Follow up of GW170817 and its electromagnetic counterpart by Australian-led observing programmes

The discovery of the first electromagnetic counterpart to a gravitational wave signal has generated follow-up observations by over 50 facilities world-wide, ushering in the new era of multi-messenger astronomy. In this paper, we present follow-up observations of the gravitational wave event GW170817...

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Main Authors:	Andreoni, I., Ackley, K., Cooke, J., Acharyya, A., Allison, J.R., Anderson, G.E., Ashley, M.C.B., Baade, D., Bailes, M., Bannister, K., Beardsley, A., Bessell, M.S., Bian, F., Bland, P.A., Boer, M., Booler, T., Brandeker, A., Brown, I.S., Buckley, D.A.H., Chang, S.-W., Coward, D.M., Crawford, S., Crisp, H., Crosse, B., Cucchiara, A., Cupák, M., de Gois, J.S., Deller, A., Devillepoix, H.A.R., Dobie, D., Elmer, E., Emrich, D., Farah, W., Farrell, T.J., Franzen, T., Gaensler, B.M., Galloway, D.K., Gendre, B., Giblin, T., Goobar, A., Green, J., Hancock, P.J., Hartig, B.A.D., Howell, E.J., Horsley, L., Hotan, A., Howie, R.M., Hu, L., Hu, Y., James, C.W., Johnston, S., Johnston-Hollitt, M., Kaplan, D.L., Kasliwal, M., Keane, E.F., Kenney, D., Klotz, A., Lau, R., Laugier, R., Lenc, E., Li, X., Liang, E., Lidman, C., Luvaul, L.C., Lynch, C., Ma, B., Macpherson, D., Mao, J., McClelland, D.E., McCully, C., Möller, A., Morales, M.F., Morris, D., Murphy, T., Noysena, K., Onken, C.A., Orange, N.B., Osłowski, S., Pallot, D., Paxman, J., Potter, S.B., Pritchard, T., Raja, W., Ridden-Harper, R., Romero-Colmenero, E., Sadler, E.M., Sansom, E.K., Scalzo, R.A., Schmidt, B.P., Scott, S.M., Seghouani, N., Shang, Z., Shannon, R.M., Shao, L., Shara, M.M., Sharp, R., Sokolowski, M., Sollerman, J., Staff, J., Steele, K., Sun, T., Suntzeff, N.B., Tao, C., Tingay, S., Towner, M.C., Thierry, P., Trott, C., Tucker, B.E., Väisänen, P., Krishnan, V. Venkatraman, Walker, M., Wang, L., Wang, X., Wayth, R., Whiting, M., Williams, A., Williams, T., Wolf, C., Wu, C., Wu, X., Yang, J., Yuan, X., Zhang, H., Zhou, J., Zovaro, H.
Format:	Article
Published:	2017
Subjects:	gamma-ray burst: individual: GRB170817A ; gravitational waves ; stars: neutron ; supernovae: general ; supernovae: individual: AT2017gfo
Online Access:	https://eprints.nottingham.ac.uk/49780/

_version_	1848798075534966784
