Extreme blazars studied with Fermi-lat and Suzaku: 1ES 0347–121 and blazar candidate HESS J1943+213

Tanaka, Y. T.; Stawarz, Ł.; Finke, J.; Cheung, C. C.; Dermer, C. D.; Kataoka, J.; Bamba, A.; Dubus, G.; De Naurois, M.; Wagner, S. J.; Fukazawa, Y.

doi:10.1088/0004-637X/787/2/155

Title: Extreme blazars studied with Fermi-lat and Suzaku: 1ES 0347–121 and blazar candidate HESS J1943+213

Journal Article · Sun Jun 01 00:00:00 EDT 2014 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/787/2/155· OSTI ID:22356748

Tanaka, Y. T. ^[1]; Stawarz, Ł. ^[2]; Finke, J.; Cheung, C. C.; Dermer, C. D. ^[3]; Kataoka, J. ^[4]; Bamba, A. ^[5]; Dubus, G. ^[6]; De Naurois, M. ^[7]; Wagner, S. J. ^[8]; Fukazawa, Y. ^[9]

Hiroshima Astrophysical Science Center, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526 (Japan)
Institute of Space and Astronautical Science, JAXA, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210 (Japan)
Space Science Division, Naval Research Laboratory, Washington, DC 20375-5352 (United States)
Research Institute for Science and Engineering, Waseda University, 3- 4-1, Okubo, Shinjuku, Tokyo 169-8555 (Japan)
Department of Physics and Mathematics, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo, Sagamihara, Kanagawa 252-5258 (Japan)
UJF-Grenoble 1/CNRS-INSU, Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) UMR 5274, Grenoble F-38041 (France)
Laboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS/IN2P3, F-91128 Palaiseau (France)
Landessternwarte, Universität Heidelberg, Königstuhl, D-69117 Heidelberg (Germany)
Department of Physical Sciences, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526 (Japan)

We report on our study of high-energy properties of two peculiar TeV emitters: the 'extreme blazar' 1ES 0347–121 and the 'extreme blazar candidate' HESS J1943+213 located near the Galactic plane. Both objects are characterized by quiescent synchrotron emission with flat spectra extending up to the hard X-ray range, and both were reported to be missing GeV counterparts in the Fermi Large Area Telescope (LAT) two-year Source Catalog. We analyze a 4.5 yr accumulation of the Fermi-LAT data, resulting in the detection of 1ES 0347–121 in the GeV band, as well as in improved upper limits for HESS J1943+213. We also present the analysis results of newly acquired Suzaku data for HESS J1943+213. The X-ray spectrum is well represented by a single power law extending up to 25 keV with photon index 2.00 ± 0.02 and a moderate absorption in excess of the Galactic value, which is in agreement with previous X-ray observations. No short-term X-ray variability was found over the 80 ks duration of the Suzaku exposure. Under the blazar hypothesis, we modeled the spectral energy distributions of 1ES 0347–121 and HESS J1943+213, and we derived constraints on the intergalactic magnetic field strength and source energetics. We conclude that although the classification of HESS J1943+213 has not yet been determined, the blazar hypothesis remains the most plausible option since, in particular, the broadband spectra of the two analyzed sources along with the source model parameters closely resemble each other, and the newly available Wide-field Infrared Survey Explorer and UKIRT Infrared Deep Sky Survey data for HESS J1943+213 are consistent with the presence of an elliptical host at the distance of approximately ∼600 Mpc.

Cite

Export

Save

OSTI ID:: 22356748

Journal Information:: Astrophysical Journal, Vol. 787, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X

Country of Publication:: United States

Language:: English

References (85)

