Zobrazeno 1 - 10
of 101
pro vyhledávání: '"Wharton, R S"'
Autor:
Bethapudi, S., Spitler, L. G., Li, D. Z., Marthi, V. R., Bause, M., Main, R. A., Wharton, R. S.
Context. Fast Radio Burst 20180916B is a repeating FRB whose activity window has a 16.34 day periodicity that also shifts and varies in duration with the observing frequency. Recently, arxiv:2205.09221 reported the FRB has started to show secular Rot
Externí odkaz:
http://arxiv.org/abs/2409.12584
Autor:
Abbate, F., Noutsos, A., Desvignes, G., Wharton, R. S., Torne, P., Kramer, M., Eatough, R. P., Karuppusamy, R., Liu, K., Shao, L., Wongphechauxsorn, J.
We report the results of an observational campaign using the Effelsberg 100-m telescope of the pulsars J1746$-$2849, J1746$-$2850, J1746$-$2856 and J1745$-$2912 located in the Central Molecular Zone (CMZ) close to the Galactic centre in order to stud
Externí odkaz:
http://arxiv.org/abs/2307.03230
Autor:
Caleb, M., Driessen, L. N., Gordon, A. C., Tejos, N., Bernales, L., Qiu, H., Chibueze, J. O., Stappers, B. W., Rajwade, K. M., Cavallaro, F., Wang, Y., Kumar, P., Majid, W. A., Wharton, R. S., Naudet, C. J., Bezuidenhout, M. C., Jankowski, F., Malenta, M., Morello, V., Sanidas, S., Surnis, M. P., Barr, E. D., Chen, W., Kramer, M., Fong, W., Kilpatrick, C. D., Prochaska, J. Xavier, Simha, S., Venter, C., Heywood, I., Kundu, A., Schussler, F.
We present the discovery of FRB 20210410D, with the MeerKAT radio interferometer in South Africa, as part of the MeerTRAP commensal project. FRB 20210410D has a dispersion measure DM = 578.78 +/- 2 pc cm-3, and was localised to sub-arcsec precision i
Externí odkaz:
http://arxiv.org/abs/2302.09754
Autor:
Main, R. A., Bethapudi, S., Marthi, V. R., Bause, M. L., Li, D. Z., Lin, H. -H., Spitler, L. G., Wharton, R. S.
Compact radio sources exhibit scintillation, an interference pattern arising from propagation through inhomogeneous plasma, where scintillation patterns encode the relative distances and velocities of the source, scattering material, and Earth. In pr
Externí odkaz:
http://arxiv.org/abs/2212.04839
FRB 20180916B is a repeating fast radio burst (FRB) with an activity period of 16.33 days. In previous observations ranging from $\sim 150-1400$ MHz, the activity window was found to be frequency dependent, with lower frequency bursts occurring later
Externí odkaz:
http://arxiv.org/abs/2207.13669
Autor:
Gautam, T., Ridolfi, A., Freire, P. C. C., Wharton, R. S., Gupta, Y., Ransom, S. M., Oswald, L. S., Kramer, M., DeCesar, M. E.
Publikováno v:
A&A 664, A54 (2022)
Globular clusters contain a unique pulsar population, with many exotic systems that can form only in their dense stellar environments. The leap in sensitivity of the upgraded Giant Metrewave Radio Telescope (uGMRT) in India, especially at low radio f
Externí odkaz:
http://arxiv.org/abs/2205.15274
Autor:
Eatough, R. P., Torne, P., Desvignes, G., Kramer, M., Karuppusamy, R., Klein, B., Spitler, L. G., Lee, K. J., Champion, D. J., Liu, K., Wharton, R. S., Rezzolla, L., Falcke, H.
The high stellar density in the central parsecs around the Galactic Centre makes it a seemingly favourable environment for finding relativistic binary pulsars. These include pulsars orbiting other neutron stars, stellar-mass black holes or the centra
Externí odkaz:
http://arxiv.org/abs/2108.05241
Autor:
Marthi, V. R., Bethapudi, S., Main, R. A., Lin, H. -H., Spitler, L. G., Wharton, R. S., Li, D. Z., Gautam, T. G., Pen, U. -L., Hilmarsson, G. H.
We report the observations of the highly active FRb20201124A with the upgraded Giant Metrewave Radio Telescope at 550-750~MHz. These observations in the incoherent array mode simultaneously provided an arcsecond localization of bursts from \rss, the
Externí odkaz:
http://arxiv.org/abs/2108.00697
Autor:
Main, R. A., Hilmarsson, G. H., Marthi, V. R., Spitler, L. G., Wharton, R. S., Bethapudi, S., Li, D. Z., Lin, H. -H.
Scintillation of compact radio sources results from the interference between images caused by multipath propagation, and probes the intervening scattering plasma and the velocities of the emitting source and scattering screen. In FRB20201124A, a repe
Externí odkaz:
http://arxiv.org/abs/2108.00052
Autor:
Hilmarsson, G. H., Michilli, D., Spitler, L. G., Wharton, R. S., Demorest, P., Desvignes, G., Gourdji, K., Hackstein, S., Hessels, J. W. T., Nimmo, K., Seymour, A. D., Kramer, M., McKinven, R.
The repeating fast radio burst source FRB 121102 has been shown to have an exceptionally high and variable Faraday rotation measure (RM), which must be imparted within its host galaxy and likely by or within its local environment. In the redshifted (
Externí odkaz:
http://arxiv.org/abs/2009.12135