author	Andreoni, I. Ackley, K. Cooke, J. Acharyya, A. Allison, J.R. Anderson, G.E. Ashley, M.C.B. Baade, D. Bailes, M. Bannister, K. Beardsley, A. Bessell, M.S. Bian, F. Bland, P.A. Boer, M. Booler, T. Brandeker, A. Brown, I.S. Buckley, D.A.H. Chang, S.-W. Coward, D.M. Crawford, S. Crisp, H. Crosse, B. Cucchiara, A. Cupák, M. de Gois, J.S. Deller, A. Devillepoix, H.A.R. Dobie, D. Elmer, E. Emrich, D. Farah, W. Farrell, T.J. Franzen, T. Gaensler, B.M. Galloway, D.K. Gendre, B. Giblin, T. Goobar, A. Green, J. Hancock, P.J. Hartig, B.A.D. Howell, E.J. Horsley, L. Hotan, A. Howie, R.M. Hu, L. Hu, Y. James, C.W. Johnston, S. Johnston-Hollitt, M. Kaplan, D.L. Kasliwal, M. Keane, E.F. Kenney, D. Klotz, A. Lau, R. Laugier, R. Lenc, E. Li, X. Liang, E. Lidman, C. Luvaul, L.C. Lynch, C. Ma, B. Macpherson, D. Mao, J. McClelland, D.E. McCully, C. Möller, A. Morales, M.F. Morris, D. Murphy, T. Noysena, K. Onken, C.A. Orange, N.B. Osłowski, S. Pallot, D. Paxman, J. Potter, S.B. Pritchard, T. Raja, W. Ridden-Harper, R. Romero-Colmenero, E. Sadler, E.M. Sansom, E.K. Scalzo, R.A. Schmidt, B.P. Scott, S.M. Seghouani, N. Shang, Z. Shannon, R.M. Shao, L. Shara, M.M. Sharp, R. Sokolowski, M. Sollerman, J. Staff, J. Steele, K. Sun, T. Suntzeff, N.B. Tao, C. Tingay, S. Towner, M.C. Thierry, P. Trott, C. Tucker, B.E. Väisänen, P. Krishnan, V. Venkatraman Walker, M. Wang, L. Wang, X. Wayth, R. Whiting, M. Williams, A. Williams, T. Wolf, C. Wu, C. Wu, X. Yang, J. Yuan, X. Zhang, H. Zhou, J. Zovaro, H.
author_facet	Andreoni, I. Ackley, K. Cooke, J. Acharyya, A. Allison, J.R. Anderson, G.E. Ashley, M.C.B. Baade, D. Bailes, M. Bannister, K. Beardsley, A. Bessell, M.S. Bian, F. Bland, P.A. Boer, M. Booler, T. Brandeker, A. Brown, I.S. Buckley, D.A.H. Chang, S.-W. Coward, D.M. Crawford, S. Crisp, H. Crosse, B. Cucchiara, A. Cupák, M. de Gois, J.S. Deller, A. Devillepoix, H.A.R. Dobie, D. Elmer, E. Emrich, D. Farah, W. Farrell, T.J. Franzen, T. Gaensler, B.M. Galloway, D.K. Gendre, B. Giblin, T. Goobar, A. Green, J. Hancock, P.J. Hartig, B.A.D. Howell, E.J. Horsley, L. Hotan, A. Howie, R.M. Hu, L. Hu, Y. James, C.W. Johnston, S. Johnston-Hollitt, M. Kaplan, D.L. Kasliwal, M. Keane, E.F. Kenney, D. Klotz, A. Lau, R. Laugier, R. Lenc, E. Li, X. Liang, E. Lidman, C. Luvaul, L.C. Lynch, C. Ma, B. Macpherson, D. Mao, J. McClelland, D.E. McCully, C. Möller, A. Morales, M.F. Morris, D. Murphy, T. Noysena, K. Onken, C.A. Orange, N.B. Osłowski, S. Pallot, D. Paxman, J. Potter, S.B. Pritchard, T. Raja, W. Ridden-Harper, R. Romero-Colmenero, E. Sadler, E.M. Sansom, E.K. Scalzo, R.A. Schmidt, B.P. Scott, S.M. Seghouani, N. Shang, Z. Shannon, R.M. Shao, L. Shara, M.M. Sharp, R. Sokolowski, M. Sollerman, J. Staff, J. Steele, K. Sun, T. Suntzeff, N.B. Tao, C. Tingay, S. Towner, M.C. Thierry, P. Trott, C. Tucker, B.E. Väisänen, P. Krishnan, V. Venkatraman Walker, M. Wang, L. Wang, X. Wayth, R. Whiting, M. Williams, A. Williams, T. Wolf, C. Wu, C. Wu, X. Yang, J. Yuan, X. Zhang, H. Zhou, J. Zovaro, H.
author_sort	Andreoni, I.