A unifying view of the spectral energy distributions of blazars Fossati, G.; Maraschi, L.; Celotti, A. Monthly Notices of the Royal Astronomical Society, Vol. 299, Issue 2 https://doi.org/10.1046/j.1365-8711.1998.01828.x	journal	September 1998
A theoretical unifying scheme for gamma-ray bright blazars Ghisellini, G.; Celotti, A.; Fossati, G. Monthly Notices of the Royal Astronomical Society, Vol. 301, Issue 2 https://doi.org/10.1046/j.1365-8711.1998.02032.x	journal	December 1998
The Palermo Swift -BAT hard X-ray catalogue : II. Results after 39 months of sky survey Cusumano, G.; La Parola, V.; Segreto, A. Astronomy and Astrophysics, Vol. 510 https://doi.org/10.1051/0004-6361/200811184	journal	February 2010
Multi-wavelength observations of H 2356–309 Abramowski, A.; Acero, F.; Aharonian, F. Astronomy and Astrophysics, Vol. 516 https://doi.org/10.1051/0004-6361/201014321	journal	June 2010
HESS J1943+213: a candidate extreme BL Lacertae object Abramowski, A.; Acero, F.; Aharonian, F. Astronomy & Astrophysics, Vol. 529 https://doi.org/10.1051/0004-6361/201116545	journal	March 2011
1ES 0229+200: an extreme blazar with a very high minimum Lorentz factor Kaufmann, S.; Wagner, S. J.; Tibolla, O. Astronomy & Astrophysics, Vol. 534 https://doi.org/10.1051/0004-6361/201117215	journal	October 2011
The HI absorption distance of HESS J1943+213 favours its extragalactic nature Leahy, D. A.; Tian, W. W. Astronomy & Astrophysics, Vol. 539 https://doi.org/10.1051/0004-6361/201118633	journal	March 2012
Discovery of VHE γ -ray emission and multi-wavelength observations of the BL Lacertae object 1RXS J101015.9 − 311909 Abramowski, A.; Acero, F.; Aharonian, F. Astronomy & Astrophysics, Vol. 542 https://doi.org/10.1051/0004-6361/201218910	journal	June 2012
The Swift X-ray Telescope Cluster Survey: data reduction and cluster catalog for the GRB fields Tundo, E.; Moretti, A.; Tozzi, P. Astronomy & Astrophysics, Vol. 547 https://doi.org/10.1051/0004-6361/201219038	journal	October 2012
Exploring the bulk of the BL Lacertae object population: I. Parsec-scale radio structures⋆ Liuzzo, E.; Giroletti, M.; Giovannini, G. Astronomy & Astrophysics, Vol. 560 https://doi.org/10.1051/0004-6361/201322144	journal	November 2013
Extreme synchrotron BL Lac objects: Stretching the blazar sequence Costamante, L.; Ghisellini, G.; Giommi, P. Astronomy & Astrophysics, Vol. 371, Issue 2 https://doi.org/10.1051/0004-6361:20010412	journal	May 2001
Six years of BeppoSAX observations of blazars: A spectral catalog Donato, D.; Sambruna, R. M.; Gliozzi, M. Astronomy & Astrophysics, Vol. 433, Issue 3 https://doi.org/10.1051/0004-6361:20034555	journal	March 2005
The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections Kalberla, P. M. W.; Burton, W. B.; Hartmann, Dap Astronomy & Astrophysics, Vol. 440, Issue 2 https://doi.org/10.1051/0004-6361:20041864	journal	September 2005
Swift XRT and UVOT deep observations of the high-energy peaked BL Lacertae object PKS 0548–322 close to its brightest state Perri, M.; Maselli, A.; Giommi, P. Astronomy & Astrophysics, Vol. 462, Issue 3 https://doi.org/10.1051/0004-6361:20066063	journal	November 2006
Cascading on extragalactic background light d'Avezac, P.; Dubus, G.; Giebels, B. Astronomy & Astrophysics, Vol. 469, Issue 3 https://doi.org/10.1051/0004-6361:20066712	journal	May 2007
Detection of VHE gamma-ray emission from the distant blazar 1ES 1101-232 with HESS and broadband characterisation Aharonian, F.; Akhperjanian, A. G.; Bazer-Bachi, A. R. Astronomy & Astrophysics, Vol. 470, Issue 2 https://doi.org/10.1051/0004-6361:20077057	journal	May 2007
Discovery of VHE γ -rays from the distant BL Lacertae 1ES 0347-121 Aharonian, F.; Akhperjanian, A. G.; Barres de Almeida, U. Astronomy & Astrophysics, Vol. 473, Issue 3 https://doi.org/10.1051/0004-6361:20078412	journal	August 2007
