LOFAR 144-MHz follow-up observations of GW170817

Broderick, JW; Shimwell, TW; Gourdji, K; Rowlinson, A; Nissanke, S; Hotokezaka, K; Jonker, PG; Tasse, C; Hardcastle, MJ; Oonk, JBR; Fender, RP; Wijers, RAMJ; Shulevski, A; Stewart, AJ; ter Veen, S; Moss, VA; van der Wiel, MHD; Nichols, DA; Piette, A; Bell, ME; Carbone, D; Corbel, S; Eisloeffel, J; Griessmeier, J-M; Keane, EF; Law, CJ; Munoz-Darias, T; Pietka, M; Serylak, M; van der Horst, AJ; van Leeuwen, J; Wijnands, R; Zarka, P; Anderson, JM; Bentum, MJ; Blaauw, R; Brouw, WN; Brueggen, M; Ciardi, B; de Vos, M; Duscha, S; Fallows, RA; Franzen, TMO; Garrett, MA; Gunst, AW; Hoeft, M; Hoerandel, JR; Iacobelli, M; Juette, E; Koopmans, LVE; Krankowski, A; Maat, P; Mann, G; Mulder, H; Nelles, A; Paas, H; Pandey-Pommier, M; Pekal, R; Reich, W; Roettgering, HJA; Schwarz, DJ; Smirnov, O; Soida, M; Toribio, MC; van Haarlem, MP; van Weeren, RJ; Vocks, C; Wucknitz, O; Zucca, P

LOFAR 144-MHz follow-up observations of GW170817

Broderick, JW Shimwell, TW Gourdji, K Rowlinson, A Nissanke, S Hotokezaka, K Jonker, PG Tasse, C Hardcastle, MJ Oonk, JBR Fender, RP Wijers, RAMJ Shulevski, A Stewart, AJ ter Veen, S Moss, VA van der Wiel, MHD Nichols, DA Piette, A Bell, ME Carbone, D Corbel, S Eisloeffel, J Griessmeier, J-M Keane, EF Law, CJ Munoz-Darias, T Pietka, M Serylak, M van der Horst, AJ van Leeuwen, J Wijnands, R Zarka, P Anderson, JM Bentum, MJ Blaauw, R Brouw, WN Brueggen, M Ciardi, B de Vos, M Duscha, S Fallows, RA Franzen, TMO Garrett, MA Gunst, AW Hoeft, M Hoerandel, JR Iacobelli, M Juette, E Koopmans, LVE Krankowski, A Maat, P Mann, G Mulder, H Nelles, A Paas, H Pandey-Pommier, M Pekal, R Reich, W Roettgering, HJA Schwarz, DJ Smirnov, O Soida, M Toribio, MC van Haarlem, MP van Weeren, RJ Vocks, C Wucknitz, O Zucca, P

Permalink

Publisher:: OXFORD UNIV PRESS
Publication Type:: Journal Article
Citation:: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 494, (4), pp. 5110-5117
Issue Date:: 2020-06-01

Open Access

Copyright Clearance Process

Recently Added
In Progress
Open Access

This item is open access.

Adobe PDF

Download Accepted versionAdobe PDF (1.33 MB)

