S. Rainò, S. Ritz, S. W. Digel, S.-H. Lee, Safi-Harb, Saz Parkinson, Slane, Slane, Slane, T. A. Porter, T. Glanzman, T. Kamae, T. L. Usher, T. Mizuno, T. Nakamori, T. Ohsugi, T. Reposeur, T. Takahashi, T. Tanaka, T. Uehara, T. Ylinen, Theureau, Tian, V. Pelassa, V. Vasileiou, V. Vitale, Van Etten, Venter, W. B. Focke, W. N. Johnson, Ward, Weiler, Whiteoak, Y. Fukazawa, Y. Hanabata, Y. Uchiyama, Yadigaroglu, Z. Yang, Ö. Çelik   +239 more
core   +11 more sources

Why (Still) Studying Turbulence in Fluids and Plasmas?

Perspectives of Earth and Space Scientists, Volume 4, Issue 1, December 2023., 2023
Abstract Turbulence, a captivating and intricate phenomenon, continues to attract researchers across diverse scientific disciplines. Despite considerable efforts, turbulence remains a fascinating challenge and stands as one of the unsolved enigmas in classical physics.
Tommaso Alberti, Roberto Benzi, Vincenzo Carbone   +2 more
wiley   +1 more source

Long‐Term Density Trend in the Mesosphere and Lower Thermosphere From Occultations of the Crab Nebula With X‐Ray Astronomy Satellites

Journal of Geophysical Research: Space Physics, Volume 128, Issue 2, February 2023., 2023
Abstract We present long‐term density trends of the Earth's upper atmosphere at altitudes between 71 and 116 km, based on atmospheric occultations of the Crab Nebula observed with X‐ray astronomy satellites, ASCA, RXTE, Suzaku, NuSTAR, and Hitomi. The combination of the five satellites provides a time period of 28 years from 1994 to 2022.
Satoru Katsuda, Teruaki Enoto, Andrea N. Lommen, Koji Mori, Yuko Motizuki, Motoki Nakajima, Nathaniel C. Ruhl, Kosuke Sato, Gunter Stober, Makoto S. Tashiro, Yukikatsu Terada, Kent S. Wood   +11 more
wiley   +1 more source

A search for runaway stars in 12 Galactic supernova remnants

Astronomische Nachrichten, Volume 342, Issue 3, Page 553-577, March 2021., 2021
Runaway stars can result from core‐collapse supernovae in multiple stellar systems. If the supernova disrupts the system, the companion is ejected with its former orbital velocity. A clear identification of a runaway star can yield the time and place of the explosion, as well as orbital parameters of the pre‐supernova binary system.
Oliver Lux, Ralph Neuhäuser, Markus Mugrauer, Richard Bischoff   +3 more
wiley   +1 more source

Pulsar wind nebulae in supernova remnants [PDF]

, 2000
A spherically symmetric model is presented for the interaction of a pulsar wind with the associated supernova remnant. This results in a pulsar wind nebula whose evolution is coupled to the evolution of the surrounding supernova remnant.
Achterberg, A., Gallant, Y. A., Tóth, G., van der Swaluw, E.   +3 more
core   +2 more sources

Supernova remnants in nearby galaxies

Astronomische Nachrichten, Volume 341, Issue 2, Page 156-162, February 2020., 2020
Abstract Supernova remnants (SNRs) are the aftermath of stellar explosions, which inject large amounts of energy into the interstellar medium (ISM), carving out new structures and transferring kinetic energy to the ISM. They also act as recycling centers, which return elements processed in stars to the ISM, and cosmic particle accelerators.
Manami Sasaki
wiley   +1 more source

The Complex Wind Torus and Jets of PSR B1706-44 [PDF]

, 2005
We report on Chandra ACIS imaging of the pulsar wind nebula (PWN) of the young Vela-like PSR B1706-44, which shows the now common pattern of an equatorial wind and polar jets.
C.‐Y. Ng, Chadwick P. M., Frater R. H., Gotthelf E. V., Johnston S., Maeder A., Nicastro L., Richard Dodson, Roger W. Romani, Walter Brisken, Zavlin V. E.   +10 more
core   +2 more sources

Magnetic Reconnection in the Space Sciences: Past, Present, and Future

Journal of Geophysical Research: Space Physics, Volume 125, Issue 2, February 2020., 2020
Abstract Magnetic reconnection converts, often explosively, stored magnetic energy to particle energy in space and in the laboratory. Through processes operating on length scales that are tiny, it facilitates energy conversion over dimensions of, in some cases, hundreds of Earth radii.
M. Hesse, P. A. Cassak
wiley   +1 more source

X-ray Emission from the Guitar Nebula [PDF]

, 1997
We have detected weak soft X-ray emission from the Pulsar Wind Nebula trailing the high velocity star PSR 2224+65 (the `Guitar Nebula'). This X-ray flux gives evidence of \gamma~10^7 eV particles in the pulsar wind and constrains the properties of the ...
Cordes, J M, Romani, R W, Yadigaroglu, I A   +2 more
core   +3 more sources

A new approach to generate a catalogue of potential historical novae

Astronomische Nachrichten, Volume 341, Issue 1, Page 79-98, January 2020., 2020
Abstract Ancient Chinese, Korean, and Vietnamese observers left us records of celestial sightings, the so‐called “guest stars” dated up to ∼2500 years ago. Their identification with modern observable targets could open interesting insights into the long‐term behavior of astronomical objects, as shown by the successful identification of eight galactic ...
Susanne M. Hoffmann, Nikolaus Vogt, Philipp Protte   +2 more
wiley   +1 more source