Journal articles
Orbital and superorbital variability of LS I +61 303 at low radio frequencies with GMRT and LOFAR
B. Marcote
1
M. Ribó
1
J. M. Paredes
1
C. H. Ishwara-Chandra
2
J. D. Swinbank
3
J. W. Broderick
4
S. Markoff
5
R. Fender
4
R. A. M. J. Wijers
5
G. G. Pooley
6
A. J. Stewart
4
M. E. Bell
7
R. P. Breton
8
D. Carbone
5
Stéphane Corbel
9, 10
J. Eislöffel
11
H. Falcke
12
Jean-Mathias Grießmeier
10, 13
M. Kuniyoshi
14
M. Pietka
4
A. Rowlinson
5, 15
M. Serylak
4
A. J. van der Horst
5
J. van Leeuwen
5, 15
M. W. Wise
5
P. Zarka
16, 10
H. Falcke 12
Author
Jean-Mathias Grießmeier 10, 13
Mail :
Author Employer institution : Université d'Orléans
M. Kuniyoshi 14
Author
M. Pietka 4
Author
A. Rowlinson 5, 15
Author
M. Serylak 4
Author
A. J. van der Horst 5
Author
J. van Leeuwen 5, 15
Author
M. W. Wise 5
Author
P. Zarka 16, 10
Author
1
DAM - Departament d'Astronomia i Meteorologia [Barcelona] (E-08028 Barcelona - Spain)
- UB - Universitat de Barcelona (Gran Via de les Corts Catalanes, 585, 08007 Barcelona - Spain)
2
NCRA - National Centre for Radio Astrophysics [Pune] (Ganeshkhind, Pune 411007, India - India)
- TIFR - Tata Institute of Fundamental Research [Bombay] (Homi Bhabha Road, Mumbai 400 005 - India)
3
Department of Astrophysical Sciences [Princeton] (4 Ivy Lane, Princeton University, Princeton, NJ 08544 - United States)
- Princeton University (Princeton, NJ 08544 USA - United States)
4
Oxford Astrophysics (Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UK - United Kingdom)
- University of Oxford [Oxford] (Wellington Square, Oxford OX1 2JD - United Kingdom)
5
AI PANNEKOEK - Astronomical Institute Anton Pannekoek (PO Box 94249, 1090 GE Amsterdam - Netherlands)
- UvA - University of Amsterdam [Amsterdam] (Spui 21 1012 WX Amsterdam - Netherlands)
6
MRAO - Mullard Radio Astronomy Observatory (Cavendish Laboratory, The University of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0HE, UK - United Kingdom)
- CAM - University of Cambridge [UK] (The Old Schools, Trinity Lane, Cambridge CB2 1TN - United Kingdom)
7
University of Southampton (University Road, Southampton SO17 1BJ - United Kingdom)
8
Jodrell Bank Centre for Astrophysics (M13 9PL;Manchester - United Kingdom)
- University of Manchester [Manchester] (Oxford Rd, Manchester M13 9PL - United Kingdom)
9
AIM (UMR_7158 / UMR_E_9005 / UM_112) - Astrophysique Interprétation Modélisation (AIM - UMR 7158 - UMR E 9005,
ex "Astrophysique Interactions Multi-échelles",
Service d'astrophysique,
CEA/Saclay,
Orme des Merisiers
F-91191 GIF SUR YVETTE CEDEX - France)
- CNRS - Centre National de la Recherche Scientifique : UMR_7158 (France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : UMR_E_9005 (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- UPD7 - Université Paris Diderot - Paris 7 : UMR_7158 (5 rue Thomas-Mann - 75205 Paris cedex 13 - France)
10
USN - Unité Scientifique de la Station de Nançay (18330 NANCAY - France)
- UO - Université d'Orléans : USR 704 (Château de la Source - Avenue du Parc Floral - BP 6749 - 45067 Orléans cedex 2 - France)
- OSUC - Observatoire des Sciences de l'Univers en région Centre (Campus Géosciences, 1A rue de la Férollerie, 45071 Orléans - France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- Observatoire de Paris (61 Av de l'Observatoire 75014 PARIS - France)
- PSL - PSL Research University (France)
- UO - Université d'Orléans (Château de la Source - Avenue du Parc Floral - BP 6749 - 45067 Orléans cedex 2 - France)
- CNRS - Centre National de la Recherche Scientifique : UMS3116 (France)
- INSU - CNRS - Institut national des sciences de l'Univers : USR 704 (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- Observatoire de Paris : USR 704 (61 Av de l'Observatoire 75014 PARIS - France)
- PSL - PSL Research University (France)
- CNRS - Centre National de la Recherche Scientifique : USR 704 (France)
11
TLS - Thüringer Landessternwarte Tautenburg ( Sternwarte 5, 07778 Tautenburg - Germany)
12
Radboud university [Nijmegen] (Comeniuslaan 4, 6525 HP Nijmegen - Netherlands)
13
