Observational Implications of OJ 287’s Predicted 2022 Disk Impact in the Black Hole Binary Model Article Swipe

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M. J. Valtonen , Lankeswar Dey , A. Gopakumar , S. Zoła , A. Lähteenmäki , M. Tornikoski , Alok C. Gupta , T. Pursimo , Emil Knudstrup , José L. Gómez , R. Hudec , M. Jelínek , J. Štrobl , A. Berdyugin , S. Ciprini , D. Reichart , Vladimir Kouprianov , Katsura Matsumoto , M. Dróżdż , M. Mugrauer , A. C. Sadun , M. Żejmo , Aimo Sillanpää , H. J. Lehto , K. Nilsson , Ryo Imazawa , Makoto Uemura ·

YOU? · · 2023 · Open Access · · DOI: https://doi.org/10.17615/m8g4-cs33

We present a summary of the results of the OJ 287 observational campaign, which was carried out during the 2021/2022 observational season. This season is special in the binary model because the major axis of the precessing binary happens to lie almost exactly in the plane of the accretion disc of the primary. This leads to pairs of almost identical impacts between the secondary black hole and the accretion disk in 2005 and 2022. In 2005, a special flare called “blue flash” was observed 35 days after the disk impact, which should have also been verifiable in 2022. We did observe a similar flash and were able to obtain more details of its properties. We describe this in the framework of expanding cloud models. In addition, we were able to identify the flare arising exactly at the time of the disc crossing from its photo-polarimetric and gamma-ray properties. This is an important identification, as it directly confirms the orbit model. Moreover, we saw a huge flare that lasted only one day. We may understand this as the lighting up of the jet of the secondary black hole when its Roche lobe is suddenly flooded by the gas from the primary disk. Therefore, this may be the first time we directly observed the secondary black hole in the OJ 287 binary system.

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Observational study Physics Astrophysics Binary number Binary black hole Mathematics Statistics Gravitational wave Arithmetic

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Type: article
Language: en
Landing Page: https://doi.org/10.17615/m8g4-cs33
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Title: Observational Implications of OJ 287’s Predicted 2022 Disk Impact in the Black Hole Binary Model

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Publication year: 2023

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Publication date: 2023-08-04

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Authors: M. J. Valtonen, Lankeswar Dey, A. Gopakumar, S. Zoła, A. Lähteenmäki, M. Tornikoski, Alok C. Gupta, T. Pursimo, Emil Knudstrup, José L. Gómez, R. Hudec, M. Jelínek, J. Štrobl, A. Berdyugin, S. Ciprini, D. Reichart, Vladimir Kouprianov, Katsura Matsumoto, M. Dróżdż, M. Mugrauer, A. C. Sadun, M. Żejmo, Aimo Sillanpää, H. J. Lehto, K. Nilsson, Ryo Imazawa, Makoto Uemura

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Landing page: https://doi.org/10.17615/m8g4-cs33

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Concepts: Observational study, Physics, Astrophysics, Binary number, Binary black hole, Mathematics, Statistics, Gravitational wave, Arithmetic

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abstract_inverted_index.leads	54
abstract_inverted_index.major	32
abstract_inverted_index.model	29
abstract_inverted_index.orbit	158
abstract_inverted_index.pairs	56
abstract_inverted_index.plane	45
abstract_inverted_index.which	13, 90
abstract_inverted_index.almost	41, 58
abstract_inverted_index.binary	28, 37, 219
abstract_inverted_index.called	79
abstract_inverted_index.during	17
abstract_inverted_index.lasted	167
abstract_inverted_index.model.	159
abstract_inverted_index.obtain	108
abstract_inverted_index.season	23
abstract_inverted_index.should	91
abstract_inverted_index.arising	133
abstract_inverted_index.because	30
abstract_inverted_index.between	61
abstract_inverted_index.carried	15
abstract_inverted_index.details	110
abstract_inverted_index.exactly	42, 134
abstract_inverted_index.flooded	193
abstract_inverted_index.happens	38
abstract_inverted_index.impact,	89
abstract_inverted_index.impacts	60
abstract_inverted_index.models.	123
abstract_inverted_index.observe	100
abstract_inverted_index.present	1
abstract_inverted_index.primary	199
abstract_inverted_index.results	6
abstract_inverted_index.season.	21
abstract_inverted_index.similar	102
abstract_inverted_index.special	25, 77
abstract_inverted_index.summary	3
abstract_inverted_index.system.	220
abstract_inverted_index.“blue	80
abstract_inverted_index.confirms	156
abstract_inverted_index.crossing	141
abstract_inverted_index.describe	115
abstract_inverted_index.directly	155, 209
abstract_inverted_index.flash”	81
abstract_inverted_index.identify	130
abstract_inverted_index.lighting	177
abstract_inverted_index.observed	83, 210
abstract_inverted_index.primary.	52
abstract_inverted_index.suddenly	192
abstract_inverted_index.2021/2022	19
abstract_inverted_index.Moreover,	160
abstract_inverted_index.accretion	48, 68
abstract_inverted_index.addition,	125
abstract_inverted_index.campaign,	12
abstract_inverted_index.expanding	121
abstract_inverted_index.framework	119
abstract_inverted_index.gamma-ray	146
abstract_inverted_index.identical	59
abstract_inverted_index.important	151
abstract_inverted_index.secondary	63, 184, 212
abstract_inverted_index.Therefore,	201
abstract_inverted_index.precessing	36
abstract_inverted_index.understand	173
abstract_inverted_index.verifiable	95
abstract_inverted_index.properties.	113, 147
abstract_inverted_index.observational	11, 20
abstract_inverted_index.identification,	152
abstract_inverted_index.photo-polarimetric	144
cited_by_percentile_year
countries_distinct_count	0
institutions_distinct_count	27
citation_normalized_percentile.value	0.13748274
citation_normalized_percentile.is_in_top_1_percent	False
citation_normalized_percentile.is_in_top_10_percent	False