Fermi-LAT observations of the 2014 May-July outburst from 3C 454.3
Abstract
We observed a prominent outburst of the flat spectrum radio quasar 3C 454.3 in 2014 June with the Fermi Large Area Telescope. This outburst was characterized by a three-stage light-curve pattern—plateau, flare, and post-flare—that occurred from 2014 May to July, in a similar pattern as observed during the exceptional outburst in 2010 November. The highest flux of the outburst reported in this paper occurred during 2014 June 7–29, showing a multiple-peak structure in the light-curves. The average flux in these 22 days was found to be $$F[E\gt 100\,\mathrm{MeV}]=(7.2\pm 0.2)\times {10}^{-6}$$ ph cm-2 s-1, with a spectral index, for a simple power law, of $${\rm{\Gamma }}=2.04\pm 0.01$$. That made this outburst the first γ-ray high state of 3C 454.3 ever to be detected by Fermi with such a hard spectrum over several days. The highest flux was recorded on 2014 June 15, in a 3 hr bin, at MJD 56823.5625, at a level of $$F[E\gt 100\,\mathrm{MeV}]=(17.6\pm 1.9)\times {10}^{-6}$$ ph cm-2 s-1. Furthermore, the rise time of one of the short subflares was found to be $${T}_{r}=1200\pm 700$$ s at MJD = 56827, when the flux increased from 4 to 12 × 10-6 ph cm-2 s-1. Finally, we collected several photons above 20 GeV during this outburst, including one at 45 GeV on MJD 56827, constraining the γ-ray emission region to be located close to the outer boundary of the broad-line region, leading to fast flux variability.
- Authors:
-
- Univ. of Johannesburg (South Africa). Dept. of Physics
- Stanford Univ., CA (United States). W.W. Hansen Experimental Physics Lab.
- Univ. of Bordeaux (France). Centre of Nuclear Studies of Bordeaux-Gradignan
- National Inst. of Nuclear Physics, Padova (Italy); Univ. of Padov (Italy). Dept. of Physics
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1355710
- Grant/Contract Number:
- AC02-76SF00515
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astrophysical Journal (Online)
- Additional Journal Information:
- Journal Name: The Astrophysical Journal (Online); Journal Volume: 830; Journal Issue: 2; Journal ID: ISSN 1538-4357
- Publisher:
- Institute of Physics (IOP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; galaxies: active; gamma rays: galaxies; quasars: individual (3C 454.3)
Citation Formats
Britto, Richard J., Bottacini, Eugenio, Lott, Benoît, Razzaque, Soebur, and Buson, Sara. Fermi-LAT observations of the 2014 May-July outburst from 3C 454.3. United States: N. p., 2016.
Web. doi:10.3847/0004-637X/830/2/162.
Britto, Richard J., Bottacini, Eugenio, Lott, Benoît, Razzaque, Soebur, & Buson, Sara. Fermi-LAT observations of the 2014 May-July outburst from 3C 454.3. United States. https://doi.org/10.3847/0004-637X/830/2/162
Britto, Richard J., Bottacini, Eugenio, Lott, Benoît, Razzaque, Soebur, and Buson, Sara. Wed .
"Fermi-LAT observations of the 2014 May-July outburst from 3C 454.3". United States. https://doi.org/10.3847/0004-637X/830/2/162. https://www.osti.gov/servlets/purl/1355710.