building	Nottingham Research Data Repository
collection	Online Access
description	The discovery of the first electromagnetic counterpart to a gravitational wave signal has generated follow-up observations by over 50 facilities world-wide, ushering in the new era of multi-messenger astronomy. In this paper, we present follow-up observations of the gravitational wave event GW170817 and its electromagnetic counterpart SSS17a/DLT17ck (IAU label AT2017gfo) by 14 Australian telescopes and partner observatories as part of Australian-based and Australian-led research programs. We report early- to late-time multi-wavelength observations, including optical imaging and spectroscopy, mid-infrared imaging, radio imaging, and searches for fast radio bursts. Our optical spectra reveal that the transient source emission cooled from approximately 6 400 K to 2 100 K over a 7-d period and produced no significant optical emission lines. The spectral profiles, cooling rate, and photometric light curves are consistent with the expected outburst and subsequent processes of a binary neutron star merger. Star formation in the host galaxy probably ceased at least a Gyr ago, although there is evidence for a galaxy merger. Binary pulsars with short (100 Myr) decay times are therefore unlikely progenitors, but pulsars like PSR B1534+12 with its 2.7 Gyr coalescence time could produce such a merger. The displacement (~2.2 kpc) of the binary star system from the centre of the main galaxy is not unusual for stars in the host galaxy or stars originating in the merging galaxy, and therefore any constraints on the kick velocity imparted to the progenitor are poor.
first_indexed	2025-11-14T20:14:00Z
format	Article
id	nottingham-49780
institution	University of Nottingham Malaysia Campus
institution_category	Local University
last_indexed	2025-11-14T20:14:00Z
publishDate	2017
recordtype	eprints
repository_type	Digital Repository
spelling	nottingham-497802020-05-04T19:23:11Z https://eprints.nottingham.ac.uk/49780/ Follow up of GW170817 and its electromagnetic counterpart by Australian-led observing programmes Andreoni, I. Ackley, K. Cooke, J. Acharyya, A. Allison, J.R. Anderson, G.E. Ashley, M.C.B. Baade, D. Bailes, M. Bannister, K. Beardsley, A. Bessell, M.S. Bian, F. Bland, P.A. Boer, M. Booler, T. Brandeker, A. Brown, I.S. Buckley, D.A.H. Chang, S.-W. Coward, D.M. Crawford, S. Crisp, H. Crosse, B. Cucchiara, A. Cupák, M. de Gois, J.S. Deller, A. Devillepoix, H.A.R. Dobie, D. Elmer, E. Emrich, D. Farah, W. Farrell, T.J. Franzen, T. Gaensler, B.M. Galloway, D.K. Gendre, B. Giblin, T. Goobar, A. Green, J. Hancock, P.J. Hartig, B.A.D. Howell, E.J. Horsley, L. Hotan, A. Howie, R.M. Hu, L. Hu, Y. James, C.W. Johnston, S. Johnston-Hollitt, M. Kaplan, D.L. Kasliwal, M. Keane, E.F. Kenney, D. Klotz, A. Lau, R. Laugier, R. Lenc, E. Li, X. Liang, E. Lidman, C. Luvaul, L.C. Lynch, C. Ma, B. Macpherson, D. Mao, J. McClelland, D.E. McCully, C. Möller, A. Morales, M.F. Morris, D. Murphy, T. Noysena, K. Onken, C.A. Orange, N.B. Osłowski, S. Pallot, D. Paxman, J. Potter, S.B. Pritchard, T. Raja, W. Ridden-Harper, R. Romero-Colmenero, E. Sadler, E.M. Sansom, E.K. Scalzo, R.A. Schmidt, B.P. Scott, S.M. Seghouani, N. Shang, Z. Shannon, R.M. Shao, L. Shara, M.M. Sharp, R. Sokolowski, M. Sollerman, J. Staff, J. Steele, K. Sun, T. Suntzeff, N.B. Tao, C. Tingay, S. Towner, M.C. Thierry, P. Trott, C. Tucker, B.E. Väisänen, P. Krishnan, V. Venkatraman