Swift-XRT Follow-up of Gravitational-wave Triggers in the Second Advanced LIGO/Virgo Observing Run
| Autor: | Michael H. Siegel, Judith Racusin, J. A. Kennea, Hans A. Krimm, N. P. M. Kuin, David Palmer, B. Sbarufatti, Dieter H. Hartmann, A. Tohuvavohu, M. Perri, S. R. Oates, M. de Pasquale, A. A. Breeveld, N. J. Klingler, S. W. K. Emery, Gianpiero Tagliaferri, Frank Marshall, Sergio Campana, A. Y. Lien, Valerio D'Elia, Caryl Gronwall, Peter J. Brown, A. Melandri, D. B. Malesani, Phil Evans, Paolo Giommi, J. P. Osborne, A. P. Beardmore, Javier A. García, P. D'Avanzo, T. Sakamoto, K. L. Page, Antonino D'Ai, Scott Barthelmy, David N. Burrows, Eleonora Troja, Giancarlo Cusumano, J. A. Nousek, P. T. O'Brien, S. B. Cenko |
|---|---|
| Přispěvatelé: | ITA, USA, GBR |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Active galactic nucleus
media_common.quotation_subject Astrophysics::High Energy Astrophysical Phenomena Population FOS: Physical sciences Astrophysics Surveys X-ray sources 01 natural sciences Gravitational waves Observatory 0103 physical sciences Astronomy data analysis Gamma-ray bursts X-ray surveys Catalogs Gravitational wave sources education 010303 astronomy & astrophysics media_common High Energy Astrophysical Phenomena (astro-ph.HE) Physics education.field_of_study 010308 nuclear & particles physics Gravitational wave Astronomy and Astrophysics LIGO Neutron star Space and Planetary Science Sky Astrophysics - High Energy Astrophysical Phenomena Gamma-ray burst |
| Zdroj: | Klingler, N J, Kennea, J A, Evans, P A, Tohuvavohu, A, Cenko, S B, Barthelmy, S D, Beardmore, A P, Troja, E, Brown, P J, Burrows, D N, Campana, S, Cusumano, G, D'Ai, A, D'Avanzo, P, D'Elia, V, de Pasquale, M, Emery, S W K, Garcia, J, Giommi, P, Gronwall, C, Hartmann, D H, Krimm, H A, Kuin, N P M, Lien, A, Malesani, D B, Marshall, F E, Melandri, A, Nousek, J A, Oates, S R, O'Brien, P T, Osborne, J P, Page, K L, Palmer, D M, Perri, M, Racusin, J L, Siegel, M H, Sakamoto, T, Sbarufatti, B, Tagliaferri, G & Troja, E 2019, ' Swift-XRT Follow-up of Gravitational-wave Triggers in the Second Advanced LIGO/Virgo Observing Run ', Astrophysical Journal Supplement Series, vol. 245, no. 1, 15 . https://doi.org/10.3847/1538-4365/ab4ea2 Klingler, N J, Kennea, J A, Evans, P A, Tohuvavohu, A, Cenko, S B, Barthelmy, S D, Beardmore, A P, Breeveld, A A, Brown, P J, Burrows, D N, Campana, S, Cusumano, G, D'Ai, A, D'Avanzo, P, D'Elia, V, de Pasquale, M, Emery, S W K, Garcia, J, Giommi, P, Gronwall, C, Hartmann, D H, Krimm, H A, Kuin, N P M, Lien, A, Malesani, D B, Marshall, F E, Melandri, A, Nousek, J A, Oates, S R, O'Brien, P T, Osborne, J P, Page, K L, Palmer, D M, Perri, M, Racusin, J L, Siegel, M H, Sakamoto, T, Sbarufatti, B, Tagliaferri, G & Troja, E 2019, ' Swift-XRT Follow-up of Gravitational-wave Triggers in the Second Advanced LIGO/Virgo Observing Run ', Astrophysical Journal Supplement Series, vol. 245, no. 1, 15 . https://doi.org/10.3847/1538-4365/ab4ea2 |
| DOI: | 10.3847/1538-4365/ab4ea2 |
| Popis: | The Neil Gehrels Swift Observatory carried out prompt searches for gravitational wave (GW) events detected by the LIGO/Virgo Collaboration (LVC) during the second observing run ("O2"). Swift performed extensive tiling of eight LVC triggers, two of which had very low false-alarm rates (GW 170814 and the epochal GW 170817), indicating a high confidence of being astrophysical in origin; the latter was the first GW event to have an electromagnetic counterpart detected. In this paper we describe the follow-up performed during O2 and the results of our searches. No GW electromagnetic counterparts were detected; this result is expected, as GW 170817 remained the only astrophysical event containing at least one neutron star after LVC's later retraction of some events. A number of X-ray sources were detected, with the majority of identified sources being active galactic nuclei. We discuss the detection rate of transient X-ray sources and their implications in the O2 tiling searches. Finally, we describe the lessons learned during O2, and how these are being used to improve the \swift\ follow-up of GW events. In particular, we simulate a population of GRB afterglows to evaluate our source ranking system's ability to differentiate them from unrelated and uncatalogued X-ray sources. We find that $\approx$60-70% of afterglows whose jets are oriented towards Earth will be given high rank (i.e., "interesting" designation) by the completion of our second follow-up phase (assuming their location in the sky was observed), but that this fraction can be increased to nearly 100% by performing a third follow-up observation of sources exhibiting fading behavior. Comment: 18 pages, 4 figures, 2 tables, accepted for publication in ApJS |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|