@article{osti_1355710,
title = {Fermi-LAT observations of the 2014 May-July outburst from 3C 454.3},
author = {Britto, Richard J. and Bottacini, Eugenio and Lott, Benoît and Razzaque, Soebur and Buson, Sara},
abstractNote = {We observed a prominent outburst of the flat spectrum radio quasar 3C 454.3 in 2014 June with the Fermi Large Area Telescope. This outburst was characterized by a three-stage light-curve pattern—plateau, flare, and post-flare—that occurred from 2014 May to July, in a similar pattern as observed during the exceptional outburst in 2010 November. The highest flux of the outburst reported in this paper occurred during 2014 June 7–29, showing a multiple-peak structure in the light-curves. The average flux in these 22 days was found to be $F[E\gt 100\,\mathrm{MeV}]=(7.2\pm 0.2)\times {10}^{-6}$ ph cm-2 s-1, with a spectral index, for a simple power law, of ${\rm{\Gamma }}=2.04\pm 0.01$. That made this outburst the first γ-ray high state of 3C 454.3 ever to be detected by Fermi with such a hard spectrum over several days. The highest flux was recorded on 2014 June 15, in a 3 hr bin, at MJD 56823.5625, at a level of $F[E\gt 100\,\mathrm{MeV}]=(17.6\pm 1.9)\times {10}^{-6}$ ph cm-2 s-1. Furthermore, the rise time of one of the short subflares was found to be ${T}_{r}=1200\pm 700$ s at MJD = 56827, when the flux increased from 4 to 12 × 10-6 ph cm-2 s-1. Finally, we collected several photons above 20 GeV during this outburst, including one at 45 GeV on MJD 56827, constraining the γ-ray emission region to be located close to the outer boundary of the broad-line region, leading to fast flux variability.},
doi = {10.3847/0004-637X/830/2/162},
journal = {The Astrophysical Journal (Online)},
number = 2,
volume = 830,
place = {United States},
year = {Wed Oct 19 00:00:00 EDT 2016},
month = {Wed Oct 19 00:00:00 EDT 2016}
}
Web of Science
Works referenced in this record:
THE SPECTRAL ENERGY DISTRIBUTION OF FERMI BRIGHT BLAZARS
journal, May 2010
- Abdo, A. A.; Ackermann, M.; Agudo, I.
- The Astrophysical Journal, Vol. 716, Issue 1
Early Fermi Gamma-Ray Space Telescope Observations of the Quasar 3c 454.3
journal, June 2009
- Abdo, A. A.; Ackermann, M.; Ajello, M.
- The Astrophysical Journal, Vol. 699, Issue 1
SPECTRAL PROPERTIES OF BRIGHT FERMI -DETECTED BLAZARS IN THE GAMMA-RAY BAND
journal, January 2010
- Abdo, A. A.; Ackermann, M.; Ajello, M.
- The Astrophysical Journal, Vol. 710, Issue 2
FERMI GAMMA-RAY SPACE TELESCOPE OBSERVATIONS OF THE GAMMA-RAY OUTBURST FROM 3C454.3 IN NOVEMBER 2010
journal, May 2011
- Abdo, A. A.; Ackermann, M.; Ajello, M.
- The Astrophysical Journal, Vol. 733, Issue 2
FERMI LARGE AREA TELESCOPE THIRD SOURCE CATALOG
journal, June 2015
- Acero, F.; Ackermann, M.; Ajello, M.
- The Astrophysical Journal Supplement Series, Vol. 218, Issue 2
DEVELOPMENT OF THE MODEL OF GALACTIC INTERSTELLAR EMISSION FOR STANDARD POINT-SOURCE ANALYSIS OF FERMI LARGE AREA TELESCOPE DATA
journal, April 2016
- Acero, F.; Ackermann, M.; Ajello, M.
- The Astrophysical Journal Supplement Series, Vol. 223, Issue 2
THE FERMI LARGE AREA TELESCOPE ON ORBIT: EVENT CLASSIFICATION, INSTRUMENT RESPONSE FUNCTIONS, AND CALIBRATION
journal, October 2012
- Ackermann, M.; Ajello, M.; Albert, A.
- The Astrophysical Journal Supplement Series, Vol. 203, Issue 1
SEARCH FOR GAMMA-RAY EMISSION FROM THE COMA CLUSTER WITH SIX YEARS OF FERMI -LAT DATA
journal, March 2016
- Ackermann, M.; Ajello, M.; Albert, A.
- The Astrophysical Journal, Vol. 819, Issue 2
FERMI GAMMA-RAY SPACE TELESCOPE OBSERVATIONS OF GAMMA-RAY OUTBURSTS FROM 3C 454.3 IN 2009 DECEMBER AND 2010 APRIL
journal, September 2010
- Ackermann, M.; Ajello, M.; Baldini, L.
- The Astrophysical Journal, Vol. 721, Issue 2
THE LARGE AREA TELESCOPE ON THE FERMI GAMMA-RAY SPACE TELESCOPE MISSION
journal, May 2009
- Atwood, W. B.; Abdo, A. A.; Ackermann, M.
