Zobrazeno 1 - 8
of 8
pro vyhledávání: '"M. L. A. Kouwenhoven"'
Autor:
D. Driesens, J.L.L. Voute, J.J. Langerak, P.C. van Haren, Th. D. Beijaard, R. Ramachandran, Ben Stappers, M. L. A. Kouwenhoven
Publikováno v:
Astronomy & Astrophysics, 385, 733-742. EDP Sciences
We have designed and constructed PuMa, a pulsar machine that has both a baseband recording and a digital lterbank mode. Its design is based on the use of digital signal processors (DSPs). Their operation is controlled by software, which makes PuMa re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b204959bf794efbc160f9ede53e1b066
https://doi.org/10.1051/0004-6361:20020123
https://doi.org/10.1051/0004-6361:20020123
Autor:
M. L. A. Kouwenhoven, J. L. L. Voûte
Publikováno v:
Astronomy & Astrophysics, 378(2), 700-709. EDP Sciences
We discuss the effect of digitisation on the signal-to-noise ratio of pulsed radio signals. We describe a general n -bit digitiser and show that a symmetric and equidistant digitiser has two free parameters: the threshold and the output value. We der
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca28cce6008aeac09e20713d988b5f9a
https://doi.org/10.1051/0004-6361:20011226
https://doi.org/10.1051/0004-6361:20011226
Publikováno v:
International Astronomical Union Colloquium. 177:23-26
We have built a pulsar machine (PuMa) for operation at the Westerbork Synthesis Radio Telescope. The combination of PuMa and WSRT is capable of many types of pulsar research. We show the coherent dedispersion capabilities and the flexible frequency r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84ad9a74c67140236e3007f62f7cdfc2
https://doi.org/10.1017/s0252921100058899
https://doi.org/10.1017/s0252921100058899
Autor:
D. Driesens, J.J. Langerak, P.C. van Haren, J.L.L. Voute, M. L. A. Kouwenhoven, T.D. Beijaard
Publikováno v:
IEEE Transactions on Nuclear Science, 47. Institute of Electrical and Electronics Engineers Inc.
Pulsars are neutron stars, rapidly rotating remains of supernova explosions, emitting bundles of broadband electromagnetic radiation. Researching these signals yields tests for fundamental physics theories and insight in the evolution of stars. To ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5aff444ef9d719b5957fdd566855a1a9
https://doi.org/10.1109/rtcon.1999.842563
https://doi.org/10.1109/rtcon.1999.842563
Publikováno v:
Astronomy & Astrophysics, 381, 993-999. EDP Sciences
Polarization-angle density displays are given for pulsars B0809+74 and B2303+30, which exhibit no evidence of the systematic polarization-angle rotation within individual subpulses previously reported for these two stars. The ``drifting'' subpulses o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2ae12166d7911601fc212f1934da05f
https://dare.uva.nl/personal/pure/en/publications/pulsar-driftingsubpulse-polarization-no-evidence-for-systematic-polarizationangle-rotations(5f63e0ca-5a56-49e5-ac89-d592d25c95aa).html
https://dare.uva.nl/personal/pure/en/publications/pulsar-driftingsubpulse-polarization-no-evidence-for-systematic-polarizationangle-rotations(5f63e0ca-5a56-49e5-ac89-d592d25c95aa).html
Publikováno v:
Astronomy & Astrophysics, 387, 169-178. EDP Sciences
We have found that there are two distinct emission modes in PSR B0809+74. Beside its normal and most common mode, the pulsar emits in a significantly different quasi-stable mode after most or possibly all nulls, occasionally for over 100 pulses. In t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22004ca41f37debb409c8362b90869e7
Autor:
M. L. A. Kouwenhoven
I have searched the Westerbork Northern Sky Survey (WENSS) source list for detections of known radio pulsars. A source with a flux density greater than five times the local noise level is found near the positions of 25 pulsars. The probability that o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9164f53e3c4a1d0eb8fb5b8b9ac9004f
http://arxiv.org/abs/astro-ph/0005539
http://arxiv.org/abs/astro-ph/0005539
Autor:
M. van den Berg, M. L. A. Kouwenhoven
Publikováno v:
Astronomy & Astrophysics. 367:931-932
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36a8cdcd3f52d300d04d71d0cc6f5c2e
https://doi.org/10.1051/0004-6361:20010048
https://doi.org/10.1051/0004-6361:20010048