Discovery of high-energy and very high energy γ-ray emission from the blazar RBS 0413
Abstract
Here, we report on the discovery of high-energy (HE; E > 0.1 GeV) and very high energy (VHE; E > 100 GeV) γ-ray emission from the high-frequency-peaked BL Lac object RBS 0413. VERITAS, a ground-based γ-ray observatory, detected VHE γ rays from RBS 0413 with a statistical significance of 5.5 standard deviations (σ) and a γ-ray flux of (1.5 ± 0.6stat ± 0.7syst) × 10–8 photons m–2 s–1 (~1% of the Crab Nebula flux) above 250 GeV. The observed spectrum can be described by a power law with a photon index of 3.18 ± 0.68stat ± 0.30syst. Contemporaneous observations with the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope detected HE γ rays from RBS 0413 with a statistical significance of more than 9σ, a power-law photon index of 1.57 ± 0.12stat +0.11 – 0.12sys, and a γ-ray flux between 300 MeV and 300 GeV of (1.64 ± 0.43stat +0.31 – 0.22sys) × 10–5 photons m–2 s–1. We also present the results from Fermi-LAT and VERITAS, including a spectral energy distribution modeling of the γ-ray, quasi-simultaneous X-ray (Swift-XRT), ultraviolet (Swift-UVOT), and R-band optical (MDM) data. We finally find that, if conditions close to equipartition are required, both themore »
- Authors:
- more »
- Publication Date:
- Research Org.:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE
- Contributing Org.:
- Fermi LAT Collaboration
- OSTI Identifier:
- 1356733
- Grant/Contract Number:
- AC02-76SF00515
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astrophysical Journal
- Additional Journal Information:
- Journal Volume: 750; Journal Issue: 2; Journal ID: ISSN 0004-637X
- Publisher:
- Institute of Physics (IOP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; BL Lacertae objects: individual (RBS 0413-VER J0319+187); gamma rays: galaxies
Citation Formats
Aliu, E., Archambault, S., Arlen, T., Aune, T., Beilicke, M., Benbow, W., Böttcher, M., Bouvier, A., Bradbury, S. M., Buckley, J. H., Bugaev, V., Byrum, K., Cannon, A., Cesarini, A., Ciupik, L., Collins-Hughes, E., Connolly, M. P., Coppi, P., Cui, W., Decerprit, G., Dickherber, R., Dumm, J., Errando, M., Falcone, A., Feng, Q., Finley, J. P., Finnegan, G., Fortson, L., Furniss, A., Galante, N., Gall, D., Godambe, S., Griffin, S., Grube, J., Gyuk, G., Hanna, D., Hawkins, K., Holder, J., Huan, H., Hughes, G., Humensky, T. B., Kaaret, P., Karlsson, N., Kertzman, M., Khassen, Y., Kieda, D., Krawczynski, H., Krennrich, F., Lang, M. J., Lee, K., Madhavan, A. S., Maier, G., Majumdar, P., McArthur, S., McCann, A., Moriarty, P., Mukherjee, R., Ong, R. A., Orr, M., Otte, A. N., Palma, N., Park, N., Perkins, J. S., Pichel, A., Pohl, M., Prokoph, H., Quinn, J., Ragan, K., Reyes, L. C., Reynolds, P. T., Roache, E., Rose, H. J., Ruppel, J., Saxon, D. B., Schroedter, M., Sembroski, G. H., Şentürk, G. D., Smith, A. W., Staszak, D., Telezhinsky, I., Tešić, G., Theiling, M., Thibadeau, S., Tsurusaki, K., Varlotta, A., Vivier, M., Wakely, S. P., Ward, J. E., Weekes, T. C., Weinstein, A., Weisgarber, T., Williams, D. A., Zitzer, B., Fortin, P., and Horan, D. Discovery of high-energy and very high energy γ-ray emission from the blazar RBS 0413. United States: N. p., 2012.
Web. doi:10.1088/0004-637X/750/2/94.