- The Astrophysical Journal, Vol. 697, Issue 2
The γ-ray brightest days of the blazar 3C 454.3: The γ-ray brightest of 3C 454.3
journal, September 2010
- Bonnoli, G.; Ghisellini, G.; Foschini, L.
- Monthly Notices of the Royal Astronomical Society, Vol. 410, Issue 1
The Polarization Dependence of γγ Absorption—Implications for γ-Ray Bursts and Blazars
journal, October 2014
- Böttcher, M.
- The Astrophysical Journal, Vol. 795, Issue 1
LEPTONIC AND HADRONIC MODELING OF FERMI -DETECTED BLAZARS
journal, April 2013
- Böttcher, M.; Reimer, A.; Sweeney, K.
- The Astrophysical Journal, Vol. 768, Issue 1
GAMMA-RAY BLAZARS NEAR EQUIPARTITION AND THE ORIGIN OF THE GeV SPECTRAL BREAK IN 3C 454.3
journal, June 2013
- Cerruti, Matteo; Dermer, Charles D.; Lott, Benoît
- The Astrophysical Journal, Vol. 771, Issue 1
Localizing the γ-ray emission region during the 2014 June outburst of 3C 454.3
journal, March 2016
- Coogan, Rosemary T.; Brown, Anthony M.; Chadwick, Paula M.
- Monthly Notices of the Royal Astronomical Society, Vol. 458, Issue 1
A METHOD FOR LOCALIZING ENERGY DISSIPATION IN BLAZARS USING FERMI VARIABILITY
journal, September 2012
- Dotson, Amanda; Georganopoulos, Markos; Kazanas, Demosthenes
- The Astrophysical Journal, Vol. 758, Issue 1
ON THE BREAK IN THE FERMI -LARGE AREA TELESCOPE SPECTRUM OF 3C 454.3
journal, April 2010
- Finke, Justin D.; Dermer, Charles D.
- The Astrophysical Journal, Vol. 714, Issue 2
Synchrotron Self‐Compton Analysis of TeV X‐Ray‐Selected BL Lacertae Objects
journal, October 2008
- Finke, Justin D.; Dermer, Charles D.; Böttcher, Markus
- The Astrophysical Journal, Vol. 686, Issue 1
Modeling the Extragalactic Background Light from Stars and dust
journal, February 2010
- Finke, Justin D.; Razzaque, Soebur; Dermer, Charles D.
- The Astrophysical Journal, Vol. 712, Issue 1
Detection of significant cm to sub-mm band radio and -ray correlated variability in Fermi bright blazars
journal, May 2014
- Fuhrmann, L.; Larsson, S.; Chiang, J.
- Monthly Notices of the Royal Astronomical Society, Vol. 441, Issue 3
Opacity of the Universe to High-Energy Photons
journal, March 1967
- Gould, Robert J.; Schréder, Gérard P.
- Physical Review, Vol. 155, Issue 5
The Third EGRET Catalog of High‐Energy Gamma‐Ray Sources
journal, July 1999
- Hartman, R. C.; Bertsch, D. L.; Bloom, S. D.
- The Astrophysical Journal Supplement Series, Vol. 123, Issue 1
Shaping the GeV-spectra of bright blazars
journal, April 2016
- Hunger, L.; Reimer, A.
- Astronomy & Astrophysics, Vol. 589
Flaring Behavior of the Quasar 3c 454.3 Across the Electromagnetic Spectrum
journal, April 2010
- Jorstad, Svetlana G.; Marscher, Alan P.; Larionov, Valeri M.
- The Astrophysical Journal, Vol. 715, Issue 1
Polarimetric Observations of 15 Active Galactic Nuclei at High Frequencies: Jet Kinematics from Bimonthly Monitoring with the Very Long Baseline Array
journal, October 2005
- Jorstad, Svetlana G.; Marscher, Alan P.; Lister, Matthew L.
- The Astronomical Journal, Vol. 130, Issue 4
A Tight Connection Between Gamma-Ray Outbursts and Parsec-Scale jet Activity in the Quasar 3c 454.3
journal, August 2013
- Jorstad, Svetlana G.; Marscher, Alan P.; Smith, Paul S.
