تقرير
GW190814 follow-up with the optical telescope MeerLICHT
| العنوان: | GW190814 follow-up with the optical telescope MeerLICHT |
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| المؤلفون: | de Wet, S., Groot, P. J., Bloemen, S., Poole, R. Le, Klein-Wolt, M., Körding, E., McBride, V., Paterson, K., Pieterse, D. L. A., Vreeswijk, P. M., Woudt, P. |
| المصدر: | A&A 649, A72 (2021) |
| سنة النشر: | 2021 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - High Energy Astrophysical Phenomena |
| الوصف: | The Advanced LIGO and Virgo gravitational wave observatories detected a signal on 2019 August 14 during their third observing run, named GW190814. A large number of electromagnetic facilities conducted follow-up campaigns in the search for a possible counterpart to the gravitational wave event, which was made especially promising given the early source classification of a neutron star-black hole merger.We present the results of the GW follow-up campaign taken with the wide-field optical telescope MeerLICHT, located at the South African Astronomical Observatory Sutherland site. We use our results to constrain possible kilonova models. MeerLICHT observed more than 95% of the probability localisation each night for over a week in three optical bands (u,q,i) with our initial observations beginning almost 2 hours after the GW detection. We describe the search for new transients in MeerLICHT data and investigate how our limiting magnitudes can be used to constrain an AT2017gfo-like kilonova. A single new transient was found in our analysis of MeerLICHT data, which we exclude from being the electromagnetic counterpart to GW190814 due to the existence of a spatially unresolved source at the transient's coordinates in archival data. Using our limiting magnitudes, the confidence with which we can exclude the presence of an AT2017gfo-like kilonova at the distance of GW190814 was low ($<10^{-4}$). Comment: 19 pages, 6 figures, accepted by A&A |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1051/0004-6361/202040231 |
| الوصول الحر: | http://arxiv.org/abs/2103.02399Test |
| رقم الانضمام: | edsarx.2103.02399 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1051/0004-6361/202040231 |
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