Aliu, E., Archambault, S., Arlen, T., Aune, T., Beilicke, M., Benbow, W., Böttcher, M., Bouvier, A., Bradbury, S. M., Buckley, J. H., Bugaev, V., Byrum, K., Cannon, A., Cesarini, A., Ciupik, L., Collins-Hughes, E., Connolly, M. P., Coppi, P., Cui, W., Decerprit, G., Dickherber, R., Dumm, J., Errando, M., Falcone, A., Feng, Q., Finley, J. P., Finnegan, G., Fortson, L., Furniss, A., Galante, N., Gall, D., Godambe, S., Griffin, S., Grube, J., Gyuk, G., Hanna, D., Hawkins, K., Holder, J., Huan, H., Hughes, G., Humensky, T. B., Kaaret, P., Karlsson, N., Kertzman, M., Khassen, Y., Kieda, D., Krawczynski, H., Krennrich, F., Lang, M. J., Lee, K., Madhavan, A. S., Maier, G., Majumdar, P., McArthur, S., McCann, A., Moriarty, P., Mukherjee, R., Ong, R. A., Orr, M., Otte, A. N., Palma, N., Park, N., Perkins, J. S., Pichel, A., Pohl, M., Prokoph, H., Quinn, J., Ragan, K., Reyes, L. C., Reynolds, P. T., Roache, E., Rose, H. J., Ruppel, J., Saxon, D. B., Schroedter, M., Sembroski, G. H., Şentürk, G. D., Smith, A. W., Staszak, D., Telezhinsky, I., Tešić, G., Theiling, M., Thibadeau, S., Tsurusaki, K., Varlotta, A., Vivier, M., Wakely, S. P., Ward, J. E., Weekes, T. C., Weinstein, A., Weisgarber, T., Williams, D. A., Zitzer, B., Fortin, P., & Horan, D. Discovery of high-energy and very high energy γ-ray emission from the blazar RBS 0413. United States. https://doi.org/10.1088/0004-637X/750/2/94
Aliu, E., Archambault, S., Arlen, T., Aune, T., Beilicke, M., Benbow, W., Böttcher, M., Bouvier, A., Bradbury, S. M., Buckley, J. H., Bugaev, V., Byrum, K., Cannon, A., Cesarini, A., Ciupik, L., Collins-Hughes, E., Connolly, M. P., Coppi, P., Cui, W., Decerprit, G., Dickherber, R., Dumm, J., Errando, M., Falcone, A., Feng, Q., Finley, J. P., Finnegan, G., Fortson, L., Furniss, A., Galante, N., Gall, D., Godambe, S., Griffin, S., Grube, J., Gyuk, G., Hanna, D., Hawkins, K., Holder, J., Huan, H., Hughes, G., Humensky, T. B., Kaaret, P., Karlsson, N., Kertzman, M., Khassen, Y., Kieda, D., Krawczynski, H., Krennrich, F., Lang, M. J., Lee, K., Madhavan, A. S., Maier, G., Majumdar, P., McArthur, S., McCann, A., Moriarty, P., Mukherjee, R., Ong, R. A., Orr, M., Otte, A. N., Palma, N., Park, N., Perkins, J. S., Pichel, A., Pohl, M., Prokoph, H., Quinn, J., Ragan, K., Reyes, L. C., Reynolds, P. T., Roache, E., Rose, H. J., Ruppel, J., Saxon, D. B., Schroedter, M., Sembroski, G. H., Şentürk, G. D., Smith, A. W., Staszak, D., Telezhinsky, I., Tešić, G., Theiling, M., Thibadeau, S., Tsurusaki, K., Varlotta, A., Vivier, M., Wakely, S. P., Ward, J. E., Weekes, T. C., Weinstein, A., Weisgarber, T., Williams, D. A., Zitzer, B., Fortin, P., and Horan, D. Wed .
"Discovery of high-energy and very high energy γ-ray emission from the blazar RBS 0413". United States. https://doi.org/10.1088/0004-637X/750/2/94. https://www.osti.gov/servlets/purl/1356733.
