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Sökning: onr:"swepub:oai:DiVA.org:kth-315345" > Long-term Multiband...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00005102naa a2200481 4500
001oai:DiVA.org:kth-315345
003SwePub
008220704s2022 | |||||||||||000 ||eng|
009oai:DiVA.org:su-207333
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3153452 URI
0247 a https://doi.org/10.3847/1538-4365/ac6c2c2 DOI
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-2073332 URI
040 a (SwePub)kthd (SwePub)su
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Gupta, Alok C.u Aryabhatta Res Inst Observat Sci ARIES, Manora Peak 263001, Nainital, India.;Shanghai Frontiers Sci Ctr Gravitat Wave Detect, 800 Dongchuan Rd, Shanghai 200240, Peoples R China.4 aut
2451 0a Long-term Multiband Near-infrared Variability of the Blazar OJ 287 during 2007-2021
264 c 2022-06-17
264 1b American Astronomical Society,c 2022
338 a print2 rdacarrier
500 a QC 20230404
520 a We present the most extensive and well-sampled long-term multiband near-infrared (NIR) temporal and spectral variability study of OJ 287, considered to be the best candidate binary supermassive black hole blazar. These observations were made between 2007 December and 2021 November. The source underwent similar to 2-2.5 mag variations in the J, H, and Ks NIR bands. Over these long-term timescales there were no systematic trends in either flux or spectral evolution with time or with the source's flux states. However, on shorter timescales, there are significant variations in flux and spectra indicative of strong changes during different activity states. The NIR spectral energy distributions show diverse facets at each flux state, from the lowest to the highest. The spectra are, in general, consistent with a power-law spectral profile (within 10%) and many of them indicate minor changes (observationally insignificant) in the shift of the peak. The NIR spectra generally steepen during bright phases. We briefly discuss these behaviors in the context of blazar emission scenarios/mechanisms, OJ 287's well-known traditional behavior, and implications for models of the source central engine invoked for its long-term optical semiperiodic variations.
650 7a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
7001 a Kushwaha, Pankaju Aryabhatta Res Inst Observat Sci ARIES, Manora Peak 263001, Nainital, India.;Indian Inst Sci Educ & Res Mohali, Dept Phys Sci, Sect 81, Sas Nagar 140306, Punjab, India.;Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210033, Jiangsu, Peoples R China.4 aut
7001 a Carrasco, L.u Inst Nacl Astrofis Opt & Electr, Luis Enrique Erro 1, Puebla 72840, Mexico.4 aut
7001 a Xu, Haiguangu Shanghai Frontiers Sci Ctr Gravitat Wave Detect, 800 Dongchuan Rd, Shanghai 200240, Peoples R China.;Shanghai Jiao Tong Univ, Sch Phys & Astron, 800 Dongchuan Rd, Shanghai 200240, Peoples R China.4 aut
7001 a Wiita, Paul J.u Coll New Jersey, Dept Phys, 2000 Pennington Rd, Ewing, NJ 08628 USA.4 aut
7001 a Escobedo, G.u Inst Nacl Astrofis Opt & Electr, Luis Enrique Erro 1, Puebla 72840, Mexico.4 aut
7001 a Porras, A.u Inst Nacl Astrofis Opt & Electr, Luis Enrique Erro 1, Puebla 72840, Mexico.4 aut
7001 a Recillas, E.u Inst Nacl Astrofis Opt & Electr, Luis Enrique Erro 1, Puebla 72840, Mexico.4 aut
7001 a Mayya, Y. D.u Inst Nacl Astrofis Opt & Electr, Luis Enrique Erro 1, Puebla 72840, Mexico.4 aut
7001 a Chavushyan, V.u Inst Nacl Astrofis Opt & Electr, Luis Enrique Erro 1, Puebla 72840, Mexico.4 aut
7001 a Villarroel, Beatrizu Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Instituto de Astrofisica de Canarias, Spain,NORDITA, SU;Stockholm Univ, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden.4 aut0 (Swepub:su)bevi1144
7001 a Zhang, Zhongliu Inst Astrofis Canarias, Avda Via Lactea S-N, E-38205 Tenerife, Spain.;Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China.4 aut
7102 a Aryabhatta Res Inst Observat Sci ARIES, Manora Peak 263001, Nainital, India.;Shanghai Frontiers Sci Ctr Gravitat Wave Detect, 800 Dongchuan Rd, Shanghai 200240, Peoples R China.b Aryabhatta Res Inst Observat Sci ARIES, Manora Peak 263001, Nainital, India.;Indian Inst Sci Educ & Res Mohali, Dept Phys Sci, Sect 81, Sas Nagar 140306, Punjab, India.;Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210033, Jiangsu, Peoples R China.4 org
7730 t Astrophysical Journal Supplement Seriesd : American Astronomical Societyg 260:2, s. 39-q 260:2<39-x 0067-0049x 1538-4365
8564 u https://doi.org/10.3847/1538-4365/ac6c2cy Fulltext
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-315345
8564 8u https://doi.org/10.3847/1538-4365/ac6c2c
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-207333

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