New constraints on the mid-IR EBL from the HESS discovery of VHE γ -rays from 1ES 0229+200 Aharonian, F.; Akhperjanian, A. G.; Barres de Almeida, U. Astronomy & Astrophysics, Vol. 475, Issue 2 https://doi.org/10.1051/0004-6361:20078462	journal	October 2007
The AGN nature of three INTEGRAL sources: IGR J18249–3243, IGR J19443+2117, and IGR J22292+6647 Landi, R.; Stephen, J. B.; Masetti, N. Astronomy & Astrophysics, Vol. 493, Issue 3 https://doi.org/10.1051/0004-6361:200810503	journal	November 2008
A search for arcminute-scale radio emission in BL Lacertae objects Ulvestad, J. S.; Johnston, K. J. The Astronomical Journal, Vol. 89 https://doi.org/10.1086/113500	journal	February 1984
Blazars with arcminute-scale radio halos Ulvestad, J. S.; Antonucci, R. R. J. The Astronomical Journal, Vol. 92 https://doi.org/10.1086/114129	journal	July 1986
The Likelihood Analysis of EGRET Data Mattox, J. R.; Bertsch, D. L.; Chiang, J. The Astrophysical Journal, Vol. 461 https://doi.org/10.1086/177068	journal	April 1996
Maps of Dust Infrared Emission for Use in Estimation of Reddening and Cosmic Microwave Background Radiation Foregrounds Schlegel, David J.; Finkbeiner, Douglas P.; Davis, Marc The Astrophysical Journal, Vol. 500, Issue 2 https://doi.org/10.1086/305772	journal	June 1998
Modeling the Effects of Dust on Galactic Spectral Energy Distributions from the Ultraviolet to the Millimeter Band Silva, Laura; Granato, Gian Luigi; Bressan, Alessandro The Astrophysical Journal, Vol. 509, Issue 1 https://doi.org/10.1086/306476	journal	December 1998
High‐Energy Emission from the TeV Blazar Markarian 501 during Multiwavelength Observations in 1996 Kataoka, J.; Mattox, J. R.; Quinn, J. The Astrophysical Journal, Vol. 514, Issue 1 https://doi.org/10.1086/306918	journal	March 1999
Intrinsic Curvature in the X‐Ray Spectra of BL Lacertae Objects Perlman, Eric S.; Madejski, Greg; Georganopoulos, Markos The Astrophysical Journal, Vol. 625, Issue 2 https://doi.org/10.1086/429688	journal	June 2005
Sub-Milliarcsecond Imaging of Quasars and Active Galactic Nuclei. IV. Fine-Scale Structure Kovalev, Y. Y.; Kellermann, K. I.; Lister, M. L. The Astronomical Journal, Vol. 130, Issue 6 https://doi.org/10.1086/497430	journal	December 2005
INTEGRAL SPI All‐Sky View in Soft Gamma Rays: A Study of Point‐Source and Galactic Diffuse Emission Bouchet, L.; Jourdain, E.; Roques, J. ‐P. The Astrophysical Journal, Vol. 679, Issue 2 https://doi.org/10.1086/529489	journal	June 2008
A Hard X‐Ray View of Two Distant VHE Blazars: 1ES 1101−232 and 1ES 1553+113 Reimer, A.; Costamante, L.; Madejski, G. The Astrophysical Journal, Vol. 682, Issue 2 https://doi.org/10.1086/589641	journal	August 2008
Synchrotron Self‐Compton Analysis of TeV X‐Ray‐Selected BL Lacertae Objects Finke, Justin D.; Dermer, Charles D.; Böttcher, Markus The Astrophysical Journal, Vol. 686, Issue 1 https://doi.org/10.1086/590900	journal	October 2008
The Wide-Field Infrared Survey Explorer (Wise): Mission Description and Initial On-Orbit Performance Wright, Edward L.; Eisenhardt, Peter R. M.; Mainzer, Amy K. The Astronomical Journal, Vol. 140, Issue 6 https://doi.org/10.1088/0004-6256/140/6/1868	journal	November 2010
THE LARGE AREA TELESCOPE ON THE FERMI GAMMA-RAY SPACE TELESCOPE MISSION Atwood, W. B.; Abdo, A. A.; Ackermann, M. The Astrophysical Journal, Vol. 697, Issue 2 https://doi.org/10.1088/0004-637x/697/2/1071	journal	May 2009
SUZAKU WIDE BAND ANALYSIS OF THE X-RAY VARIABILITY OF TeV BLAZAR Mrk 421 IN 2006 Ushio, Masayoshi; Tanaka, Takaaki; Madejski, Grzegorz The Astrophysical Journal, Vol. 699, Issue 2 https://doi.org/10.1088/0004-637x/699/2/1964	journal	June 2009