@article{osti_1356733,
title = {Discovery of high-energy and very high energy γ-ray emission from the blazar RBS 0413},
author = {Aliu, E. and Archambault, S. and Arlen, T. and Aune, T. and Beilicke, M. and Benbow, W. and Böttcher, M. and Bouvier, A. and Bradbury, S. M. and Buckley, J. H. and Bugaev, V. and Byrum, K. and Cannon, A. and Cesarini, A. and Ciupik, L. and Collins-Hughes, E. and Connolly, M. P. and Coppi, P. and Cui, W. and Decerprit, G. and Dickherber, R. and Dumm, J. and Errando, M. and Falcone, A. and Feng, Q. and Finley, J. P. and Finnegan, G. and Fortson, L. and Furniss, A. and Galante, N. and Gall, D. and Godambe, S. and Griffin, S. and Grube, J. and Gyuk, G. and Hanna, D. and Hawkins, K. and Holder, J. and Huan, H. and Hughes, G. and Humensky, T. B. and Kaaret, P. and Karlsson, N. and Kertzman, M. and Khassen, Y. and Kieda, D. and Krawczynski, H. and Krennrich, F. and Lang, M. J. and Lee, K. and Madhavan, A. S. and Maier, G. and Majumdar, P. and McArthur, S. and McCann, A. and Moriarty, P. and Mukherjee, R. and Ong, R. A. and Orr, M. and Otte, A. N. and Palma, N. and Park, N. and Perkins, J. S. and Pichel, A. and Pohl, M. and Prokoph, H. and Quinn, J. and Ragan, K. and Reyes, L. C. and Reynolds, P. T. and Roache, E. and Rose, H. J. and Ruppel, J. and Saxon, D. B. and Schroedter, M. and Sembroski, G. H. and Şentürk, G. D. and Smith, A. W. and Staszak, D. and Telezhinsky, I. and Tešić, G. and Theiling, M. and Thibadeau, S. and Tsurusaki, K. and Varlotta, A. and Vivier, M. and Wakely, S. P. and Ward, J. E. and Weekes, T. C. and Weinstein, A. and Weisgarber, T. and Williams, D. A. and Zitzer, B. and Fortin, P. and Horan, D.},
abstractNote = {Here, we report on the discovery of high-energy (HE; E > 0.1 GeV) and very high energy (VHE; E > 100 GeV) γ-ray emission from the high-frequency-peaked BL Lac object RBS 0413. VERITAS, a ground-based γ-ray observatory, detected VHE γ rays from RBS 0413 with a statistical significance of 5.5 standard deviations (σ) and a γ-ray flux of (1.5 ± 0.6stat ± 0.7syst) × 10–8 photons m–2 s–1 (~1% of the Crab Nebula flux) above 250 GeV. The observed spectrum can be described by a power law with a photon index of 3.18 ± 0.68stat ± 0.30syst. Contemporaneous observations with the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope detected HE γ rays from RBS 0413 with a statistical significance of more than 9σ, a power-law photon index of 1.57 ± 0.12stat +0.11 – 0.12sys, and a γ-ray flux between 300 MeV and 300 GeV of (1.64 ± 0.43stat +0.31 – 0.22sys) × 10–5 photons m–2 s–1. We also present the results from Fermi-LAT and VERITAS, including a spectral energy distribution modeling of the γ-ray, quasi-simultaneous X-ray (Swift-XRT), ultraviolet (Swift-UVOT), and R-band optical (MDM) data. We finally find that, if conditions close to equipartition are required, both the combined synchrotron self-Compton/external-Compton and the lepto-hadronic models are preferred over a pure synchrotron self-Compton model.},
doi = {10.1088/0004-637X/750/2/94},
journal = {The Astrophysical Journal},
number = 2,
volume = 750,
place = {United States},
year = {Wed Apr 18 00:00:00 EDT 2012},
month = {Wed Apr 18 00:00:00 EDT 2012}
}
Web of Science
Works referenced in this record:
Unified Schemes for Radio-Loud Active Galactic Nuclei
journal, June 1995
- Urry, C. Megan; Padovani, Paolo
- Publications of the Astronomical Society of the Pacific, Vol. 107
Evidence for TeV gamma ray emission from Cassiopeia A
journal, April 2001
- Aharonian, F.; Akhperjanian, A.; Barrio, J.
- Astronomy & Astrophysics, Vol. 370, Issue 1
Optical and radio properties of X-ray selected BL Lacertae objects
journal, November 1985
- Stocke, J. T.; Liebert, J.; Schmidt, G.
- The Astrophysical Journal, Vol. 298
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
Model for the High-Energy Emission from Blazars
journal, October 1993
- Dermer, Charles D.; Schlickeiser, Reinhard
- The Astrophysical Journal, Vol. 416
The Swift X-Ray Telescope
journal, October 2005
- Burrows, David N.; Hill, J. E.; Nousek, J. A.
