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Sökning: onr:"swepub:oai:research.chalmers.se:505813f2-bf8f-4fdb-8631-85e4edf5f39f" > Repeating fast radi...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00008124naa a2200901 4500
001oai:research.chalmers.se:505813f2-bf8f-4fdb-8631-85e4edf5f39f
003SwePub
008200409s2020 | |||||||||||000 ||eng|
0247 a https://doi.org/10.1051/0004-6361/2019374222 DOI
0247 a https://research.chalmers.se/publication/5163582 URI
0247 a https://research.chalmers.se/publication/5181912 URI
040 a (SwePub)cth
041 a engb eng
042 9 SwePub
072 7a art2 swepub-publicationtype
072 7a ref2 swepub-contenttype
1001 a Oostrum, L. C.u Netherlands Institute for Radio Astronomy (ASTRON),Universiteit Van Amsterdam,University of Amsterdam4 aut
2451 0a Repeating fast radio bursts with WSRT/Apertif
264 c 2020-03-09
264 1b EDP Sciences,c 2020
338 a electronic2 rdacarrier
520 a Context. Repeating fast radio bursts (FRBs) present excellent opportunities to identify FRB progenitors and host environments as well as to decipher the underlying emission mechanism. Detailed studies of repeating FRBs might also hold clues as to the origin of FRBs as a population. Aims. We aim to detect bursts from the first two repeating FRBs, FRB 121102 (R1) and FRB 180814.J0422+73 (R2), and to characterise their repeat statistics. We also want to significantly improve the sky localisation of R2 and identify its host galaxy. Methods. We used the Westerbork Synthesis Radio Telescope to conduct extensive follow-up of these two repeating FRBs. The new phased-array feed system, Apertif, allows one to cover the entire sky position uncertainty of R2 with fine spatial resolution in a single pointing. The data were searched for bursts around the known dispersion measures of the two sources. We characterise the energy distribution and the clustering of detected R1 bursts. Results. We detected 30 bursts from R1. The non-Poissonian nature is clearly evident from the burst arrival times, which is consistent with earlier claims. Our measurements indicate a dispersion measure (DM) of 563.5(2) pc cm(-3), suggesting a significant increase in DM over the past few years. Assuming a constant position angle across the burst, we place an upper limit of 8% on the linear polarisation fraction for the brightest burst in our sample. We did not detect any bursts from R2. Conclusions. A single power-law might not fit the R1 burst energy distribution across the full energy range or widely separated detections. Our observations provide improved constraints on the clustering of R1 bursts. Our stringent upper limits on the linear polarisation fraction imply a significant depolarisation, either intrinsic to the emission mechanism or caused by the intervening medium at 1400 MHz, which is not observed at higher frequencies. The non-detection of any bursts from R2, despite nearly 300 h of observations, implies either a highly clustered nature of the bursts, a steep spectral index, or a combination of the two assuming that the source is still active. Another possibility is that R2 has turned off completely, either permanently or for an extended period of time.
650 7a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
650 7a TEKNIK OCH TEKNOLOGIERx Elektroteknik och elektronik0 (SwePub)2022 hsv//swe
650 7a ENGINEERING AND TECHNOLOGYx Electrical Engineering, Electronic Engineering, Information Engineering0 (SwePub)2022 hsv//eng
653 a stars: neutron
653 a radio continuum: general
653 a pulsars: general
7001 a Maan, Y.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a van Leeuwen, J.u Universiteit Van Amsterdam,University of Amsterdam,Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Connor, L.u Universiteit Van Amsterdam,University of Amsterdam,Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Petroff, E.u Universiteit Van Amsterdam,University of Amsterdam4 aut
7001 a Attema, J. J.u Netherlands eScience Center4 aut
7001 a Bast, J. E.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Gardenier, D. W.u Universiteit Van Amsterdam,University of Amsterdam,Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Hargreaves, J. E.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Kooistra, E.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a van der Schuur, D.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Sclocco, A.u Netherlands eScience Center4 aut
7001 a Smits, R.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Straal, S. M.u New York University Abu Dhabi4 aut
7001 a ter Veen, S.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Vohl, D.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Adams, E. A. K.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Adebahr, B.u Ruhr-Universität Bochum4 aut
7001 a de Blok, W. J. G.u Netherlands Institute for Radio Astronomy (ASTRON),University of Cape Town4 aut
7001 a van den Brink, R. H.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a van Cappellen, W. A.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Coolen, A. H. W. M.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Damstra, S.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a van Diepen, G. N. J.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Frank, B. S.u University of Cape Town4 aut
7001 a Hess, K. M.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a van der Hulst, J. M.4 aut
7001 a Hut, B.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Ivashina, Marianna,d 1975u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)ivashina
7001 a Loose, G. M.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Lucero, D. M.u Virginia Polytechnic Institute and State University (Virginia Tech)4 aut
7001 a Mika, A.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Morganti, R. H.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Moss, V. A.u Netherlands Institute for Radio Astronomy (ASTRON),Commonwealth Scientific and Industrial Research Organisation (CSIRO),The University of Sydney4 aut
7001 a Mulder, H.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Norden, M. J.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Oosterloo, T. A.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Orru, E.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a de Reijer, J. P. R.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Ruiter, M.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Vermaas, N. J.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Wijnholds, S. J.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut
7001 a Ziemke, J.u Netherlands Institute for Radio Astronomy (ASTRON),Rijksuniversiteit Groningen,University of Groningen4 aut
7102 a Netherlands Institute for Radio Astronomy (ASTRON)b Universiteit Van Amsterdam4 org
7730 t Astronomy and Astrophysicsd : EDP Sciencesg 635q 635x 0004-6361x 1432-0746
8564 u https://research.chalmers.se/publication/518191/file/518191_Fulltext.pdfx primaryx freey FULLTEXT
8564 u https://www.aanda.org/articles/aa/pdf/2020/03/aa37422-19.pdf
8564 8u https://doi.org/10.1051/0004-6361/201937422
8564 8u https://research.chalmers.se/publication/516358
8564 8u https://research.chalmers.se/publication/518191

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