CHANDRA LOCALIZATIONS AND SPECTRA OF INTEGRAL SOURCES IN THE GALACTIC PLANE: THE CYCLE 9 SAMPLE Tomsick, John A.; Chaty, Sylvain; Rodriguez, Jerome The Astrophysical Journal, Vol. 701, Issue 1 https://doi.org/10.1088/0004-637x/701/1/811	journal	July 2009
Modeling the Extragalactic Background Light from Stars and dust Finke, Justin D.; Razzaque, Soebur; Dermer, Charles D. The Astrophysical Journal, Vol. 712, Issue 1 https://doi.org/10.1088/0004-637x/712/1/238	journal	February 2010
THE JETS OF TeV BLAZARS AT HIGHER RESOLUTION: 43 GHz AND POLARIMETRIC VLBA OBSERVATIONS FROM 2005 TO 2009 Piner, B. Glenn; Pant, Niraj; Edwards, Philip G. The Astrophysical Journal, Vol. 723, Issue 2 https://doi.org/10.1088/0004-637x/723/2/1150	journal	October 2010
A NOVEL APPROACH IN CONSTRAINING ELECTRON SPECTRA IN BLAZAR JETS: THE CASE OF Markarian 421 Ushio, Masayoshi; Stawarz, Łukasz; Takahashi, Tadayuki The Astrophysical Journal, Vol. 724, Issue 2 https://doi.org/10.1088/0004-637x/724/2/1509	journal	November 2010
INSIGHTS INTO THE HIGH-ENERGY γ-RAY EMISSION OF MARKARIAN 501 FROM EXTENSIVE MULTIFREQUENCY OBSERVATIONS IN THE FERMI ERA Abdo, A. A.; Ackermann, M.; Ajello, M. The Astrophysical Journal, Vol. 727, Issue 2 https://doi.org/10.1088/0004-637x/727/2/129	journal	January 2011
THE SECOND CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THE FERMI LARGE AREA TELESCOPE Ackermann, M.; Ajello, M.; Allafort, A. The Astrophysical Journal, Vol. 743, Issue 2 https://doi.org/10.1088/0004-637x/743/2/171	journal	December 2011
THE COSMOLOGICAL IMPACT OF LUMINOUS TeV BLAZARS. I. IMPLICATIONS OF PLASMA INSTABILITIES FOR THE INTERGALACTIC MAGNETIC FIELD AND EXTRAGALACTIC GAMMA-RAY BACKGROUND Broderick, Avery E.; Chang, Philip; Pfrommer, Christoph The Astrophysical Journal, Vol. 752, Issue 1 https://doi.org/10.1088/0004-637x/752/1/22	journal	May 2012
MULTIWAVELENGTH OBSERVATIONS OF THE AGN 1ES 0414+009 WITH VERITAS, FERMI -LAT, SWIFT -XRT, AND MDM Aliu, E.; Archambault, S.; Arlen, T. The Astrophysical Journal, Vol. 755, Issue 2 https://doi.org/10.1088/0004-637x/755/2/118	journal	August 2012
Very long Baseline Interferometry Search for the Radio Counterpart of hess J1943+213 Gabányi, K. É.; Dubner, G.; Giacani, E. The Astrophysical Journal, Vol. 762, Issue 1 https://doi.org/10.1088/0004-637x/762/1/63	journal	December 2012
Compton Dominance and the Blazar Sequence Finke, Justin D. The Astrophysical Journal, Vol. 763, Issue 2 https://doi.org/10.1088/0004-637x/763/2/134	journal	January 2013
FERMI LARGE AREA TELESCOPE SECOND SOURCE CATALOG Nolan, P. L.; Abdo, A. A.; Ackermann, M. The Astrophysical Journal Supplement Series, Vol. 199, Issue 2 https://doi.org/10.1088/0067-0049/199/2/31	journal	March 2012
THE 70 MONTH SWIFT -BAT ALL-SKY HARD X-RAY SURVEY Baumgartner, W. H.; Tueller, J.; Markwardt, C. B. The Astrophysical Journal Supplement Series, Vol. 207, Issue 2 https://doi.org/10.1088/0067-0049/207/2/19	journal	July 2013
Discovery of Variability in the very high Energy γ-Ray Emission of 1es 1218+304 with Veritas Acciari, V. A.; Aliu, E.; Beilicke, M. The Astrophysical Journal, Vol. 709, Issue 2 https://doi.org/10.1088/2041-8205/709/2/l163	journal	January 2010
The Discovery of γ-Ray Emission from the Blazar rgb J0710+591 Acciari, V. A.; Aliu, E.; Arlen, T. The Astrophysical Journal, Vol. 715, Issue 1 https://doi.org/10.1088/2041-8205/715/1/l49	journal	April 2010
TIME DELAY OF CASCADE RADIATION FOR TeV BLAZARS AND THE MEASUREMENT OF THE INTERGALACTIC MAGNETIC FIELD Dermer, Charles D.; Cavadini, Massimo; Razzaque, Soebur The Astrophysical Journal, Vol. 733, Issue 2 https://doi.org/10.1088/2041-8205/733/2/l21	journal	May 2011
FERMI /LAT OBSERVATIONS OF 1ES 0229+200: IMPLICATIONS FOR EXTRAGALACTIC MAGNETIC FIELDS AND BACKGROUND LIGHT Vovk, Ie.; Taylor, A. M.; Semikoz, D. The Astrophysical Journal, Vol. 747, Issue 1 https://doi.org/10.1088/2041-8205/747/1/l14	journal	February 2012