- Space Science Reviews, Vol. 120, Issue 3-4
The connection between x-ray- and radio-selected BL Lacertae objects
journal, May 1995
- Padovani, Paolo; Giommi, Paolo
- The Astrophysical Journal, Vol. 444
Maps of Dust Infrared Emission for Use in Estimation of Reddening and Cosmic Microwave Background Radiation Foregrounds
journal, June 1998
- Schlegel, David J.; Finkbeiner, Douglas P.; Davis, Marc
- The Astrophysical Journal, Vol. 500, Issue 2
Photometric calibration of the Swift ultraviolet/optical telescope: Photometric calibration of the Swift UVOT
journal, December 2007
- Poole, T. S.; Breeveld, A. A.; Page, M. J.
- Monthly Notices of the Royal Astronomical Society, Vol. 383, Issue 2
No evidence for radio-quiet BL Lacertae objects
journal, January 1990
- Stocke, John T.; Morris, Simon L.; Gioia, Isabella
- The Astrophysical Journal, Vol. 348
Spectral energy distributions of a large sample of BL Lacertae objects
journal, December 2005
- Nieppola, E.; Tornikoski, M.; Valtaoja, E.
- Astronomy & Astrophysics, Vol. 445, Issue 2
A jet model for the gamma-ray emitting blazar 3C 279
journal, September 1992
- Maraschi, L.; Ghisellini, G.; Celotti, A.
- The Astrophysical Journal, Vol. 397
A Possible Estimate of the Doppler Factors for Blazars
journal, December 2007
- Xiang, Yang; Dai, Ben-Zhong
- Publications of the Astronomical Society of Japan, Vol. 59, Issue 6
A new mirror alignment system for the VERITAS telescopes
journal, January 2010
- McCann, A.; Hanna, D.; Kildea, J.
- Astroparticle Physics, Vol. 32, Issue 6
On characterizing the variability properties of X-ray light curves from active galaxies
journal, November 2003
- Vaughan, S.; Edelson, R.; Warwick, R. S.
- Monthly Notices of the Royal Astronomical Society, Vol. 345, Issue 4
The Swift Gamma‐Ray Burst Mission
journal, August 2004
- Gehrels, N.; Chincarini, G.; Giommi, P.
- The Astrophysical Journal, Vol. 611, Issue 2
Systematic Search for VHE Gamma‐Ray Emission from X‐Ray–bright High‐Frequency BL Lac Objects
journal, July 2008
- Albert, J.; Aliu, E.; Anderhub, H.
- The Astrophysical Journal, Vol. 681, Issue 2
A theoretical unifying scheme for gamma-ray bright blazars
journal, December 1998
- Ghisellini, G.; Celotti, A.; Fossati, G.
- Monthly Notices of the Royal Astronomical Society, Vol. 301, Issue 2
The Likelihood Analysis of EGRET Data
journal, April 1996
- Mattox, J. R.; Bertsch, D. L.; Chiang, J.
- The Astrophysical Journal, Vol. 461
Parameter estimation in astronomy through application of the likelihood ratio
journal, March 1979
- Cash, W.
- The Astrophysical Journal, Vol. 228
THE FIRST CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THE FERMI LARGE AREA TELESCOPE
journal, April 2010
- Abdo, A. A.; Ackermann, M.; Ajello, M.
- The Astrophysical Journal, Vol. 715, Issue 1
The optical and radio properties of X-ray selected Bl Lacertae Objects
book, January 1989
- Stocke, John T.; Morris, Simon L.; Gioia, I. M.
- BL Lac Objects
The medium sensitivity survey - A new sample of X-ray sources with optical identifications and the revised extragalactic log N-log S
journal, August 1984
- Gioia, I. M.; Maccacaro, T.; Schild, R. E.
- The Astrophysical Journal, Vol. 283
The Fermi blazars' divide
journal, June 2009
- Ghisellini, G.; Maraschi, L.; Tavecchio, F.
- Monthly Notices of the Royal Astronomical Society: Letters, Vol. 396, Issue 1
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
TeV gamma rays from BL Lac objects due to synchrotron radiation of extremely high energy protons
journal, November 2000
- Aharonian, F. A.
