Zobrazeno 1 - 10
of 4 665
pro vyhledávání: '"Cameron, A. D."'
Autor:
Bunney, Cameron R. D., Louko, Jorma
Anti-de Sitter spacetime and the static patch of de Sitter spacetime are arenas for investigating thermal and finite-size effects seen by an accelerated quantum observer. We consider an Unruh-DeWitt detector in uniform circular motion coupled to a co
Externí odkaz:
http://arxiv.org/abs/2406.17643
Autor:
Dobie, Dougal, Zic, Andrew, Oswald, Lucy S., Pritchard, Joshua, Lower, Marcus E., Wang, Ziteng, Qiu, Hao, Hurley-Walker, Natasha, Wang, Yuanming, Lenc, Emil, Kaplan, David L., Anumarlapudi, Akash, Auchettl, Katie, Bailes, Matthew, Cameron, Andrew D., Cooke, Jeffrey, Deller, Adam, Driessen, Laura N., Freeburn, James, Murphy, Tara, Shannon, Ryan M., Stewart, Adam J.
Several sources of repeating coherent bursts of radio emission with periods of many minutes have now been reported in the literature. These ``ultra-long period'' (ULP) sources have no clear multi-wavelength counterparts and challenge canonical pulsar
Externí odkaz:
http://arxiv.org/abs/2406.12352
Autor:
Keith, M. J., Johnston, S., Karastergiou, A., Weltevrede, P., Lower, M. E., Basu, A., Posselt, B., Oswald, L. S., Parthasarathy, A., Cameron, A. D., Serylak, M., Buchner, S.
We report here on the timing of 597 pulsars over the last four years with the MeerKAT telescope. We provide Times-of-Arrival, pulsar ephemeris files and per-epoch measurements of the flux density, dispersion measure (DM) and rotation measure (RM) for
Externí odkaz:
http://arxiv.org/abs/2404.02051
Autor:
Basu, A., Weltevrede, P., Keith, M. J., Johnston, S., Karastergiou, A., Oswald, L. S., Posselt, B., Song, X., Cameron, A. D.
A number of pulsars are known to have profile evolution on timescales of months, often correlated with spin-down rate changes. Here, we present the first result from 3 years of monitoring observations from MeerKAT as part of the Thousand Pulsar Array
Externí odkaz:
http://arxiv.org/abs/2402.09065
Autor:
Cameron, Lindsey D.1,2 (AUTHOR) ldcamer@wharton.upenn.edu
Publikováno v:
Administrative Science Quarterly. Jun2024, Vol. 69 Issue 2, p458-514. 57p.
Autor:
Gautam, T., Freire, P. C. C., Wu, J., Krishnan, V. Venkatraman, Kramer, M., Barr, E. D., Bailes, M., Cameron, A. D.
PSR J1012$-$4235 is a 3.1ms pulsar in a wide binary (37.9 days) with a white dwarf companion. We detect, for the first time, a strong relativistic Shapiro delay signature in PSR J1012$-$4235. Our detection is the result of a timing analysis of data s
Externí odkaz:
http://arxiv.org/abs/2311.13563
Autor:
Lower, Marcus E., Johnston, Simon, Lyutikov, Maxim, Melrose, Donald B., Shannon, Ryan M., Weltevrede, Patrick, Caleb, Manisha, Camilo, Fernando, Cameron, Andrew D., Dai, Shi, Hobbs, George, Li, Di, Rajwade, Kaustubh M., Reynolds, John E., Sarkissian, John M., Stappers, Benjamin W.
Radio emission from magnetars provides a unique probe of the relativistic, magnetized plasma within the near-field environment of these ultra-magnetic neutron stars. The transmitted waves can undergo birefringent and dispersive propagation effects th
Externí odkaz:
http://arxiv.org/abs/2311.04195
Autor:
Wongphechauxsorn, J., Champion, D. J., Bailes, M., Balakrishnan, V., Barr, E. D., Bernadich, M. C. i, Bhat, N. D. R., Burgay, M., Cameron, A. D., Chen, W., Flynn, C. M. L., Jameson, A., Johnston, S., Keith, M. J., Kramer, M., Ng, C., Possenti, A., Sengar, R., Shannon, R. M., Stappers, B., van Straten, W.
The HTRU-S Low Latitude survey data within 1$^{\circ}$of the Galactic Centre (GC) were searched for pulsars using the Fast Folding Algorithm (FFA). Unlike traditional Fast Fourier Transform (FFT) pipelines, the FFA optimally folds the data for all po
Externí odkaz:
http://arxiv.org/abs/2310.14008
Publikováno v:
Phys. Rev. D 109, 065001 (2024)
It is well known that the experience of a linearly accelerated observer with acceleration $a$, interacting with a massless scalar field in its vacuum state in $3+1$ Minkowski spacetime, is identical to that of a static observer interacting with a mas
Externí odkaz:
http://arxiv.org/abs/2310.05700
Autor:
Bunney, Cameron R. D.
Publikováno v:
J. Math. Phys. 65, 052501 (2024)
We determine the conjugacy classes of the Poincar\'e group $\mathrm{ISO}^+(n,1)$ and apply this to classify the stationary trajectories of Minkowski spacetimes in terms of timelike Killing vectors. Stationary trajectories are the orbits of timelike K
Externí odkaz:
http://arxiv.org/abs/2310.04359