View on publisher's site

View statistics

Full metadata record

Field	Value	Language
dc.contributor.author	Broderick, JW
dc.contributor.author	Shimwell, TW
dc.contributor.author	Gourdji, K
dc.contributor.author	Rowlinson, A
dc.contributor.author	Nissanke, S
dc.contributor.author	Hotokezaka, K
dc.contributor.author	Jonker, PG
dc.contributor.author	Tasse, C
dc.contributor.author	Hardcastle, MJ
dc.contributor.author	Oonk, JBR
dc.contributor.author	Fender, RP
dc.contributor.author	Wijers, RAMJ
dc.contributor.author	Shulevski, A
dc.contributor.author	Stewart, AJ
dc.contributor.author	ter Veen, S
dc.contributor.author	Moss, VA
dc.contributor.author	van der Wiel, MHD
dc.contributor.author	Nichols, DA
dc.contributor.author	Piette, A
dc.contributor.author	Bell, ME
dc.contributor.author	Carbone, D
dc.contributor.author	Corbel, S
dc.contributor.author	Eisloeffel, J
dc.contributor.author	Griessmeier, J-M
dc.contributor.author	Keane, EF
dc.contributor.author	Law, CJ
dc.contributor.author	Munoz-Darias, T
dc.contributor.author	Pietka, M
dc.contributor.author	Serylak, M
dc.contributor.author	van der Horst, AJ
dc.contributor.author	van Leeuwen, J
dc.contributor.author	Wijnands, R
dc.contributor.author	Zarka, P
dc.contributor.author	Anderson, JM
dc.contributor.author	Bentum, MJ
dc.contributor.author	Blaauw, R
dc.contributor.author	Brouw, WN
dc.contributor.author	Brueggen, M
dc.contributor.author	Ciardi, B
dc.contributor.author	de Vos, M
dc.contributor.author	Duscha, S
dc.contributor.author	Fallows, RA
dc.contributor.author	Franzen, TMO
dc.contributor.author	Garrett, MA
dc.contributor.author	Gunst, AW
dc.contributor.author	Hoeft, M
dc.contributor.author	Hoerandel, JR
dc.contributor.author	Iacobelli, M
dc.contributor.author	Juette, E
dc.contributor.author	Koopmans, LVE
dc.contributor.author	Krankowski, A
dc.contributor.author	Maat, P
dc.contributor.author	Mann, G
dc.contributor.author	Mulder, H
dc.contributor.author	Nelles, A
dc.contributor.author	Paas, H
dc.contributor.author	Pandey-Pommier, M
dc.contributor.author	Pekal, R
dc.contributor.author	Reich, W
dc.contributor.author	Roettgering, HJA
dc.contributor.author	Schwarz, DJ
dc.contributor.author	Smirnov, O
dc.contributor.author	Soida, M
dc.contributor.author	Toribio, MC
dc.contributor.author	van Haarlem, MP
dc.contributor.author	van Weeren, RJ
dc.contributor.author	Vocks, C
dc.contributor.author	Wucknitz, O
dc.contributor.author	Zucca, P
dc.date.accessioned	2020-12-17T03:43:02Z
dc.date.available	2020-12-17T03:43:02Z
dc.date.issued	2020-06-01
dc.identifier.citation	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 494, (4), pp. 5110-5117
dc.identifier.issn	0035-8711
dc.identifier.issn	1365-2966
dc.identifier.uri	http://hdl.handle.net/10453/144801
dc.description.abstract	<jats:title>ABSTRACT</jats:title> <jats:p>We present low-radio-frequency follow-up observations of AT 2017gfo, the electromagnetic counterpart of GW170817, which was the first binary neutron star merger to be detected by Advanced LIGO–Virgo. These data, with a central frequency of 144 MHz, were obtained with LOFAR, the Low-Frequency Array. The maximum elevation of the target is just 13${_{.}^{\circ}}$7 when observed with LOFAR, making our observations particularly challenging to calibrate and significantly limiting the achievable sensitivity. On time-scales of 130–138 and 371–374 d after the merger event, we obtain 3σ upper limits for the afterglow component of 6.6 and 19.5 mJy beam−1, respectively. Using our best upper limit and previously published, contemporaneous higher frequency radio data, we place a limit on any potential steepening of the radio spectrum between 610 and 144 MHz: the two-point spectral index $\alpha ^{610}_{144} \gtrsim$ −2.5. We also show that LOFAR can detect the afterglows of future binary neutron star merger events occurring at more favourable elevations.</jats:p>
dc.language	English
dc.publisher	OXFORD UNIV PRESS
dc.relation.ispartof	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
dc.relation.isbasedon	10.1093/mnras/staa950
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0201 Astronomical and Space Sciences
dc.subject.classification	Astronomy & Astrophysics
dc.title	LOFAR 144-MHz follow-up observations of GW170817
dc.type	Journal Article
utslib.citation.volume	494
utslib.for	0201 Astronomical and Space Sciences
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2020-12-17T03:42:53Z
pubs.issue	4
pubs.publication-status	Published
pubs.volume	494
utslib.citation.issue	4

Abstract:

ABSTRACT We present low-radio-frequency follow-up observations of AT 2017gfo, the electromagnetic counterpart of GW170817, which was the first binary neutron star merger to be detected by Advanced LIGO–Virgo. These data, with a central frequency of 144 MHz, were obtained with LOFAR, the Low-Frequency Array. The maximum elevation of the target is just 13${_{.}^{\circ}}$7 when observed with LOFAR, making our observations particularly challenging to calibrate and significantly limiting the achievable sensitivity. On time-scales of 130–138 and 371–374 d after the merger event, we obtain 3σ upper limits for the afterglow component of 6.6 and 19.5 mJy beam−1, respectively. Using our best upper limit and previously published, contemporaneous higher frequency radio data, we place a limit on any potential steepening of the radio spectrum between 610 and 144 MHz: the two-point spectral index $\alpha ^{610}_{144} \gtrsim$ −2.5. We also show that LOFAR can detect the afterglows of future binary neutron star merger events occurring at more favourable elevations.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/144801