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Naslov:Periodic gamma-ray modulation of the blazar PG 1553+113 confirmed by Fermi-LAT and multiwavelength observations
Avtorji:ID Abdollahi, S. (Avtor)
ID Baldini, L. (Avtor)
ID Barbiellini, G. (Avtor)
ID Bellazzini, R. (Avtor)
ID Berenji, B. (Avtor)
ID Bissaldi, E. (Avtor)
ID Blandford, R. D. (Avtor)
ID Bonino, R. (Avtor)
ID Bruel, P. (Avtor)
ID Zaharijas, Gabrijela (Avtor), et al.
Datoteke:URL https://iopscience.iop.org/article/10.3847/1538-4357/ad64c5
 
.pdf Abdollahi_2024_ApJ_976_203.pdf (2,22 MB)
MD5: 2BE6FF0BA33450A6F978E075DE9B43C0
 
URL https://iopscience.iop.org/article/10.3847/1538-4357/ad64c5
 
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Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:Abstract A 2.1 yr periodic oscillation of the gamma-ray flux from the blazar PG 1553+113 has previously been tentatively identified in ∼7 yr of data from the Fermi Large Area Telescope. After 15 yr of Fermi sky-survey observations, doubling the total time range, we report >7 cycle gamma-ray modulation with an estimated significance of 4σ against stochastic red noise. Independent determinations of oscillation period and phase in the earlier and the new data are in close agreement (chance probability <0.01). Pulse timing over the full light curve is also consistent with a coherent periodicity. Multiwavelength new data from Swift X-Ray Telescope, Burst Alert Telescope, and UVOT, and from KAIT, Catalina Sky Survey, All-Sky Automated Survey for Supernovae, and Owens Valley Radio Observatory ground-based observatories as well as archival Rossi X-Ray Timing Explorer satellite-All Sky Monitor data, published optical data of Tuorla, and optical historical Harvard plates data are included in our work. Optical and radio light curves show clear correlations with the gamma-ray modulation, possibly with a nonconstant time lag for the radio flux. We interpret the gamma-ray periodicity as possibly arising from a pulsational accretion flow in a sub-parsec binary supermassive black hole system of elevated mass ratio, with orbital modulation of the supplied material and energy in the jet. Other astrophysical scenarios introduced include instabilities, disk and jet precession, rotation or nutation, and perturbations by massive stars or intermediate-mass black holes in polar orbit.
Ključne besede:gamma rays, AGNs
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:01.01.2024
Leto izida:2024
Št. strani:str. 1-18
Številčenje:Vol. 976, no. 2, [article no.] 203
PID:20.500.12556/RUNG-9765 Novo okno
ISSN:0004-637X
COBISS.SI-ID:222101763 Novo okno
UDK:52
ISSN pri članku:1538-4357
eISSN:1538-4357
DOI:10.3847/1538-4357/ad64c5 Novo okno
NUK URN:URN:SI:UNG:REP:ZMC4CPDT
Datum objave v RUNG:13.01.2025
Število ogledov:650
Število prenosov:10
Metapodatki:XML DC-XML DC-RDF
:
ABDOLLAHI, S., BALDINI, L., BARBIELLINI, G., BELLAZZINI, R., BERENJI, B., BISSALDI, E., BLANDFORD, R. D., BONINO, R., BRUEL, P. in ZAHARIJAS, Gabrijela, 2024, Periodic gamma-ray modulation of the blazar PG 1553+113 confirmed by Fermi-LAT and multiwavelength observations. The Astrophysical journal [na spletu]. 2024. Vol. 976, no. 2,  203, p. 1–18. [Dostopano 24 april 2025]. DOI 10.3847/1538-4357/ad64c5. Pridobljeno s: https://repozitorij.ung.si/IzpisGradiva.php?lang=slv&id=9765
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Gradivo je del revije

Naslov:The Astrophysical journal
Skrajšan naslov:Astrophys. j.
Založnik:University of Chicago Press for the American Astronomical Society
ISSN:1538-4357
COBISS.SI-ID:515079705 Novo okno

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:25.11.2024
Licenca:Drugo
Opis:https://iopscience.iop.org/info/page/text-and-data-mining
Začetek licenciranja:25.11.2024

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