Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Interstellar scattering"'
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 2, p 174 (2024)
The pitch-angle diffusion coefficient (PADC) quantifies the effect of pitch-angle scattering on charged particles propagating through turbulent magnetic fields and is a key ingredient in understanding the diffusion of these particles along the backgr
Externí odkaz:
https://doaj.org/article/b6567f4cc08546e7a267667c8fa080ee
Autor:
Sofia Sheikh, Grayce C. Brown, Jackson MacTaggart, Thomas Nguyen, William D. Fletcher, Brenda L. Jones, Emma Koller, Veronica Petrus, Katie F. Pighini, Gray Rosario, Vincent A. Smedile, Adam T. Stone, Shawn You, Maura A. McLaughlin, Jacob E. Turner, Julia S. Deneva, Michael T. Lam, Brent J. Shapiro-Albert
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 2, p 225 (2024)
A pulsar’s scintillation bandwidth is inversely proportional to the scattering delay, making accurate measurements of scintillation bandwidth critical to characterize unmitigated delays in efforts to measure low-frequency gravitational waves with p
Externí odkaz:
https://doaj.org/article/499f16c1dd124a318d3034ad70f2a785
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 1, p 116 (2024)
Event Horizon Telescope (EHT) images of the horizon-scale emission around the Galactic center supermassive black hole Sagittarius A* (Sgr A*) favor accretion flow models with a jet component. However, this jet has not been conclusively detected. Usin
Externí odkaz:
https://doaj.org/article/404a6f06c8ec4ed5b3c4b65b969a55ef
Autor:
Olivia Young, Michael T. Lam
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 131 (2024)
Broadband radio waves emitted from pulsars are distorted and delayed as they propagate toward the Earth due to interactions with the free electrons that compose the interstellar medium (ISM), with lower radio frequencies being more impacted than high
Externí odkaz:
https://doaj.org/article/ec99ed1b4c4749809c8645e0ec537116
Autor:
Thierry Serafin Nadeau, Marten H. van Kerkwijk, Cees G. Bassa, Ben W. Stappers, Mitchell B. Mickaliger, Andrew G. Lyne
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 1, p 57 (2024)
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. From these, we identify
Externí odkaz:
https://doaj.org/article/18f903a8215e44129c2f4fa7de60d6b4
Autor:
Ziteng Wang, David L. Kaplan, Rahul Sengar, Emil Lenc, Andrew Zic, Akash Anumarlapudi, B. M. Gaensler, Natasha Hurley-Walker, Tara Murphy, Yuanming Wang
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 2, p 175 (2024)
We report the discovery of a young, highly scattered pulsar in a search for highly circularly polarized radio sources as part of the Australian Square Kilometre Array Pathfinder Variables and Slow Transients survey. In follow-up observations with the
Externí odkaz:
https://doaj.org/article/909314dcc8ef4073a9b20531d24e88bd
Autor:
Andrea Tiengo, Fabio Pintore, Beatrice Vaia, Simone Filippi, Andrea Sacchi, Paolo Esposito, Michela Rigoselli, Sandro Mereghetti, Ruben Salvaterra, Barbara Šiljeg, Andrea Bracco, Željka Bošnjak, Vibor Jelić, Sergio Campana
Publikováno v:
The Astrophysical Journal Letters, Vol 946, Iss 1, p L30 (2023)
GRB 221009A is the brightest gamma-ray burst (GRB) ever detected that has occurred at low Galactic latitude. Owing to this exceptional combination, its prompt X-ray emission could be detected for weeks in the form of expanding X-ray rings produced by
Externí odkaz:
https://doaj.org/article/3e00a6c9a37940f0bde7848e9fab0924
Akademický článek
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Autor:
Juan Carlos Gómez Martín, Olga Muñoz, Julia Martikainen, Daniel Guirado, Isabel Tanarro, Ramón J. Peláez, Belén Maté, Miguel Jiménez-Redondo, Víctor J. Herrero, Marco Peiteado, Teresa Jardiel
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 270, Iss 1, p 2 (2023)
Astronomical observations of the polarized intensity of scattered visible light have revealed the presence of dust envelopes around different types of evolved stars. These observations have helped determine the diameter and width of dust shells aroun
Externí odkaz:
https://doaj.org/article/8301edd57cfc4872abb895151a1b4e1b
Autor:
Shannon K. Bowes, Peter G. Martin
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 1, p 40 (2023)
We propose polarization of scattered optical light from intermediate Galactic latitude infrared cirrus as a new diagnostic to constrain models of interstellar dust and the anisotropic interstellar radiation field (aISRF). For single scattering by a s
Externí odkaz:
https://doaj.org/article/c2a0a7e8461c4ba5901b1771d123029b