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Multiwavelength observations of the blazar BL Lacertae: a new fast TeV gamma-ray flare

التفاصيل البيبلوغرافية
العنوان: Multiwavelength observations of the blazar BL Lacertae: a new fast TeV gamma-ray flare
المؤلفون: Abeysekara, A.U., Benbow, W., Bird, R., Brantseg, T., Brose, R., Buchovecky, M., Buckley, J.H., Bugaev, V., Connolly, M.P., Cui, W., Daniel, M.K., Falcone, A., Feng, Q., Finley, J.P., Fortson, L., Furniss, A., Gillanders, G.H., Gunawardhana, I., Huetten, M., Hanna, D., Hervet, O., Holder, J., Hughes, G., Humensky, T.B., Johnson, C.A., Kaaret, P., Kar, P., Kertzman, M., Krennrich, F., Lang, M.J., Lin, T.T.Y., McArthur, S., Moriarty, P., Mukherjee, R., O'Brien, S., Ong, R.A., Otte, A.N., Park, N., Petrashyk, A., Pohl, M., Pueschel, E., Quinn, J., Ragan, K., Reynolds, P.T., Richards, G.T., Roache, E., Rulten, C., Sadeh, I., Santander, M., Sembroski, G.H., Shahinyan, K., Wakely, S.P., Weinstein, A., Wells, R.M., Wilcox, P., Williams, D.A., Zitzer, B., Jorstad, Svetlana G., Marscher, Alan P., Lister, M.L., Kovalev, Y.Y., Pushkarev, A.B., Savolainen, T., Agudo, I., Molina, S.N., Gomez, J.L., Larionov, V.M., Borman, G.A., Mokrushina, A.A., Tornikoski, M., Lahteenmaki, A., Chamani, W., Enestam, S., Kiehlmann, S., Hovatta, T., Smith, P.S., Pontrelli, P.
بيانات النشر: IOP Publishing LTD
سنة النشر: 2018
المجموعة: Boston University: OpenBU
مصطلحات موضوعية: Science & technology, Physical sciences, Astronomy & astrophysics, BL Lacertae objects: individual (BL Lacertae = VER J2202+422), Galaxies: active, Active galactic nuclei, Black-hole mass, Polarimetric observations, Radio polarization, High-frequencies, Lac objects, Jets, Variability, Emission, Energy, Astronomical and space sciences, Organic chemistry, Physical chemistry (incl. structural)
الوصف: Combined with measurements made by very-long-baseline interferometry, the observations of fast TeV gamma-ray flares probe the structure and emission mechanism of blazar jets. However, only a handful of such flares have been detected to date, and only within the last few years have these flares been observed from lower-frequency-peaked BL Lac objects and flat-spectrum radio quasars. We report on a fast TeV gamma-ray flare from the blazar BL Lacertae observed by the Very Energetic Radiation Imaging Telescope Array System (VERITAS). with a rise time of ~2.3 hr and a decay time of ~36 min. The peak flux above 200 GeV is (4.2 ± 0.6) × 10⁻⁶ photon m⁻² s⁻¹ measured with a 4-minute-binned light curve, corresponding to ~180% of the flux that is observed from the Crab Nebula above the same energy threshold. Variability contemporaneous with the TeV gamma-ray flare was observed in GeV gamma-ray, X-ray, and optical flux, as well as in optical and radio polarization. Additionally, a possible moving emission feature with superluminal apparent velocity was identified in Very Long Baseline Array observations at 43 GHz, potentially passing the radio core of the jet around the time of the gamma-ray flare. We discuss the constraints on the size, Lorentz factor, and location of the emitting region of the flare, and the interpretations with several theoretical models that invoke relativistic plasma passing stationary shocks. ; VERITAS is supported by grants from the U.S. Department of Energy Office of Science, the U.S. National Science Foundation and the Smithsonian Institution, and by NSERC in Canada. We acknowledge the excellent work of the technical support staff at the Fred Lawrence Whipple Observatory and at the collaborating institutions in the construction and operation of the instrument.The research at Boston University was supported in part by NASA Fermi Guest Investigator Program grant 80NSSC17K 0694. The VLBA is an instrument of the Long Baseline Observatory (LBO). The LBO is a facility of the National Science Foundation ...
نوع الوثيقة: article in journal/newspaper
وصف الملف: 14 p.
اللغة: English
تدمد: 0004-637X
1538-4357
العلاقة: Astrophysical Journal; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000428685000008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=6e74115fe3da270499c3d65c9b17d654Test; AU Abeysekara, W Benbow, R Bird, T Brantseg, R Brose, M Buchovecky, JH Buckley, V Bugaev, MP Connolly, W Cui, MK Daniel, A Falcone, Q Feng, JP Finley, L Fortson, A Furniss, GH Gillanders, I Gunawardhana, M Huetten, D Hanna, O Hervet, J Holder, G Hughes, TB Humensky, CA Johnson, P Kaaret, P Kar, M Kertzman, F Krennrich, MJ Lang, TTY Lin, S McArthur, P Moriarty, R Mukherjee, S O'Brien, RA Ong, AN Otte, N Park, A Petrashyk, M Pohl, E Pueschel, J Quinn, K Ragan, PT Reynolds, GT Richards, E Roache, C Rulten, I Sadeh, M Santander, GH Sembroski, K Shahinyan, SP Wakely, A Weinstein, RM Wells, P Wilcox, DA Williams, B Zitzer, SG Jorstad, AP Marscher, ML Lister, YY Kovalev, AB Pushkarev, T Savolainen, I Agudo, SN Molina, JL Gomez, VM Larionov, GA Borman, AA Mokrushina, M Tornikoski, A Lahteenmaki, W Chamani, S Enestam, S Kiehlmann, T Hovatta, PS Smith, P Pontrelli. 2018. "Multiwavelength Observations of the Blazar BL Lacertae: A New Fast TeV Gamma-Ray Flare." ASTROPHYSICAL JOURNAL, Volume 856, Issue 2, pp. ? - ? (14). https://doi.org/10.3847/1538-4357/aab35cTest; https://hdl.handle.net/2144/33337Test; 0000-0001-7396-3332 (Marscher, AP)
DOI: 10.3847/1538-4357/aab35c
الإتاحة: https://doi.org/10.3847/1538-4357/aab35cTest
https://hdl.handle.net/2144/33337Test
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000428685000008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=6e74115fe3da270499c3d65c9b17d654Test
حقوق: © 2018. The American Astronomical Society. All rights reserved.
رقم الانضمام: edsbas.9337460B
قاعدة البيانات: BASE
الوصف
تدمد:0004637X
15384357
DOI:10.3847/1538-4357/aab35c