- New Astronomy, Vol. 5, Issue 7
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
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
BL Lac objects in the synchrotron proton blazar model
journal, March 2003
- Mücke, A.; Protheroe, R. J.; Engel, R.
- Astroparticle Physics, Vol. 18, Issue 6
THE FIRST SWIFT ULTRAVIOLET/OPTICAL TELESCOPE GRB AFTERGLOW CATALOG
journal, December 2008
- Roming, P. W. A.; Koch, T. S.; Oates, S. R.
- The Astrophysical Journal, Vol. 690, Issue 1
Systematic search for VHE gamma-ray emission from X-ray bright high-frequency BL Lac objects
text, January 2007
- Meyer, M.
- arXiv
The First Swift Ultra-Violet/Optical Telescope GRB Afterglow Catalog
text, January 2008
- Roming, P. W. A.; Koch, T. S.; Oates, S. R.
- arXiv
A New Mirror Alignment System for the VERITAS Telescopes
text, January 2009
- McCann, A.; Hanna, D.; Kildea, J.
- arXiv
The Spectral Energy Distribution of Fermi bright blazars
text, January 2009
- Abdo, A. A.; Ackermann, M.; Ajello, M.
- arXiv
The First Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope
text, January 2010
- Abdo, A. A.
- arXiv
BL Lac Objects in the Synchrotron Proton Blazar Model
text, January 2002
- Muecke, A.; Protheroe, R. J.; Engel, R.
- arXiv
On characterising the variability properties of X-ray light curves from active galaxies
text, January 2003
- Vaughan, S.; Edelson, R.; Warwick, R. S.
- arXiv
The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections
text, January 2005
- Kalberla, P. M. W.; Burton, W. B.; Hartmann, Dap
- arXiv
Works referencing / citing this record:
Spectroscopy of high-energy BL Lacertae objects with X-shooter on the VLT
journal, April 2014
- Pita, S.; Goldoni, P.; Boisson, C.
- Astronomy & Astrophysics, Vol. 565
The Imprint of the Extragalactic Background Light in the Gamma-Ray Spectra of Blazars
journal, November 2012
- Ackermann, M.; Ajello, M.; Allafort, A.
- Science, Vol. 338, Issue 6111
SPECTRAL ANALYSIS OF FERMI -LAT BLAZARS ABOVE 50 GEV
journal, November 2015
- Domínguez, Alberto; Ajello, Marco
- The Astrophysical Journal, Vol. 813, Issue 2
GeV-TeV γ $\gamma $ -ray energy spectral break of BL Lac objects
journal, August 2018
- Zhong, W.; Liu, W. G.; Zheng, Y. G.
- Astrophysics and Space Science, Vol. 363, Issue 9
Extragalactic Background Light from Hierarchical Galaxy Formation: Gamma-Ray Attenuation up to the Epoch of Cosmic Reionization and the First Stars
journal, April 2013
- Inoue, Yoshiyuki; Inoue, Susumu; Kobayashi, Masakazu A. R.
- The Astrophysical Journal, Vol. 768, Issue 2
Extragalactic Background Light from Hierarchical Galaxy Formation: Gamma-ray Attenuation up to the Epoch of Cosmic Reionization and the First Stars
text, January 2012
- Inoue, Yoshiyuki; Inoue, Susumu; Kobayashi, Masakazu A. R.
- arXiv
First lower limits on the photon-axion-like particle coupling from very high energy gamma-ray observation
text, January 2013
- Meyer, Manuel; Horns, Dieter; Raue, Martin
- arXiv
The Firm Redshift Lower Limit of the Most Distant TeV-Detected Blazar PKS 1424+240
text, January 2013
- Furniss, A.; Williams, D. A.; Danforth, C.
- arXiv
The Origin of the Extragalactic Gamma-Ray Background and Implications for Dark-Matter Annihilation
text, January 2015
- Ajello, M.; Gasparrini, D.; Sanchez-Conde, M.
- arXiv
The extragalactic background light, the Hubble constant, and anomalies: conclusions from 20 years of TeV gamma-ray observations
text, January 2015
- Biteau, Jonathan; Williams, David A.
- arXiv
Spectral analysis of Fermi-LAT blazars above 50 GeV
text, January 2015
- Domínguez, Alberto; Ajello, Marco
- arXiv