Zobrazeno 1 - 10
of 360
pro vyhledávání: '"W. van Straten"'
Autor:
M T Miles, R M Shannon, M Bailes, D J Reardon, M J Keith, A D Cameron, A Parthasarathy, M Shamohammadi, R Spiewak, W van Straten, S Buchner, F Camilo, M Geyer, A Karastergiou, M Kramer, M Serylak, G Theureau, V Venkatraman Krishnan
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 519:3976-3991
We present the first 2.5 years of data from the MeerKAT Pulsar Timing Array (MPTA), part of MeerTime, a MeerKAT Large Survey Project. The MPTA aims to precisely measure pulse arrival times from an ensemble of 88 pulsars visible from the Southern Hemi
Autor:
F Abbate, A Possenti, A Ridolfi, V Venkatraman Krishnan, S Buchner, E D Barr, M Bailes, M Kramer, A Cameron, A Parthasarathy, W van Straten, W Chen, F Camilo, P V Padmanabh, S A Mao, P C C Freire, S M Ransom, L Vleeschower, M Geyer, L Zhang
Publikováno v:
Monthly Notices of the Royal Astronomical Society
We present the polarization profiles of 22 pulsars in the globular cluster 47 Tucanae using observations from the MeerKAT radio telescope at UHF-band (544-1088 MHz) and report precise values of dispersion measure (DM) and rotation measure (RM). We us
Autor:
N. D. R. Bhat, N. A. Swainston, S. J. McSweeney, M. Xue, B.W. Meyers, S. Kudale, S. Dai, S. E. Tremblay, W. van Straten, R. M. Shannon, K. R. Smith, M. Sokolowski, S. M. Ord, G. Sleap, A. Williams, P. J. Hancock, R. Lange, J. Tocknell, M. Johnston-Hollitt, D. L. Kaplan, S. J. Tingay, M. Walker
In Paper I, we presented an overview of the Southern-sky MWA Rapid Two-metre (SMART) survey, including the survey design and search pipeline. While the combination of MWA's large field-of-view and the voltage capture system brings a survey speed of ~
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f29e667c67993a44e7c56d8e6d24c4fb
http://arxiv.org/abs/2302.11920
http://arxiv.org/abs/2302.11920
Autor:
R Sengar, V Balakrishnan, S Stevenson, M Bailes, E D Barr, N D R Bhat, M Burgay, M C i Bernadich, A D Cameron, D J Champion, W Chen, C M L Flynn, A Jameson, S Johnston, M J Keith, M Kramer, V Morello, C Ng, A Possenti, B Stappers, R M Shannon, W van Straten, J Wongphechauxsorn
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 512:5782-5792
The observable population of double neutron star (DNS) systems in the Milky Way allow us to understand the nature of supernovae and binary stellar evolution. Until now, all DNS systems in wide orbits ($ P_{\textrm{orb}}>$ 1~day) have been found to ha
Autor:
N. D. R. Bhat, N. A. Swainston, S. J. McSweeney, M. Xue, B.W. Meyers, S. Kudale, S. Dai, S. E. Tremblay, W. van Straten, R. M. Shannon, K. R. Smith, M. Sokolowski, S. M. Ord, G. Sleap, A. Williams, P. J. Hancock, R. Lange, J. Tocknell, M. Johnston-Hollitt, D. L. Kaplan, S. J. Tingay, M. Walker
Publikováno v:
Publications of the Astronomical Society of Australia. 40
We present an overview of the Southern-sky MWA Rapid Two-metre (SMART) pulsar survey that exploits the MWA's large field of view and voltage capture system to survey the sky south of 30 degree in declination for pulsars and fast transients in the 140
Autor:
A. Corongiu, V. Venkatraman Krishnan, P. C. C. Freire, M. Kramer, A. Possenti, M. Geyer, A. Ridolfi, F. Abbate, M. Bailes, E. D. Barr, V. Balakrishnan, S. Buchner, D. J. Champion, W. Chen, B. V. Hugo, A. Karastergiou, A. G. Lyne, R. N. Manchester, P. V. Padmanabh, A. Parthasarathy, S. M. Ransom, J. M. Sarkissian, M. Serylak, W. van Straten
Publikováno v:
Astronomy and Astrophysics