LPC2E - Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (3A, Avenue de la Recherche Scientifique 45071 Orléans cedex 2 - France)
- OSUC - Observatoire des Sciences de l'Univers en région Centre : UMS3116 (Campus Géosciences, 1A rue de la Férollerie, 45071 Orléans - France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- Observatoire de Paris (61 Av de l'Observatoire 75014 PARIS - France)
- PSL - PSL Research University (France)
- UO - Université d'Orléans (Château de la Source - Avenue du Parc Floral - BP 6749 - 45067 Orléans cedex 2 - France)
- CNRS - Centre National de la Recherche Scientifique : UMS3116 (France)
- CNES - Centre National d’Études Spatiales [Paris] : UMR 7328 (Siège social : 2 place Maurice Quentin, 75039 Paris - France)
14
MPIFR - Max-Planck-Institut für Radioastronomie (Auf dem Hügel 69 D-53121 Bonn - Germany)
15
ASTRON - Netherlands Institute for Radio Astronomy (Oude Hoogeveensedijk 4, 7991 PD Dwingeloo / PO Box 2, 7990 AA Dwingeloo - Netherlands)
16
LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique (5, place Jules Janssen 92190 MEUDON - France)
- CNRS - Centre National de la Recherche Scientifique : UMR8109 (France)
- UPD7 - Université Paris Diderot - Paris 7 (5 rue Thomas-Mann - 75205 Paris cedex 13 - France)
- Observatoire de Paris (61 Av de l'Observatoire 75014 PARIS - France)
- PSL - PSL Research University (France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- UPMC - Université Pierre et Marie Curie - Paris 6 (4 place Jussieu - 75005 Paris - France)
Abstract : LS I +61 303 is a gamma-ray binary that exhibits an outburst at GHz frequencies each orbitalcycle of 26:5 d and a superorbital modulation with a period of 4.6 yr. We have performeda detailed study of the low-frequency radio emission of LS I +61 303 by analysing all thearchival GMRT data at 150, 235 and 610 MHz, and conducting regular LOFAR observationswithin the Radio Sky Monitor (RSM) at 150 MHz. We have detected the source for the firsttime at 150 MHz, which is also the first detection of a gamma-ray binary at such a low frequency.We have obtained the light-curves of the source at 150, 235 and 610 MHz, all of themshowing orbital modulation. The light-curves at 235 and 610 MHz also show the existenceof superorbital variability. A comparison with contemporaneous 15-GHz data shows remarkabledierences with these light-curves. At 15 GHz we see clear outbursts, whereas at lowfrequencies we see variability with wide maxima. The light-curve at 235 MHz seems to beanticorrelated with the one at 610 MHz, implying a shift of 0.5 orbital phases in the maxima.We model the shifts between the maxima at dierent frequencies as due to changes in thephysical parameters of the emitting region assuming either free-free absorption or synchrotronself-absorption, obtaining expansion velocities for this region close to the stellar wind velocitywith both mechanisms.
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Journal articles
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https://hal-insu.archives-ouvertes.fr/insu-01338384
Contributor : Nathalie Rouchon <>
Submitted on : Friday, January 13, 2017 - 3:07:55 PM
Last modification on : Thursday, July 16, 2020 - 9:34:45 AM
Document(s) archivé(s) le : Friday, April 14, 2017 - 8:36:17 PM
Contributor : Nathalie Rouchon <>
Submitted on : Friday, January 13, 2017 - 3:07:55 PM
Last modification on : Thursday, July 16, 2020 - 9:34:45 AM
Document(s) archivé(s) le : Friday, April 14, 2017 - 8:36:17 PM
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Identifiers
- HAL Id : insu-01338384, version 1
- ARXIV : 1512.03016
- BIBCODE : 2016MNRAS.456.1791M
- DOI : 10.1093/mnras/stv2771
Collections
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Citation
B. Marcote, M. Ribó, J. M. Paredes, C. H. Ishwara-Chandra, J. D. Swinbank, et al.. Orbital and superorbital variability of LS I +61 303 at low radio frequencies with GMRT and LOFAR. Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P - Oxford Open Option A, 2016, 456 (2), pp.1791-1802. ⟨10.1093/mnras/stv2771⟩. ⟨insu-01338384⟩
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