The missing GeV -ray binary: searching for HESS J0632+057 with Fermi-LAT Caliandro, G. A.; Hill, A. B.; Torres, D. F. Monthly Notices of the Royal Astronomical Society, Vol. 436, Issue 1 https://doi.org/10.1093/mnras/stt1615	journal	September 2013
A simplified view of blazars: the γ-ray case Giommi, P.; Padovani, P.; Polenta, G. Monthly Notices of the Royal Astronomical Society, Vol. 431, Issue 2 https://doi.org/10.1093/mnras/stt305	journal	March 2013
The X-Ray Observatory Suzaku Mitsuda, Kazuhisa; Bautz, Mark; Inoue, Hajime Publications of the Astronomical Society of Japan, Vol. 59, Issue sp1 https://doi.org/10.1093/pasj/59.sp1.s1	journal	January 2007
X-Ray Imaging Spectrometer (XIS) on Board Suzaku Koyama, Katsuji; Tsunemi, Hiroshi; Dotani, Tadayasu Publications of the Astronomical Society of Japan, Vol. 59, Issue sp1 https://doi.org/10.1093/pasj/59.sp1.s23	journal	January 2007
Hard X-Ray Detector (HXD) on Board Suzaku Takahashi, Tadayuki; Abe, Keiichi; Endo, Manabu Publications of the Astronomical Society of Japan, Vol. 59, Issue sp1 https://doi.org/10.1093/pasj/59.sp1.s35	journal	January 2007
In-Orbit Performance of the Hard X-Ray Detector on Board Suzaku Kokubun, Motohide; Makishima, Kazuo; Takahashi, Tadayuki Publications of the Astronomical Society of Japan, Vol. 59, Issue sp1 https://doi.org/10.1093/pasj/59.sp1.s53	journal	January 2007
The blazar sequence: a new perspective Ghisellini, G.; Tavecchio, F. Monthly Notices of the Royal Astronomical Society, Vol. 387, Issue 4 https://doi.org/10.1111/j.1365-2966.2008.13360.x	journal	July 2008
The UKIDSS Galactic Plane Survey Lucas, P. W.; Hoare, M. G.; Longmore, A. Monthly Notices of the Royal Astronomical Society, Vol. 391, Issue 1 https://doi.org/10.1111/j.1365-2966.2008.13924.x	journal	November 2008
TeV BL Lac objects at the dawn of the Fermi era Tavecchio, F.; Ghisellini, G.; Ghirlanda, G. Monthly Notices of the Royal Astronomical Society, Vol. 401, Issue 3 https://doi.org/10.1111/j.1365-2966.2009.15784.x	journal	January 2010
Extreme TeV blazars and the intergalactic magnetic field: Extreme blazars and IGMF Tavecchio, F.; Ghisellini, G.; Bonnoli, G. Monthly Notices of the Royal Astronomical Society, Vol. 414, Issue 4 https://doi.org/10.1111/j.1365-2966.2011.18657.x	journal	April 2011
A simplified view of blazars: clearing the fog around long-standing selection effects: A simplified view of blazars Giommi, P.; Padovani, P.; Polenta, G. Monthly Notices of the Royal Astronomical Society, Vol. 420, Issue 4 https://doi.org/10.1111/j.1365-2966.2011.20044.x	journal	February 2012
The hard TeV spectrum of 1ES 0229+200: new clues from Swift Tavecchio, F.; Ghisellini, G.; Ghirlanda, G. Monthly Notices of the Royal Astronomical Society: Letters, Vol. 399, Issue 1 https://doi.org/10.1111/j.1745-3933.2009.00724.x	journal	October 2009
A New Population of Very High Energy Gamma-Ray Sources in the Milky Way Aharonian, F. Science, Vol. 307, Issue 5717 https://doi.org/10.1126/science.1108643	journal	March 2005
Evidence for Strong Extragalactic Magnetic Fields from Fermi Observations of TeV Blazars Neronov, A.; Vovk, I. Science, Vol. 328, Issue 5974 https://doi.org/10.1126/science.1184192	journal	April 2010
Insights into the High-energy γ-ray Emission of Markarian 501 from Extensive Multifrequency Observations in the Fermi Era Abdou, Y.; Acciari, V. A.; Ackermann, M. Institute of Physics https://doi.org/10.17877/de290r-4295	text	January 2011
New constraints on the Mid-IR EBL from the HESS discovery of VHE gamma rays from 1ES 0229+200 Collaboration, Hess; Aharonian, F. arXiv https://doi.org/10.48550/arxiv.0709.4584	text	January 2007
