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
- 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
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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.
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