Refining the OJ 287 2022 impact flare arrival epoch

2023
journal article
article
16
dc.abstract.enThe bright blazar OJ 287 routinely parades high brightness bremsstrahlung flares, which are explained as being a result of a secondary supermassive black hole (SMBH) impacting the accretion disc of a more massive primary SMBH in a binary system. The accretion disc is not rigid but rather bends in a calculable way due to the tidal influence of the secondary. Next, we refer to this phenomenon as a variable disc level. We begin by showing that these flares occur at times predicted by a simple analytical formula, based on general relativity inspired modified Kepler equation, which explains impact flares since 1888. The 2022 impact flare, namely flare number 26, is rather peculiar as it breaks the typical pattern of two impact flares per 12-yr cycle. This is the third bremsstrahlung flare of the current cycle that follows the already observed 2015 and 2019 impact flares from OJ 287. It turns out that the arrival epoch of flare number 26 is sensitive to the level of primary SMBH’s accretion disc relative to its mean level in our model. We incorporate these tidally induced changes in the level of the accretion disc to infer that the thermal flare should have occurred during 2022 July–August, when it was not possible to observe it from the Earth. Thereafter, we explore possible observational evidence for certain pre-flare activity by employing spectral and polarimetric data from our campaigns in 2004/05 and 2021/22. We point out theoretical and observational implications of two observed mini-flares during 2022 January–February.pl
dc.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomicznepl
dc.contributor.authorValtonen, Mauri J.pl
dc.contributor.authorZoła, Stanisław - 132934 pl
dc.contributor.authorGopakumar, A.pl
dc.contributor.authorLähteenmäki, Annepl
dc.contributor.authorTornikoski, Merjapl
dc.contributor.authorDey, Lankeswarpl
dc.contributor.authorGupta, Alok C.pl
dc.contributor.authorPursimo, Tapiopl
dc.contributor.authorKnudstrup, Emilpl
dc.contributor.authorGomez, Jose L.pl
dc.contributor.authorHudec, Renepl
dc.contributor.authorJelínek, Martinpl
dc.contributor.authorŠtrobl, Janpl
dc.contributor.authorBerdyugin, Andrei V.pl
dc.contributor.authorCiprini, Stefanopl
dc.contributor.authorReichart, Daniel E.pl
dc.contributor.authorKouprianov, Vladimir V.pl
dc.contributor.authorMatsumoto, Katsurapl
dc.contributor.authorDrozdz, Marekpl
dc.contributor.authorMugrauer, Markuspl
dc.contributor.authorSadun, Albertopl
dc.contributor.authorZejmo, Michalpl
dc.contributor.authorSillanpää, Aimopl
dc.contributor.authorLehto, Harry J.pl
dc.contributor.authorNilsson, Karipl
dc.contributor.authorImazawa, Ryopl
dc.contributor.authorUemura, Makotopl
dc.date.accessioned2023-12-19T15:39:51Z
dc.date.available2023-12-19T15:39:51Z
dc.date.issued2023pl
dc.date.openaccess0
dc.description.accesstimew momencie opublikowania
dc.description.number4pl
dc.description.physical6143-6155pl
dc.description.versionostateczna wersja wydawcy
dc.description.volume521pl
dc.identifier.doi10.1093/mnras/stad922pl
dc.identifier.eissn1365-2966pl
dc.identifier.issn0035-8711pl
dc.identifier.urihttps://ruj.uj.edu.pl/xmlui/handle/item/324604
dc.languageengpl
dc.language.containerengpl
dc.rightsUdzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa*
dc.rights.licenceCC-BY
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/legalcode.pl*
dc.share.typeotwarte czasopismo
dc.subject.enaccretionpl
dc.subject.enaccretion discspl
dc.subject.engravitational wavespl
dc.subject.enBL Lacertae objects: individual: OJ 287pl
dc.subject.engalaxies: jetspl
dc.subject.enquasars: supermassive black holespl
dc.subtypeArticlepl
dc.titleRefining the OJ 287 2022 impact flare arrival epochpl
dc.title.journalMonthly Notices of the Royal Astronomical Societypl
dc.typeJournalArticlepl
dspace.entity.typePublication
dc.abstract.enpl
The bright blazar OJ 287 routinely parades high brightness bremsstrahlung flares, which are explained as being a result of a secondary supermassive black hole (SMBH) impacting the accretion disc of a more massive primary SMBH in a binary system. The accretion disc is not rigid but rather bends in a calculable way due to the tidal influence of the secondary. Next, we refer to this phenomenon as a variable disc level. We begin by showing that these flares occur at times predicted by a simple analytical formula, based on general relativity inspired modified Kepler equation, which explains impact flares since 1888. The 2022 impact flare, namely flare number 26, is rather peculiar as it breaks the typical pattern of two impact flares per 12-yr cycle. This is the third bremsstrahlung flare of the current cycle that follows the already observed 2015 and 2019 impact flares from OJ 287. It turns out that the arrival epoch of flare number 26 is sensitive to the level of primary SMBH’s accretion disc relative to its mean level in our model. We incorporate these tidally induced changes in the level of the accretion disc to infer that the thermal flare should have occurred during 2022 July–August, when it was not possible to observe it from the Earth. Thereafter, we explore possible observational evidence for certain pre-flare activity by employing spectral and polarimetric data from our campaigns in 2004/05 and 2021/22. We point out theoretical and observational implications of two observed mini-flares during 2022 January–February.
