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DISCOVERY OF DRAMAT...
DISCOVERY OF DRAMATIC OPTICAL VARIABILITY IN SDSS J1100+4421 : A PECULIAR RADIO-LOUD NARROW-LINE SEYFERT 1 GALAXY?
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Tanaka, Masaomi (author)
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Morokuma, Tomoki (author)
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Itoh, Ryosuke (author)
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Akitaya, Hiroshi (author)
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Tominaga, Nozomu (author)
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Saito, Yoshihiko (author)
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Stawarz, Lukasz (author)
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Tanaka, Yasuyuki T. (author)
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Gandhi, Poshak (author)
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Ali, Gamal (author)
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Aoki, Tsutomu (author)
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Contreras, Carlos (author)
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Doi, Mamoru (author)
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Essam, Ahmad (author)
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Hamed, Gamal (author)
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Hsiao, Eric Y. (author)
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Iwata, Ikuru (author)
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Kawabata, Koji S. (author)
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Kawai, Nobuyuki (author)
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Kikuchi, Yuki (author)
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Kobayashi, Naoto (author)
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Kuroda, Daisuke (author)
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Maehara, Hiroyuki (author)
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Matsumoto, Emiko (author)
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Mazzali, Paolo A. (author)
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Minezaki, Takeo (author)
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Mito, Hiroyuki (author)
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Miyata, Takashi (author)
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Miyazaki, Satoshi (author)
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Mori, Kensho (author)
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Moritani, Yuki (author)
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Morokuma-Matsui, Kana (author)
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Morrell, Nidia (author)
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Nagao, Tohru (author)
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Nakada, Yoshikazu (author)
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Nakata, Fumiaki (author)
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Noma, Chinami (author)
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Ohsuga, Ken (author)
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Okada, Norio (author)
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Phillips, Mark M. (author)
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Pian, Elena (author)
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Richmond, Michael W. (author)
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Sahu, Devendra (author)
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Sako, Shigeyuki (author)
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Sarugaku, Yuki (author)
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Shibata, Takumi (author)
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Soyano, Takao (author)
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Stritzinger, Maximilian D. (author)
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Tachibana, Yutaro (author)
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- Taddia, Francesco (author)
- Stockholms universitet,Institutionen för astronomi
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Takaki, Katsutoshi (author)
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Takey, Ali (author)
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Tarusawa, Ken'ichi (author)
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Ui, Takahiro (author)
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Ukita, Nobuharu (author)
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Urata, Yuji (author)
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Walker, Emma S. (author)
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Yoshii, Taketoshi (author)
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(creator_code:org_t)
- 2014
- 2014
- English.
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In: Astrophysical Journal Letters. - 2041-8205 .- 2041-8213. ; 793:2, s. L26-
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
Close
- We present our discovery of dramatic variability in SDSS J1100+4421 by the high-cadence transient survey Kiso Supernova Survey. The source brightened in the optical by at least a factor of three within about half a day. Spectroscopic observations suggest that this object is likely a narrow-line Seyfert 1 galaxy (NLS1) at z = 0.840, however, with unusually strong narrow emission lines. The estimated black hole mass of similar to 10(7) M-circle dot implies bolometric nuclear luminosity close to the Eddington limit. SDSS J1100+4421 is also extremely radio-loud, with a radio loudness parameter of R similar or equal to 4 x 10(2)-3 x 10(3), which implies the presence of relativistic jets. Rapid and large-amplitude optical variability of the target, reminiscent of that found in a few radio- and gamma-ray-loud NLS1s, is therefore produced most likely in a blazar-like core. The 1.4 GHz radio image of the source shows an extended structure with a linear size of about 100 kpc. If SDSS J1100+4421 is a genuine NLS1, as suggested here, this radio structure would then be the largest ever discovered in this type of active galaxies.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- galaxies: active
- galaxies: individual (SDSS J110006.07+442144.3)
- galaxies: jets
- galaxies: Seyfert
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
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Tanaka, Masaomi
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Morokuma, Tomoki
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Itoh, Ryosuke
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Akitaya, Hiroshi
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Tominaga, Nozomu
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Saito, Yoshihiko
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show more...
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Stawarz, Lukasz
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Tanaka, Yasuyuki ...
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Gandhi, Poshak
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Ali, Gamal
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Aoki, Tsutomu
-
Contreras, Carlo ...
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Doi, Mamoru
-
Essam, Ahmad
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Hamed, Gamal
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Hsiao, Eric Y.
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Iwata, Ikuru
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Kawabata, Koji S ...
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Kawai, Nobuyuki
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Kikuchi, Yuki
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Kobayashi, Naoto
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Kuroda, Daisuke
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Maehara, Hiroyuk ...
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Matsumoto, Emiko
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Mazzali, Paolo A ...
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Minezaki, Takeo
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Mito, Hiroyuki
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Miyata, Takashi
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Miyazaki, Satosh ...
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Mori, Kensho
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Moritani, Yuki
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Morokuma-Matsui, ...
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Morrell, Nidia
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Nagao, Tohru
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Nakada, Yoshikaz ...
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Nakata, Fumiaki
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Noma, Chinami
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Ohsuga, Ken
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Okada, Norio
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Phillips, Mark M ...
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Pian, Elena
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Richmond, Michae ...
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Sahu, Devendra
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Sako, Shigeyuki
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Sarugaku, Yuki
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Shibata, Takumi
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Soyano, Takao
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Stritzinger, Max ...
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Tachibana, Yutar ...
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Taddia, Francesc ...
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Takaki, Katsutos ...
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Takey, Ali
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Tarusawa, Ken'ic ...
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Ui, Takahiro
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Ukita, Nobuharu
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Urata, Yuji
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Walker, Emma S.
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Yoshii, Taketosh ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
- Articles in the publication
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Astrophysical Jo ...
- By the university
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Stockholm University