Walker, M. Wang, L. Wang, X. Wayth, R. Whiting, M. Williams, A. Williams, T. Wolf, C. Wu, C. Wu, X. Yang, J. Yuan, X. Zhang, H. Zhou, J. Zovaro, H. The discovery of the first electromagnetic counterpart to a gravitational wave signal has generated follow-up observations by over 50 facilities world-wide, ushering in the new era of multi-messenger astronomy. In this paper, we present follow-up observations of the gravitational wave event GW170817 and its electromagnetic counterpart SSS17a/DLT17ck (IAU label AT2017gfo) by 14 Australian telescopes and partner observatories as part of Australian-based and Australian-led research programs. We report early- to late-time multi-wavelength observations, including optical imaging and spectroscopy, mid-infrared imaging, radio imaging, and searches for fast radio bursts. Our optical spectra reveal that the transient source emission cooled from approximately 6 400 K to 2 100 K over a 7-d period and produced no significant optical emission lines. The spectral profiles, cooling rate, and photometric light curves are consistent with the expected outburst and subsequent processes of a binary neutron star merger. Star formation in the host galaxy probably ceased at least a Gyr ago, although there is evidence for a galaxy merger. Binary pulsars with short (100 Myr) decay times are therefore unlikely progenitors, but pulsars like PSR B1534+12 with its 2.7 Gyr coalescence time could produce such a merger. The displacement (~2.2 kpc) of the binary star system from the centre of the main galaxy is not unusual for stars in the host galaxy or stars originating in the merging galaxy, and therefore any constraints on the kick velocity imparted to the progenitor are poor. 2017-12-20 Article PeerReviewed Andreoni, I., Ackley, K., Cooke, J., Acharyya, A., Allison, J.R., Anderson, G.E., Ashley, M.C.B., Baade, D., Bailes, M., Bannister, K., Beardsley, A., Bessell, M.S., Bian, F., Bland, P.A., Boer, M., Booler, T., Brandeker, A., Brown, I.S., Buckley, D.A.H., Chang, S.-W., Coward, D.M., Crawford, S., Crisp, H., Crosse, B., Cucchiara, A., Cupák, M., de Gois, J.S., Deller, A., Devillepoix, H.A.R., Dobie, D., Elmer, E., Emrich, D., Farah, W., Farrell, T.J., Franzen, T., Gaensler, B.M., Galloway, D.K., Gendre, B., Giblin, T., Goobar, A., Green, J., Hancock, P.J., Hartig, B.A.D., Howell, E.J., Horsley, L., Hotan, A., Howie, R.M., Hu, L., Hu, Y., James, C.W., Johnston, S., Johnston-Hollitt, M., Kaplan, D.L., Kasliwal, M., Keane, E.F., Kenney, D., Klotz, A., Lau, R., Laugier, R., Lenc, E., Li, X., Liang, E., Lidman, C., Luvaul, L.C., Lynch, C., Ma, B., Macpherson, D., Mao, J., McClelland, D.E., McCully, C., Möller, A., Morales, M.F., Morris, D., Murphy, T., Noysena, K., Onken, C.A., Orange, N.B., Osłowski, S., Pallot, D., Paxman, J., Potter, S.B., Pritchard, T., Raja, W., Ridden-Harper, R., Romero-Colmenero, E., Sadler, E.M., Sansom, E.K., Scalzo, R.A., Schmidt, B.P., Scott, S.M., Seghouani, N., Shang, Z., Shannon, R.M., Shao, L., Shara, M.M., Sharp, R., Sokolowski, M., Sollerman, J., Staff, J., Steele, K., Sun, T., Suntzeff, N.B., Tao, C., Tingay, S., Towner, M.C., Thierry, P., Trott, C., Tucker, B.E., Väisänen, P., Krishnan, V. Venkatraman, Walker, M., Wang, L., Wang, X., Wayth, R., Whiting, M., Williams, A., Williams, T., Wolf, C., Wu, C., Wu, X., Yang, J., Yuan, X., Zhang, H., Zhou, J. and Zovaro, H. (2017) Follow