NAOC Open IR
Multi-wavelength observations of the BL Lac object FermiJ1544-0649: One year after its awakening
Tam, P. H. T.1; Pal, P. S.1; Cui, Y. D.1; Jiang, N.2; Sotnikova, Y.3; Yang, C. W.2,4; Wang, L. Z.5; Tang, B. T.1; Li, Y. B.6,7,8; Mao, J.6,7,9; Kong, A. K. H.10; Zhong, Z. H.2; Ding, J.11; Mufakharov, T.12,13; Fan, J. F.14; Dou, L. M.14; Shen, R. F.1; Ai, Y. L.1
2020-06-01
Source PublicationJOURNAL OF HIGH ENERGY ASTROPHYSICS
ISSN2214-4048
Volume26Pages:45-57
AbstractWe report observations of a transient source FermiJ1544-0649 from radio to gamma-rays. FermiJ1544-0649 was discovered by the Fermi-LAT in May 2017. Follow-up Swift-XRT observations revealed three flaring episodes through March 2018, and the peak X-ray flux is about 10(3) higher than the ROSAT all-sky survey (RASS) flux upper limit. Optical spectral measurements taken by the Magellan 6.5-m telescope and the Lick-Shane telescope both show a largely featureless spectrum, strengthening the BL Lac interpretation first proposed by Bruni et al. (2018). The optical and mid-infrared (MIR) emission goes to a higher state in 2018, when the flux in high energies goes down to a lower level. Our RATAN-600 m measurements at 4.8 GHz and 8.2 GHz do not indicate any significant radio flux variation over the monitoring seasons in 2017 and 2018, nor deviate from the archival NVSS flux level. During GeV flaring times, the spectrum is very hard (Gamma(gamma) similar to 1.7) in the GeV band and at times also very hard ((Gamma(X) less than or similar to 2) in the X-rays, similar to a high-synchrotron-peak (or even an extreme) BL Lac object, making FermiJ1544-0649 a good target for ground-based Cherenkov telescopes. (C) 2020 Elsevier B.V. All rights reserved.
KeywordGalaxies BL Lacertae objects: General Radiation mechanisms: Non-thermal Surveys
Funding OrganizationNational Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; NSFC ; NSFC ; Hundred Talent Program of Chinese Academy of Sciences ; Hundred Talent Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences ; Oversea Talent Program of Yunnan Province ; Oversea Talent Program of Yunnan Province ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Planetary Science Division of NASA ; Planetary Science Division of NASA ; ESA Member States ; ESA Member States ; NASA ; NASA ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; NSFC ; NSFC ; Hundred Talent Program of Chinese Academy of Sciences ; Hundred Talent Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences ; Oversea Talent Program of Yunnan Province ; Oversea Talent Program of Yunnan Province ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Planetary Science Division of NASA ; Planetary Science Division of NASA ; ESA Member States ; ESA Member States ; NASA ; NASA ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; NSFC ; NSFC ; Hundred Talent Program of Chinese Academy of Sciences ; Hundred Talent Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences ; Oversea Talent Program of Yunnan Province ; Oversea Talent Program of Yunnan Province ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Planetary Science Division of NASA ; Planetary Science Division of NASA ; ESA Member States ; ESA Member States ; NASA ; NASA ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; NSFC ; NSFC ; Hundred Talent Program of Chinese Academy of Sciences ; Hundred Talent Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences ; Oversea Talent Program of Yunnan Province ; Oversea Talent Program of Yunnan Province ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Planetary Science Division of NASA ; Planetary Science Division of NASA ; ESA Member States ; ESA Member States ; NASA ; NASA
DOI10.1016/j.jheap.2020.02.004
WOS KeywordHUBBLE-SPACE-TELESCOPE ; BROAD ABSORPTION-LINE ; SYNCHROTRON EMISSION ; RAY-SPECTRA ; M87 JET ; GALAXIES ; FIELD ; VIEW ; SKY
Language英语
