| Texto completo | |
| Autor(es): |
Gupta, Alok C.
[1]
;
Tripathi, Ashutosh
[2, 3]
;
Wiita, Paul J.
[4]
;
Kushwaha, Pankaj
[5]
;
Zhang, Zhongli
[6]
;
Bambi, Cosimo
[2, 3, 7]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Aryabhatta Res Inst Observat Sci, ARIES, Naini Tal 263001 - India
[2] Fudan Univ, Dept Phys, 220 Handan Rd, Shanghai 200433 - Peoples R China
[3] Fudan Univ, Ctr Field Theory & Particle Phys, 220 Handan Rd, Shanghai 200433 - Peoples R China
[4] Coll New Jersey, Dept Phys, POB 7718, Ewing, NJ 08628 - USA
[5] Univ Sao Paulo, Dept Astron, IAG, BR-05508090 Sao Paulo - Brazil
[6] Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030 - Peoples R China
[7] Eberhard Karls Univ Tubingen, Theoret Astrophys, D-72076 Tubingen - Germany
Número total de Afiliações: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Monthly Notices of the Royal Astronomical Society; v. 484, n. 4, p. 5785-5790, APR 2019. |
| Citações Web of Science: | 1 |
| Resumo | |
We detected a possible quasi-periodic oscillation (QPO) of similar to 71 d in the 0.1-300 GeV gamma-ray Fermi-Large Area Telescope light curve of the high-redshift flat spectrum radio quasar B2 1520+31. We identify and confirm that quasi-period by Lomb-Scargle periodogram and weighted wavelet Z-transform analyses. Using this QPO period, and assuming it originates from accretion disc fluctuations at the innermost stable circular orbit, we estimate the central supermassive black hole mass to range between similar to 5.4 x 10(9) M-circle dot for a non-rotating black hole and similar to 3.4 x 10(10) M-circle dot for a maximally rotating black hole. We briefly discuss other possible radio-loud active galactic nuclei emission models capable of producing a gamma-ray QPO of such a period in a blazar. (AU) | |
| Processo FAPESP: | 15/13933-0 - Investigação de jatos relativísticos e sua emissão em altas energia por meio da análise de observações em multi-comprimenti-de-onda |
| Beneficiário: | Pankaj Kushwaha |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |