Multiwavelength observations of the very high energy blazar 1ES 2344+514
Multiwavelength observations of the high-frequency-peaked blazar 1ES2344+514 were performed from 2007 October to 2008 January. The campaign represents the first contemporaneous data on the object at very high energy (VHE, E >100GeV) γ-ray, X-ray, and UV energies. Observations with VERITAS in...
Guardado en:
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Formato: | JOUR |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_0004637X_v738_n2_p_Acciari |
| Aporte de: |
| id |
todo:paper_0004637X_v738_n2_p_Acciari |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_0004637X_v738_n2_p_Acciari2023-10-03T14:02:16Z Multiwavelength observations of the very high energy blazar 1ES 2344+514 Acciari, V.A. Aliu, E. Arlen, T. Aune, T. Beilicke, M. Benbow, W. Boltuch, D. Bugaev, V. Cannon, A. Ciupik, L. Cogan, P. Colin, P. Dickherber, R. Falcone, A. Fegan, S.J. Finley, J.P. Fortin, P. Fortson, L.F. Furniss, A. Gall, D. Gillanders, G.H. Grube, J. Guenette, R. Gyuk, G. Hanna, D. Holder, J. Horan, D. Hui, C.M. Humensky, T.B. Imran, A. Kaaret, P. Karlsson, N. Kertzman, M. Kieda, D. Kildea, J. Konopelko, A. Krawczynski, H. Krennrich, F. Lang, M.J. Lebohec, S. Maier, G. Moriarty, P. Mukherjee, R. Ong, R.A. Otte, A.N. Pandel, D. Perkins, J.S. Pichel, A. Pohl, M. Quinn, J. Ragan, K. Reynolds, P.T. Rose, H.J. Schroedter, M. Sembroski, G.H. Smith, A.W. Steele, D. Swordy, S.P. Theiling, M. Toner, J.A. Varlotta, A. Vassiliev, V.V. Vincent, S. Wagner, R. Wakely, S.P. Ward, J.E. Weekes, T.C. Weinstein, A. Weisgarber, T. Williams, D.A. Wissel, S. Wood, M. Zitzer, B. Multiwavelength observations of the high-frequency-peaked blazar 1ES2344+514 were performed from 2007 October to 2008 January. The campaign represents the first contemporaneous data on the object at very high energy (VHE, E >100GeV) γ-ray, X-ray, and UV energies. Observations with VERITAS in VHE γ-rays yield a strong detection of 20σ with 633 excess events in a total exposure of 18.1 hr live time. A strong VHE γ-ray flare on 2007 December 7 is measured at F(>300GeV) = (6.76 0.62) × 10 -11 photonscm -2 s -1 , corresponding to 48% of the Crab Nebula flux. Excluding this flaring episode, nightly variability at lower fluxes is observed with a time-averaged mean of F(>300GeV) = (1.06 0.09) × 10 -11 photonscm -2 s -1 (7.6% of the Crab Nebula flux). The differential photon spectrum between 390GeV and 8.3TeV for the time-averaged observations excluding 2007 December 7 is well described by a power law with a photon index of Γ = 2.78 0.09 stat 0.15 syst . On the flaring night of 2007 December 7 the measured VHE γ-ray photon index was Γ = 2.43 0.22 stat 0.15 syst . Over the full period of VERITAS observations contemporaneous X-ray and UV data were taken with Swift and RXTE. The measured 2-10keV flux ranged by a factor of 7 during the campaign. On 2007 December 8 the highest ever observed X-ray flux from 1ES2344+514 was measured by Swift X-ray Telescope at a flux of F(2-10keV) = (6.28 0.31) × 10 -11 ergcm -2 s -1 . Evidence for a correlation between the X-ray flux and VHE γ-ray flux on nightly timescales is indicated with a Pearson correlation coefficient of r = 0.60 0.11. Contemporaneous spectral energy distributions (SEDs) of 1ES2344+514 are presented for two distinct flux states. A one-zone synchrotron self-Compton (SSC) model describes both SEDs using parameters consistent with previous SSC modeling of 1ES2344+514 from non-contemporaneous observations. © 2011. The American Astronomical Society. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0004637X_v738_n2_p_Acciari |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
Multiwavelength observations of the high-frequency-peaked blazar 1ES2344+514 were performed from 2007 October to 2008 January. The campaign represents the first contemporaneous data on the object at very high energy (VHE, E >100GeV) γ-ray, X-ray, and UV energies. Observations with VERITAS in VHE γ-rays yield a strong detection of 20σ with 633 excess events in a total exposure of 18.1 hr live time. A strong VHE γ-ray flare on 2007 December 7 is measured at F(>300GeV) = (6.76 0.62) × 10 -11 photonscm -2 s -1 , corresponding to 48% of the Crab Nebula flux. Excluding this flaring episode, nightly variability at lower fluxes is observed with a time-averaged mean of F(>300GeV) = (1.06 0.09) × 10 -11 photonscm -2 s -1 (7.6% of the Crab Nebula flux). The differential photon spectrum between 390GeV and 8.3TeV for the time-averaged observations excluding 2007 December 7 is well described by a power law with a photon index of Γ = 2.78 0.09 stat 0.15 syst . On the flaring night of 2007 December 7 the measured VHE γ-ray photon index was Γ = 2.43 0.22 stat 0.15 syst . Over the full period of VERITAS observations contemporaneous X-ray and UV data were taken with Swift and RXTE. The measured 2-10keV flux ranged by a factor of 7 during the campaign. On 2007 December 8 the highest ever observed X-ray flux from 1ES2344+514 was measured by Swift X-ray Telescope at a flux of F(2-10keV) = (6.28 0.31) × 10 -11 ergcm -2 s -1 . Evidence for a correlation between the X-ray flux and VHE γ-ray flux on nightly timescales is indicated with a Pearson correlation coefficient of r = 0.60 0.11. Contemporaneous spectral energy distributions (SEDs) of 1ES2344+514 are presented for two distinct flux states. A one-zone synchrotron self-Compton (SSC) model describes both SEDs using parameters consistent with previous SSC modeling of 1ES2344+514 from non-contemporaneous observations. © 2011. The American Astronomical Society. All rights reserved. |
| format |
JOUR |
| author |
Acciari, V.A. Aliu, E. Arlen, T. Aune, T. Beilicke, M. Benbow, W. Boltuch, D. Bugaev, V. Cannon, A. Ciupik, L. Cogan, P. Colin, P. Dickherber, R. Falcone, A. Fegan, S.J. Finley, J.P. Fortin, P. Fortson, L.F. Furniss, A. Gall, D. Gillanders, G.H. Grube, J. Guenette, R. Gyuk, G. Hanna, D. Holder, J. Horan, D. Hui, C.M. Humensky, T.B. Imran, A. Kaaret, P. Karlsson, N. Kertzman, M. Kieda, D. Kildea, J. Konopelko, A. Krawczynski, H. Krennrich, F. Lang, M.J. Lebohec, S. Maier, G. Moriarty, P. Mukherjee, R. Ong, R.A. Otte, A.N. Pandel, D. Perkins, J.S. Pichel, A. Pohl, M. Quinn, J. Ragan, K. Reynolds, P.T. Rose, H.J. Schroedter, M. Sembroski, G.H. Smith, A.W. Steele, D. Swordy, S.P. Theiling, M. Toner, J.A. Varlotta, A. Vassiliev, V.V. Vincent, S. Wagner, R. Wakely, S.P. Ward, J.E. Weekes, T.C. Weinstein, A. Weisgarber, T. Williams, D.A. Wissel, S. Wood, M. Zitzer, B. |
| spellingShingle |
Acciari, V.A. Aliu, E. Arlen, T. Aune, T. Beilicke, M. Benbow, W. Boltuch, D. Bugaev, V. Cannon, A. Ciupik, L. Cogan, P. Colin, P. Dickherber, R. Falcone, A. Fegan, S.J. Finley, J.P. Fortin, P. Fortson, L.F. Furniss, A. Gall, D. Gillanders, G.H. Grube, J. Guenette, R. Gyuk, G. Hanna, D. Holder, J. Horan, D. Hui, C.M. Humensky, T.B. Imran, A. Kaaret, P. Karlsson, N. Kertzman, M. Kieda, D. Kildea, J. Konopelko, A. Krawczynski, H. Krennrich, F. Lang, M.J. Lebohec, S. Maier, G. Moriarty, P. Mukherjee, R. Ong, R.A. Otte, A.N. Pandel, D. Perkins, J.S. Pichel, A. Pohl, M. Quinn, J. Ragan, K. Reynolds, P.T. Rose, H.J. Schroedter, M. Sembroski, G.H. Smith, A.W. Steele, D. Swordy, S.P. Theiling, M. Toner, J.A. Varlotta, A. Vassiliev, V.V. Vincent, S. Wagner, R. Wakely, S.P. Ward, J.E. Weekes, T.C. Weinstein, A. Weisgarber, T. Williams, D.A. Wissel, S. Wood, M. Zitzer, B. Multiwavelength observations of the very high energy blazar 1ES 2344+514 |
| author_facet |
Acciari, V.A. Aliu, E. Arlen, T. Aune, T. Beilicke, M. Benbow, W. Boltuch, D. Bugaev, V. Cannon, A. Ciupik, L. Cogan, P. Colin, P. Dickherber, R. Falcone, A. Fegan, S.J. Finley, J.P. Fortin, P. Fortson, L.F. Furniss, A. Gall, D. Gillanders, G.H. Grube, J. Guenette, R. Gyuk, G. Hanna, D. Holder, J. Horan, D. Hui, C.M. Humensky, T.B. Imran, A. Kaaret, P. Karlsson, N. Kertzman, M. Kieda, D. Kildea, J. Konopelko, A. Krawczynski, H. Krennrich, F. Lang, M.J. Lebohec, S. Maier, G. Moriarty, P. Mukherjee, R. Ong, R.A. Otte, A.N. Pandel, D. Perkins, J.S. Pichel, A. Pohl, M. Quinn, J. Ragan, K. Reynolds, P.T. Rose, H.J. Schroedter, M. Sembroski, G.H. Smith, A.W. Steele, D. Swordy, S.P. Theiling, M. Toner, J.A. Varlotta, A. Vassiliev, V.V. Vincent, S. Wagner, R. Wakely, S.P. Ward, J.E. Weekes, T.C. Weinstein, A. Weisgarber, T. Williams, D.A. Wissel, S. Wood, M. Zitzer, B. |
| author_sort |
Acciari, V.A. |
| title |
Multiwavelength observations of the very high energy blazar 1ES 2344+514 |
| title_short |
Multiwavelength observations of the very high energy blazar 1ES 2344+514 |
| title_full |
Multiwavelength observations of the very high energy blazar 1ES 2344+514 |
| title_fullStr |
Multiwavelength observations of the very high energy blazar 1ES 2344+514 |
| title_full_unstemmed |
Multiwavelength observations of the very high energy blazar 1ES 2344+514 |
| title_sort |
multiwavelength observations of the very high energy blazar 1es 2344+514 |
| url |
http://hdl.handle.net/20.500.12110/paper_0004637X_v738_n2_p_Acciari |
| work_keys_str_mv |
