Zobrazeno 1 - 10
of 403
pro vyhledávání: '"G B. Taylor"'
Autor:
A. C. S Readhead, V. Ravi, R. D. Blandford, A. G. Sullivan, J. Somalwar, M. C. Begelman, M. Birkinshaw, I. Liodakis, M. L. Lister, T. J. Pearson, G. B. Taylor, P. N. Wilkinson, N. Globus, S. Kiehlmann, C. R. Lawrence, D. Murphy, S. O’Neill, V. Pavlidou, E. Sheldahl, A. Siemiginowska, K. Tassis
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 2, p 242 (2024)
We use a sample of 54 compact symmetric objects (CSOs) to confirm that there are two unrelated CSO classes: an edge-dimmed, low-luminosity class (CSO 1), and an edge-brightened, high-luminosity class (CSO 2). Using blind tests, we show that CSO 2s co
Externí odkaz:
https://doaj.org/article/02064a117a3345868f790e61f53e83cf
Autor:
S. Kiehlmann, M. L. Lister, A. C. S Readhead, I. Liodakis, Sandra O’Neill, T. J. Pearson, Evan Sheldahl, Aneta Siemiginowska, K. Tassis, G. B. Taylor, P. N. Wilkinson
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 2, p 240 (2024)
Compact symmetric objects (CSOs) are jetted active galactic nuclei (AGN) with overall projected size 700 mJy is between (6.8 ± 1.6)% and (8.5 ± 1.8)%.
Externí odkaz:
https://doaj.org/article/4673032416ce4c5d80e7eec6bd30f210
Autor:
S. Kiehlmann, A. C. S. Readhead, S. O’Neill, P. N. Wilkinson, M. L. Lister, I. Liodakis, S. Bruzewski, V. Pavlidou, T. J. Pearson, E. Sheldahl, A. Siemiginowska, K. Tassis, G. B. Taylor
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 2, p 241 (2024)
Compact symmetric objects (CSOs) are compact (99%) of CSO 2s do not evolve into larger-scale radio sources. These CSO 2s belong to a distinct population of jetted AGN, which should be characterized as “short-lived,” as opposed to “young,” com
Externí odkaz:
https://doaj.org/article/9ec3739c56de4661abd0569f7e47dcff
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 2, p 163 (2023)
We report the results of careful astrometric measurements of the cannonball pulsar J0002+6216 carried out over 3 yr using the High Sensitivity Array. We significantly refine the proper motion to μ = 35.3 ± 0.6 mas yr ^−1 and place new constraints
Externí odkaz:
https://doaj.org/article/c8e8391e96694c29b26befc05313c88a
Publikováno v:
The Astrophysical Journal, Vol 943, Iss 1, p 51 (2023)
Approximately one-third of existing γ -ray sources identified by the Fermi Gamma-Ray Space Telescope are considered to be unassociated, with no known counterpart at other frequencies/wavelengths. These sources have been the subject of intense scruti
Externí odkaz:
https://doaj.org/article/62d9ff41636e42cda98631ab1d7690d8
Publikováno v:
The Astrophysical Journal, Vol 945, Iss 2, p 129 (2023)
We present X-ray and radio observations of the recently discovered bow-shock pulsar wind nebula (PWN) associated with PSR J0002+6216, characterizing the PWN morphology, which was unresolved in previous studies. The multifrequency, multiepoch Very Lar
Externí odkaz:
https://doaj.org/article/5f8ddbe4a63a4a1d8366dc95ee845b57
Autor:
J. F. Helmboldt, G. B. Taylor
Publikováno v:
Earth and Space Science, Vol 7, Iss 4, Pp n/a-n/a (2020)
Abstract This paper presents the results of an analysis of a unique observing campaign that tracks groups of irregularities associated with sporadic E ( Es) via their coherent backscattering of a very high frequency transmitter of opportunity (an ana
Externí odkaz:
https://doaj.org/article/5968799546aa44d58386d2a0f342154a
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 511:3937-3950
Efforts are underway to use high-precision timing of pulsars in order to detect low-frequency gravitational waves. A limit to this technique is the timing noise generated by dispersion in the plasma along the line of sight to the pulsar, including th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f7bc9dfcde32d7263c92ffad3a1dbc7
https://doi.org/10.1093/mnras/stac316
https://doi.org/10.1093/mnras/stac316
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 495:2125-2134
With the Expanded Long Wavelength Array and pulsar binning techniques, we searched for off-pulse emission from PSR B0950 + 08 at 76 MHz. Previous studies suggest that off-pulse emission can be due to pulsar wind nebulae (PWNe) in younger pulsars. Oth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5774f285bbbabcac2a41015808126df8
https://doi.org/10.1093/mnras/staa1305
https://doi.org/10.1093/mnras/staa1305
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 494:4848-4853
We observed the flare stars AD Leonis, Wolf 424, EQ Pegasi, EV Lacertae, and UV Ceti for nearly 135 hours. These stars were observed between 63 and 83 MHz using the interferometry mode of the Long Wavelength Array. Given that emission from flare star
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09c8c9582af45f8539b32160e2842db1
https://doi.org/10.1093/mnras/staa988
https://doi.org/10.1093/mnras/staa988