INTEGRAL SPI All-Sky View in Soft Gamma Rays: Study of Point Source and Galactic Diffuse Emissions Bouchet, L.; Jourdain, E.; Roques, J. P. arXiv https://doi.org/10.48550/arxiv.0801.2086	text	January 2008
Synchrotron Self-Compton Analysis of TeV X-ray Selected BL Lacertae Objects Finke, Justin; Dermer, Charles; Boettcher, Markus arXiv https://doi.org/10.48550/arxiv.0802.1529	text	January 2008
The blazar sequence: a new perspective Ghisellini, G.; Tavecchio, F. arXiv https://doi.org/10.48550/arxiv.0802.1918	text	January 2008
The AGN nature of three INTEGRAL sources: IGR J18249-3243, IGR J19443+2117 and IGR J22292+6647 Landi, R.; Stephen, J. B.; Masetti, N. arXiv https://doi.org/10.48550/arxiv.0811.2318	text	January 2008
Suzaku Wide Band Analysis of the X-ray Variability of TeV Blazar Mrk 421 in 2006 Ushio, Masayoshi; Tanaka, Takaaki; Madejski, Grzegorz arXiv https://doi.org/10.48550/arxiv.0905.0698	text	January 2009
The hard TeV spectrum of 1ES 0229+200: new clues from Swift Tavecchio, F.; Ghisellini, G.; Ghirlanda, G. arXiv https://doi.org/10.48550/arxiv.0905.0899	text	January 2009
The Palermo Swift-BAT Hard X-ray Catalogue. II- Results after 39 months of sky survey Cusumano, G.; La Parola, V.; Segreto, A. arXiv https://doi.org/10.48550/arxiv.0906.4788	text	January 2009
TeV BL Lac objects at the dawn of the Fermi era Tavecchio, F.; Ghisellini, G.; Ghirlanda, G. arXiv https://doi.org/10.48550/arxiv.0909.0651	text	January 2009
Multi-wavelength Observations of H 2356-309 Collaboration, Hess; Abramowski, A.; Acero, F. arXiv https://doi.org/10.48550/arxiv.1004.2089	text	January 2010
The Discovery of gamma-Ray Emission From The Blazar RGB J0710+591 Acciari, V. A.; Aliu, E.; Arlen, T. arXiv https://doi.org/10.48550/arxiv.1005.0041	text	January 2010
The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance Wright, Edward L.; Eisenhardt, Peter R. M.; Mainzer, Amy arXiv https://doi.org/10.48550/arxiv.1008.0031	text	January 2010
A Novel Approach in Constraining Electron Spectra in Blazar Jets: The Case of Markarian 421 Ushio, M.; Stawarz, L.; Takahashi, T. arXiv https://doi.org/10.48550/arxiv.1009.2666	text	January 2010
Insights Into the High-Energy Gamma-ray Emission of Markarian 501 from Extensive Multifrequency Observations in the Fermi Era Collaboration, Lat; al., A. A. Abdo et; collaboration, the MAGIC arXiv https://doi.org/10.48550/arxiv.1011.5260	text	January 2010
The Cosmological Impact of Luminous TeV Blazars I: Implications of Plasma Instabilities for the Intergalactic Magnetic Field and Extragalactic Gamma-Ray Background Broderick, Avery E.; Chang, Philip; Pfrommer, Christoph arXiv https://doi.org/10.48550/arxiv.1106.5494	text	January 2011
1ES 0229+200: An extreme blazar with a very high minimum Lorentz factor Kaufmann, S.; Wagner, S. J.; Tibolla, O. arXiv https://doi.org/10.48550/arxiv.1109.3628	text	January 2011
Fermi/LAT observations of 1ES 0229+200: implications for extragalactic magnetic fields and background light Vovk, Ievgen; Taylor, Andrew M.; Semikoz, Dmitri arXiv https://doi.org/10.48550/arxiv.1112.2534	text	January 2011
The HI absorption distance of HESS J1943+213 favours its extragalactic nature leahy, Denis; Tian, Wenwu arXiv https://doi.org/10.48550/arxiv.1112.2655	text	January 2011
Multiwavelength observations of the AGN 1ES 0414+009 with VERITAS, Fermi-LAT, Swift-XRT, and MDM Aliu, E.; Archambault, S.; Arlen, T. arXiv https://doi.org/10.48550/arxiv.1206.4080	text	January 2012
Compton Dominance and the Blazar Sequence Finke, Justin arXiv https://doi.org/10.48550/arxiv.1212.0869	text	January 2012
The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections Kalberla, P. M. W.; Burton, W. B.; Hartmann, Dap arXiv https://doi.org/10.48550/arxiv.astro-ph/0504140	text	January 2005