- The Astrophysical Journal, Vol. 773, Issue 2
The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with
improved stray-radiation corrections
journal, September 2005
- Kalberla, P. M. W.; Burton, W. B.; Hartmann, Dap
- Astronomy & Astrophysics, Vol. 440, Issue 2
Turbulent spectra of the brightest gamma-ray flares of blazars
journal, April 2015
- Kohler, Susanna; Nalewajko, Krzysztof
- Monthly Notices of the Royal Astronomical Society, Vol. 449, Issue 3
FLARE-LIKE VARIABILITY OF THE Mg II λ2800 EMISSION LINE IN THE γ-RAY BLAZAR 3C 454.3
journal, January 2013
- León-Tavares, J.; Chavushyan, V.; Patiño-Álvarez, V.
- The Astrophysical Journal, Vol. 763, Issue 2
An adaptive-binning method for generating constant-uncertainty/constant-significance light curves with Fermi -LAT data
journal, July 2012
- Lott, B.; Escande, L.; Larsson, S.
- Astronomy & Astrophysics, Vol. 544
New Spectroscopic Observations of Twenty Quasi-Stellar Sources
journal, February 1967
- Lynds, C. R.
- The Astrophysical Journal, Vol. 147
Hints of an axion-like particle mixing in the GeV gamma-ray blazar data?
journal, November 2013
- Mena, Olga; Razzaque, Soebur
- Journal of Cosmology and Astroparticle Physics, Vol. 2013, Issue 11
SWIFT XRT point spread function measured at the Panter end-to-end tests
conference, February 2004
- Moretti, Alberto; Campana, Sergio; Tagliaferri, Gianpiero
- Optical Science and Technology, SPIE's 48th Annual Meeting, SPIE Proceedings
Constraining the Location of Gamma-Ray Flares in Luminous Blazars
journal, June 2014
- Nalewajko, Krzysztof; Begelman, Mitchell C.; Sikora, Marek
- The Astrophysical Journal, Vol. 789, Issue 2
FERMI LARGE AREA TELESCOPE SECOND SOURCE CATALOG
journal, March 2012
- Nolan, P. L.; Abdo, A. A.; Ackermann, M.
- The Astrophysical Journal Supplement Series, Vol. 199, Issue 2
Radio and γ-ray follow-up of the exceptionally high-activity state of PKS 1510−089 in 2011
journal, November 2012
- Orienti, M.; Koyama, S.; D'Ammando, F.
- Monthly Notices of the Royal Astronomical Society, Vol. 428, Issue 3
EXPLORING THE BLAZAR ZONE IN HIGH-ENERGY FLARES OF FSRQs
journal, July 2014
- Pacciani, L.; Tavecchio, F.; Donnarumma, I.
- The Astrophysical Journal, Vol. 790, Issue 1
The 2009 December Gamma-Ray Flare of 3c 454.3: the Multifrequency Campaign
journal, June 2010
- Pacciani, L.; Vittorini, V.; Tavani, M.
- The Astrophysical Journal, Vol. 716, Issue 2
Planck 2013 results. XVI. Cosmological parameters
journal, October 2014
- Ade, P. A. R.; Aghanim, N.; Armitage-Caplan, C.
- Astronomy & Astrophysics, Vol. 571
GeV BREAKS IN BLAZARS AS A RESULT OF GAMMA-RAY ABSORPTION WITHIN THE BROAD-LINE REGION
journal, June 2010
- Poutanen, Juri; Stern, Boris
- The Astrophysical Journal, Vol. 717, Issue 2
The Stellar Contribution to the Extragalactic Background Light and Absorption of High-Energy Gamma rays
journal, May 2009
- Razzaque, Soebur; Dermer, Charles D.; Finke, Justin D.
- The Astrophysical Journal, Vol. 697, Issue 1
The relation between broad lines and γ -ray luminosities in Fermi blazars
journal, February 2012
- Sbarrato, T.; Ghisellini, G.; Maraschi, L.