Funding ProjectNational Science Foundation of China (NSFC)[11633007] ; National Science Foundation of China (NSFC)[11661161010] ; National Science Foundation of China (NSFC)[U1731136] ; NSFC[11833007] ; NSFC[11421303] ; NSFC[11673062] ; NSFC[11733001] ; NSFC[U1531245] ; Hundred Talent Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences[KJZD-EW-M06] ; Oversea Talent Program of Yunnan Province ; Chinese Academy of Sciences (CAS) ; Planetary Science Division of NASA ; ESA Member States ; NASA
Funding OrganizationNational Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; NSFC ; NSFC ; Hundred Talent Program of Chinese Academy of Sciences ; Hundred Talent Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences ; Oversea Talent Program of Yunnan Province ; Oversea Talent Program of Yunnan Province ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Planetary Science Division of NASA ; Planetary Science Division of NASA ; ESA Member States ; ESA Member States ; NASA ; NASA ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; NSFC ; NSFC ; Hundred Talent Program of Chinese Academy of Sciences ; Hundred Talent Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences ; Oversea Talent Program of Yunnan Province ; Oversea Talent Program of Yunnan Province ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Planetary Science Division of NASA ; Planetary Science Division of NASA ; ESA Member States ; ESA Member States ; NASA ; NASA ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; NSFC ; NSFC ; Hundred Talent Program of Chinese Academy of Sciences ; Hundred Talent Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences ; Oversea Talent Program of Yunnan Province ; Oversea Talent Program of Yunnan Province ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Planetary Science Division of NASA ; Planetary Science Division of NASA ; ESA Member States ; ESA Member States ; NASA ; NASA ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; NSFC ; NSFC ; Hundred Talent Program of Chinese Academy of Sciences ; Hundred Talent Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences ; Oversea Talent Program of Yunnan Province ; Oversea Talent Program of Yunnan Province ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Planetary Science Division of NASA ; Planetary Science Division of NASA ; ESA Member States ; ESA Member States ; NASA ; NASA
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000539289100004
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/83184
Collection中国科学院国家天文台
Corresponding AuthorTam, P. H. T.
Affiliation1.Sun Yat Sen Univ, Sch Phys & Astron, Guangzhou 510275, Peoples R China
2.Univ Sci & Technol China, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China
3.Russian Acad Sci, Special Astrophys Observ, Nizhnii Arkhyz 369167, Russia
4.Polar Res Inst China, 451 Jinqiao Rd, Shanghai 200136, Peoples R China
5.Chinese Acad Sci, China Chile Joint Ctr Astron, South Amer Ctr Astron, Camino El Observ 1515, Santiago, Chile
6.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China
7.Chinese Acad Sci, Ctr Astron Megasci, 20A Datun Rd, Beijing 100012, Peoples R China
8.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
9.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Yunnan, Peoples R China
10.Natl Tsing Hua Univ, Inst Astron, 101,Sect 2 Kuang Fu Rd, Hsinchu 30013, Taiwan
11.Univ Calif Santa Cruz, Dept Astron & Astrophys, 1156 High St, Santa Cruz, CA 95060 USA
12.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
13.Kazan Fed Univ, 18 Kremlyovskaya St, Kazan 420008, Russia
14.Guangzhou Univ, Ctr Astrophys, Guangzhou 510006, Peoples R China
Recommended Citation
GB/T 7714
Tam, P. H. T.,Pal, P. S.,Cui, Y. D.,et al. Multi-wavelength observations of the BL Lac object FermiJ1544-0649: One year after its awakening[J]. JOURNAL OF HIGH ENERGY ASTROPHYSICS,2020,26:45-57.
APA Tam, P. H. T..,Pal, P. S..,Cui, Y. D..,Jiang, N..,Sotnikova, Y..,...&Ai, Y. L..(2020).Multi-wavelength observations of the BL Lac object FermiJ1544-0649: One year after its awakening.JOURNAL OF HIGH ENERGY ASTROPHYSICS,26,45-57.
MLA Tam, P. H. T.,et al."Multi-wavelength observations of the BL Lac object FermiJ1544-0649: One year after its awakening".JOURNAL OF HIGH ENERGY ASTROPHYSICS 26(2020):45-57.
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