Cited By (13)

The γ -ray emitting region in low synchrotron peak blazars: Testing self-synchrotron Compton and external Compton scenarios Arsioli, B.; Chang, Y-L. Astronomy & Astrophysics, Vol. 616 https://doi.org/10.1051/0004-6361/201833005	journal	August 2018
Extreme HBL behavior of Markarian 501 during 2012 Ahnen, M. L.; Ansoldi, S.; Antonelli, L. A. Astronomy & Astrophysics, Vol. 620 https://doi.org/10.1051/0004-6361/201833704	journal	December 2018
Constraints on the Intergalactic Magnetic Field with Gamma-Ray Observations of Blazars Finke, Justin D.; Reyes, Luis C.; Georganopoulos, Markos The Astrophysical Journal, Vol. 814, Issue 1 https://doi.org/10.1088/0004-637x/814/1/20	journal	November 2015
A hadronic origin for ultra-high-frequency-peaked BL Lac objects Cerruti, M.; Zech, A.; Boisson, C. Monthly Notices of the Royal Astronomical Society, Vol. 448, Issue 1 https://doi.org/10.1093/mnras/stu2691	journal	February 2015
Extreme- and high-synchrotron-peaked blazars at the limit of Fermi-LAT detectability: the γ-ray spectrum of 1BIGB sources Arsioli, B.; Barres de Almeida, U.; Prandini, E. Monthly Notices of the Royal Astronomical Society, Vol. 480, Issue 2 https://doi.org/10.1093/mnras/sty1975	journal	July 2018
Search for GeV $γ$ -Ray Pair Halos Around Low Redshift Blazars Chen, Wenlei; Buckley, James H.; Ferrer, Francesc Physical Review Letters, Vol. 115, Issue 21 https://doi.org/10.1103/physrevlett.115.211103	journal	November 2015
Baryon Loading Efficiency and Particle Acceleration Efficiency of Relativistic Jets: Cases for low Luminosity bl lacs Inoue, Yoshiyuki; Tanaka, Yasuyuki T. The Astrophysical Journal, Vol. 828, Issue 1 https://doi.org/10.3847/0004-637x/828/1/13	journal	August 2016
HESS J1943+213: An Extreme Blazar Shining through the Galactic Plane Archer, A.; Benbow, W.; Bird, R. The Astrophysical Journal, Vol. 862, Issue 1 https://doi.org/10.3847/1538-4357/aacbd0	journal	July 2018
HESS J1943+213: An Extreme Blazar Shining through the Galactic Plane Archer, A.; Benbow, W.; Bird, R. Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2018-02737	text	January 2018
The extreme HBL behaviour of Markarian 501 during 2012 Ahnen, M. L.; Ansoldi, S.; Antonelli, L. A. Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2019-00102	text	January 2018
A hadronic origin for ultra-high-frequency-peaked BL Lac objects Cerruti, M.; Zech, A.; Boisson, C. arXiv https://doi.org/10.48550/arxiv.1411.5968	text	January 2014
Baryon Loading Efficiency and Particle Acceleration Efficiency of Relativistic Jets: Cases For Low Luminosity BL Lacs Inoue, Yoshiyuki; Tanaka, Yasuyuki T. arXiv https://doi.org/10.48550/arxiv.1603.07623	text	January 2016
HESS J1943+213: An Extreme Blazar Shining Through The Galactic Plane Collaboration, The VERITAS; Archer, A.; Benbow, W. arXiv https://doi.org/10.48550/arxiv.1806.04144	text	January 2018