dc.affiliationpl
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomiczne
dc.contributor.authorpl
Valtonen, Mauri J.
dc.contributor.authorpl
Zoła, Stanisław - 132934
dc.contributor.authorpl
Gopakumar, A.
dc.contributor.authorpl
Lähteenmäki, Anne
dc.contributor.authorpl
Tornikoski, Merja
dc.contributor.authorpl
Dey, Lankeswar
dc.contributor.authorpl
Gupta, Alok C.
dc.contributor.authorpl
Pursimo, Tapio
dc.contributor.authorpl
Knudstrup, Emil
dc.contributor.authorpl
Gomez, Jose L.
dc.contributor.authorpl
Hudec, Rene
dc.contributor.authorpl
Jelínek, Martin
dc.contributor.authorpl
Štrobl, Jan
dc.contributor.authorpl
Berdyugin, Andrei V.
dc.contributor.authorpl
Ciprini, Stefano
dc.contributor.authorpl
Reichart, Daniel E.
dc.contributor.authorpl
Kouprianov, Vladimir V.
dc.contributor.authorpl
Matsumoto, Katsura
dc.contributor.authorpl
Drozdz, Marek
dc.contributor.authorpl
Mugrauer, Markus
dc.contributor.authorpl
Sadun, Alberto
dc.contributor.authorpl
Zejmo, Michal
dc.contributor.authorpl
Sillanpää, Aimo
dc.contributor.authorpl
Lehto, Harry J.
dc.contributor.authorpl
Nilsson, Kari
dc.contributor.authorpl
Imazawa, Ryo
dc.contributor.authorpl
Uemura, Makoto
dc.date.accessioned
2023-12-19T15:39:51Z
dc.date.available
2023-12-19T15:39:51Z
dc.date.issuedpl
2023
dc.date.openaccess
0
dc.description.accesstime
w momencie opublikowania
dc.description.numberpl
4
dc.description.physicalpl
6143-6155
dc.description.version
ostateczna wersja wydawcy
dc.description.volumepl
521
dc.identifier.doipl
10.1093/mnras/stad922
dc.identifier.eissnpl
1365-2966
dc.identifier.issnpl
0035-8711
dc.identifier.uri
https://ruj.uj.edu.pl/xmlui/handle/item/324604
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa
dc.rights.licence
CC-BY
dc.rights.uri*
http://creativecommons.org/licenses/by/4.0/legalcode.pl
dc.share.type
otwarte czasopismo
dc.subject.enpl
accretion
dc.subject.enpl
accretion discs
dc.subject.enpl
gravitational waves
dc.subject.enpl
BL Lacertae objects: individual: OJ 287
dc.subject.enpl
galaxies: jets
dc.subject.enpl
quasars: supermassive black holes
dc.subtypepl
Article
dc.titlepl
Refining the OJ 287 2022 impact flare arrival epoch
dc.title.journalpl
Monthly Notices of the Royal Astronomical Society
dc.typepl
JournalArticle
dspace.entity.type
Publication
Affiliations

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