PSRJ1910-5959A (J1910A) is a binary millisecond pulsar in a 0.837 day circular orbit around a helium white dwarf (HeWD) companion. This pulsar is located 6.3 arcmin away from the centre of the globular cluster NGC6752. Given the large offset, the ass
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9c9c33cd162e5ba97f935dddb28a2d2
https://hdl.handle.net/21.11116/0000-000C-D238-821.11116/0000-000C-D23A-621.11116/0000-000C-D23B-5
https://hdl.handle.net/21.11116/0000-000C-D238-821.11116/0000-000C-D23A-621.11116/0000-000C-D23B-5
Autor:
H. Hu, M. Kramer, D. J. Champion, N. Wex, A. Parthasarathy, T. T. Pennucci, N. K. Porayko, W. van Straten, V. Venkatraman Krishnan, M. Burgay, P. C. C. Freire, R. N. Manchester, A. Possenti, I. H. Stairs, M. Bailes, S. Buchner, A. D. Cameron, F. Camilo, M. Serylak
The Double Pulsar, PSR J0737-3039A/B, has offered a wealth of gravitational experiments in the strong-field regime, all of which GR has passed with flying colours. In particular, among current gravity experiments that test photon propagation, the Dou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e4025024fbd23854cb615b235da12a4
http://arxiv.org/abs/2209.11798
http://arxiv.org/abs/2209.11798
Autor:
Daniel J. Reardon, Aris Karastergiou, Fernando Camilo, M. Serylak, Michael Kramer, Ryan Shannon, Renée Spiewak, Michael Keith, W. van Straten, Aditya Parthasarathy, V. Venkatraman Krishnan, Andrew Jameson, B. Hugo, Matthew Bailes, M. Geyer, Simon Johnston, Ewan Barr, S. Buchner, Patrick Weltevrede
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 505:4483-4495
We present observations of 35 high spin-down energy radio pulsars using the MeerKAT telescope. Polarisation profiles and associated parameters are also presented. We derive the geometry for a selection of pulsars which show interpulse emission. We po
Autor:
M. Serylak, Ryan Shannon, Bettina Posselt, Aris Karastergiou, Simon Johnston, S. Buchner, Matthew Bailes, W. van Straten, R. Spiewak, Michael Kramer, Daniel J. Reardon, Michael Keith, L. S. Oswald, M. Geyer, Aditya Parthasarathy, V. Venkatraman Krishnan
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 504:1115-1128
We have measured the scattering timescale, $\tau$, and the scattering spectral index, $\alpha$, for 84 single-component pulsars. Observations were carried out with the MeerKAT telescope as part of the Thousand-Pulsar-Array programme in the MeerTime p
Autor:
M. Serylak, V. Venkatraman Krishnan, P. C. C. Freire, T. M. Tauris, M. Kramer, M. Geyer, A. Parthasarathy, M. Bailes, M. C. i Bernadich, S. Buchner, M. Burgay, F. Camilo, A. Karastergiou, M. E. Lower, A. Possenti, D. J. Reardon, R. M. Shannon, R. Spiewak, I. H. Stairs, W. van Straten
Publikováno v:
Serylak, M, Krishnan, V V, Freire, P C C, Tauris, T M, Kramer, M, Geyer, M, Parthasarathy, A, Bailes, M, Bernadich, M C I, Buchner, S, Burgay, M, Camilo, F, Karastergiou, A, Lower, M E, Possenti, A, Reardon, D J, Shannon, R M, Spiewak, R, Stairs, I H & Van Straten, W 2022, ' The eccentric millisecond pulsar, PSR J0955-6150 : I. Pulse profile analysis, mass measurements, and constraints on binary evolution ', Astronomy and Astrophysics, vol. 665, A53 . https://doi.org/10.1051/0004-6361/202142670
PSR J0955$-$6150 is a member of a class of eccentric MSP+He WD systems (eMSPs), whose binary evolution is poorly understood and believed to be different to that of traditional MSP+He WD systems. Measuring the masses of the stars in this system is imp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a2a2dd4b9619b16f04cc76046627047
http://arxiv.org/abs/2203.00607
http://arxiv.org/abs/2203.00607