Similar Records

Extreme Blazars Studied With Fermi -Lat And Suzaku : 1es 0347–121 And Blazar Candidate Hess J1943+213

Journal Article · Wed May 14 00:00:00 EDT 2014 · The Astrophysical Journal · OSTI ID:22356748

Tanaka, Y. T.; Stawarz, Ł.; Finke, J.; +9 more

The host galaxy and Fermi -LAT counterpart of HESS J1943+213

Journal Article · Thu Nov 06 00:00:00 EST 2014 · Astronomy and Astrophysics · OSTI ID:22356748

Peter, D.; Domainko, W.; Sanchez, D. A.; +2 more

HESS J1943+213: A candidate extreme BL Lacertae object

Journal Article · Wed Mar 30 00:00:00 EDT 2011 · Astronomy and Astrophysics · OSTI ID:22356748

Abramowski, A.; Acero, F.; Aharonian, F.; +198 more

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ABSORPTION
APPROXIMATIONS
BL LACERTAE OBJECTS
CATALOGS
CLASSIFICATION
DETECTION
EMISSION
ENERGY SPECTRA
GAMMA RADIATION
HARD X RADIATION
HYPOTHESIS
INFRARED SURVEYS
MAGNETIC FIELDS
PHOTONS
STARS
SYNCHROTRON RADIATION
TELESCOPES
X-RAY GALAXIES
X-RAY SPECTRA

Title: Extreme blazars studied with Fermi-lat and Suzaku: 1ES 0347–121 and blazar candidate HESS J1943+213

Citation Formats

References (85)

Cited By (13)

Similar Records

Related Subjects