up of GW170817 and its electromagnetic counterpart by Australian-led observing programmes. Publications of the Astronomical Society of Australia, 34 . ISSN 1323-3580 gamma-ray burst: individual: GRB170817A ; gravitational waves ; stars: neutron ; supernovae: general ; supernovae: individual: AT2017gfo https://www.cambridge.org/core/journals/publications-of-the-astronomical-society-of-australia/article/follow-up-of-gw170817-and-its-electromagnetic-counterpart-by-australianled-observing-programmes/D61359DD9A7144A2904B5F0F402C2CB9 doi:10.1017/pasa.2017.65 doi:10.1017/pasa.2017.65
spellingShingle	gamma-ray burst: individual: GRB170817A ; gravitational waves ; stars: neutron ; supernovae: general ; supernovae: individual: AT2017gfo Andreoni, I. Ackley, K. Cooke, J. Acharyya, A. Allison, J.R. Anderson, G.E. Ashley, M.C.B. Baade, D. Bailes, M. Bannister, K. Beardsley, A. Bessell, M.S. Bian, F. Bland, P.A. Boer, M. Booler, T. Brandeker, A. Brown, I.S. Buckley, D.A.H. Chang, S.-W. Coward, D.M. Crawford, S. Crisp, H. Crosse, B. Cucchiara, A. Cupák, M. de Gois, J.S. Deller, A. Devillepoix, H.A.R. Dobie, D. Elmer, E. Emrich, D. Farah, W. Farrell, T.J. Franzen, T. Gaensler, B.M. Galloway, D.K. Gendre, B. Giblin, T. Goobar, A. Green, J. Hancock, P.J. Hartig, B.A.D. Howell, E.J. Horsley, L. Hotan, A. Howie, R.M. Hu, L. Hu, Y. James, C.W. Johnston, S. Johnston-Hollitt, M. Kaplan, D.L. Kasliwal, M. Keane, E.F. Kenney, D. Klotz, A. Lau, R. Laugier, R. Lenc, E. Li, X. Liang, E. Lidman, C. Luvaul, L.C. Lynch, C. Ma, B. Macpherson, D. Mao, J. McClelland, D.E. McCully, C. Möller, A. Morales, M.F. Morris, D. Murphy, T. Noysena, K. Onken, C.A. Orange, N.B. Osłowski, S. Pallot, D. Paxman, J. Potter, S.B. Pritchard, T. Raja, W. Ridden-Harper, R. Romero-Colmenero, E. Sadler, E.M. Sansom, E.K. Scalzo, R.A. Schmidt, B.P. Scott, S.M. Seghouani, N. Shang, Z. Shannon, R.M. Shao, L. Shara, M.M. Sharp, R. Sokolowski, M. Sollerman, J. Staff, J. Steele, K. Sun, T. Suntzeff, N.B. Tao, C. Tingay, S. Towner, M.C. Thierry, P. Trott, C. Tucker, B.E. Väisänen, P. Krishnan, V. Venkatraman Walker, M. Wang, L. Wang, X. Wayth, R. Whiting, M. Williams, A. Williams, T. Wolf, C. Wu, C. Wu, X. Yang, J. Yuan, X. Zhang, H. Zhou, J. Zovaro, H. Follow up of GW170817 and its electromagnetic counterpart by Australian-led observing programmes
title	Follow up of GW170817 and its electromagnetic counterpart by Australian-led observing programmes
title_full	Follow up of GW170817 and its electromagnetic counterpart by Australian-led observing programmes
title_fullStr	Follow up of GW170817 and its electromagnetic counterpart by Australian-led observing programmes
title_full_unstemmed	Follow up of GW170817 and its electromagnetic counterpart by Australian-led observing programmes
title_short	Follow up of GW170817 and its electromagnetic counterpart by Australian-led observing programmes
title_sort	follow up of gw170817 and its electromagnetic counterpart by australian-led observing programmes
topic	gamma-ray burst: individual: GRB170817A ; gravitational waves ; stars: neutron ; supernovae: general ; supernovae: individual: AT2017gfo
url	https://eprints.nottingham.ac.uk/49780/ https://eprints.nottingham.ac.uk/49780/ https://eprints.nottingham.ac.uk/49780/

Follow up of GW170817 and its electromagnetic counterpart by Australian-led observing programmes

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