- Monthly Notices of the Royal Astronomical Society, Vol. 421, Issue 2
3C 454.3 Reveals the Structure and Physics of Its “Blazar Zone”
journal, March 2008
- Sikora, Marek; Moderski, RafaŁ; Madejski, Greg M.
- The Astrophysical Journal, Vol. 675, Issue 1
Variation of the γγ opacity by the He ii Lyman continuum constrains the location of the γ-ray emission region in the blazar 3C 454.3: γ-ray emission of 3C 454.3
journal, August 2011
- Stern, Boris E.; Poutanen, Juri
- Monthly Notices of the Royal Astronomical Society: Letters, Vol. 417, Issue 1
THE MYSTERY OF SPECTRAL BREAKS: LYMAN CONTINUUM ABSORPTION BY PHOTON-PHOTON PAIR PRODUCTION IN THE FERMI GeV SPECTRA OF BRIGHT BLAZARS
journal, September 2014
- Stern, Boris E.; Poutanen, Juri
- The Astrophysical Journal, Vol. 794, Issue 1
The Extraordinary Gamma-Ray Flare of the Blazar 3c 454.3
journal, June 2010
- Striani, E.; Vercellone, S.; Tavani, M.
- The Astrophysical Journal, Vol. 718, Issue 1
MULTIWAVELENGTH OBSERVATIONS OF 3C 454.3. I. THE AGILE 2007 NOVEMBER CAMPAIGN ON THE “ CRAZY DIAMOND ”
journal, December 2008
- Vercellone, S.; Chen, A. W.; Vittorini, V.
- The Astrophysical Journal, Vol. 690, Issue 1
MULTIWAVELENGTH OBSERVATIONS OF 3C 454.3. III. EIGHTEEN MONTHS OF AGILE MONITORING OF THE “ CRAZY DIAMOND ”
journal, March 2010
- Vercellone, S.; D'Ammando, F.; Vittorini, V.
- The Astrophysical Journal, Vol. 712, Issue 1
Works referencing / citing this record:
Identification of activity peaks in time-tagged data with a scan-statistics driven clustering method and its application to gamma-ray data samples
journal, July 2018
- Pacciani, Luigi
- Astronomy & Astrophysics, Vol. 615
Radiative signatures of plasmoid-dominated reconnection in blazar jets
journal, October 2018
- Christie, I. M.; Petropoulou, M.; Sironi, L.
- Monthly Notices of the Royal Astronomical Society, Vol. 482, Issue 1
On the origin of gamma-rays in Fermi blazars: beyondthe broad-line region
journal, May 2018
- Costamante, L.; Cutini, S.; Tosti, G.
- Monthly Notices of the Royal Astronomical Society, Vol. 477, Issue 4
Fermi -Large Area Telescope Observations of the Brightest Gamma-Ray Flare Ever Detected from CTA 102
journal, October 2018
- Prince, Raj; Raman, Gayathri; Hahn, Joachim
- The Astrophysical Journal, Vol. 866, Issue 1
Temporal Variability and Estimation of Jet Parameters for Ton 599
journal, October 2018
- Patel, S. R.; Chitnis, V. R.; Shukla, A.
- The Astrophysical Journal, Vol. 866, Issue 2
The 2016 June Optical and Gamma-Ray Outburst and Optical Microvariability of the Blazar 3C 454.3
journal, April 2019
- Weaver, Zachary R.; Balonek, Thomas J.; Jorstad, Svetlana G.
- The Astrophysical Journal, Vol. 875, Issue 1
Identification of activity peaks in time-tagged data with a scan-statistics driven clustering method and its application to gamma-ray data samples
text, January 2018
- Pacciani, Luigi
- arXiv
On the origin of gamma rays in Fermi blazars: beyond the broad line region
text, January 2018
- Costamante, L.; Cutini, S.; Tosti, G.
- arXiv
Fermi-Large Area Telescope observations of the brightest Gamma-ray flare ever detected from CTA 102
text, January 2018
- Prince, Raj; Raman, Gayathri; Hahn, Joachim
- arXiv
The June 2016 Optical and Gamma-Ray Outburst and Optical Micro-Variability of the Blazar 3C454.3
text, January 2019
- Weaver, Zachary R.; Balonek, Thomas J.; Jorstad, Svetlana G.
- arXiv