AT acciariva multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT aliue multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT arlent multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT aunet multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT beilickem multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT benboww multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT boltuchd multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT bugaevv multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT cannona multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT ciupikl multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT coganp multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT colinp multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT dickherberr multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT falconea multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT fegansj multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT finleyjp multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT fortinp multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT fortsonlf multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT furnissa multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT galld multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT gillandersgh multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT grubej multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT guenetter multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT gyukg multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT hannad multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT holderj multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT horand multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT huicm multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT humenskytb multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT imrana multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT kaaretp multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT karlssonn multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT kertzmanm multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT kiedad multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT kildeaj multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT konopelkoa multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT krawczynskih multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT krennrichf multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT langmj multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT lebohecs multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT maierg multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT moriartyp multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT mukherjeer multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT ongra multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT ottean multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT pandeld multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT perkinsjs multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT pichela multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT pohlm multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT quinnj multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT ragank multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT reynoldspt multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT rosehj multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT schroedterm multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT sembroskigh multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT smithaw multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT steeled multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT swordysp multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT theilingm multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT tonerja multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT varlottaa multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT vassilievvv multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT vincents multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT wagnerr multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT wakelysp multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT wardje multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT weekestc multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT weinsteina multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT weisgarbert multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT williamsda multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT wissels multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT woodm multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 AT zitzerb multiwavelengthobservationsoftheveryhighenergyblazar1es2344514 |
| _version_ |
1807317614154743808 |