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Title: HESS and Fermi-LAT discovery of γ-rays from the blazar 1ES 1312-423

Abstract

In this study, a deep observation campaign carried out by the High Energy Stereoscopic System (HESS) on Centaurus A enabled the discovery of γ-rays from the blazar 1ES 1312-423, 2° away from the radio galaxy. With a differential flux at 1 TeV of (Φ1 TeV) = (1.9 ± 0.6stat ± 0.4sys) × 10-13 cm-2 s-1 TeV-1 corresponding to 0.5 percent of the Crab nebula differential flux and a spectral index Γ = 2.9 ± 0.5stat ± 0.2sys, 1ES 1312-423 is one of the faintest sources ever detected in the very high energy (E > 100 GeV) extragalactic sky. A careful analysis using three and a half years of Fermi Large Area Telescope (Fermi-LAT) data allows the discovery at high energies (E > 100 MeV) of a hard spectrum (Γ = 1.4 ± 0.4stat ± 0.2sys) source coincident with 1ES 1312-423. Radio, optical, UV and X-ray observations complete the spectral energy distribution of this blazar, now covering 16 decades in energy. Lastly, the emission is successfully fitted with a synchrotron self-Compton model for the non-thermal component, combined with a blackbody spectrum for the optical emission from the host galaxy.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less
Publication Date:
Research Org.:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
HESS Collaboration; Fermi-LAT Collaboration
OSTI Identifier:
1356589
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 434; Journal Issue: 3; Journal ID: ISSN 0035-8711
Publisher:
Royal Astronomical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; radiation mechanisms: non-thermal; galaxies: active; BL Lacertae objects: individual: 1ES 1312–423; galaxies: jets; gamma-rays: galaxies

Citation Formats

Abramowski, A., Acero, F., Aharonian, F., Akhperjanian, A. G., Anguner, E., Anton, G., Balenderan, S., Balzer, A., Barnacka, A., Becherini, Y., Becker Tjus, J., Bernlohr, K., Birsin, E., Bissaldi, E., Biteau, J., Boisson, C., Bolmont, J., Bordas, P., Brucker, J., Brun, F., Brun, P., Bulik, T., Carrigan, S., Casanova, S., Cerruti, M., Chadwick, P. M., Chalme-Calvet, R., Chaves, R. C. G., Cheesebrough, A., Chretien, M., Colafrancesco, S., Cologna, G., Conrad, J., Couturier, C., Dalton, M., Daniel, M. K., Davids, I. D., Degrange, B., Deil, C., deWilt, P., Dickinson, H. J., Djannati-Atai, A., Domainko, W., Drury, L. O., Dubus, G., Dutson, K., Dyks, J., Dyrda, M., Edwards, T., Egberts, K., Eger, P., Espigat, P., Farnier, C., Fegan, S., Feinstein, F., Fernandes, M. V., Fernandez, D., Fiasson, A., Fontaine, G., Forster, A., Fussling, M., Gajdus, M., Gallant, Y. A., Garrigoux, T., Gast, H., Giebels, B., Glicenstein, J. F., Goring, D., Grondin, M. -. H., Grudzinska, M., Haffner, S., Hague, J. D., Hahn, J., Harris, J., Heinzelmann, G., Henri, G., Hermann, G., Hervet, O., Hillert, A., Hinton, J. A., Hofmann, W., Hofverberg, P., Holler, M., Horns, D., Jacholkowska, A., Jahn, C., Jamrozy, M., Janiak, M., Jankowsky, F., Jung, I., Kastendieck, M. A., Katarzynski, K., Katz, U., Kaufmann, S., Khelifi, B., Kieffer, M., Klepser, S., Klochkov, D., Kluzniak, W., Kneiske, T., Kolitzus, D., Komin, N., Kosack, K., Krakau, S., Krayzel, F., Kruger, P. P., Laffon, H., Lamanna, G., Lefaucheur, J., Lemoine-Goumard, M., Lenain, J. -. P., Lennarz, D., Lohse, T., Lopatin, A., Lu, C. -. C., Marandon, V., Marcowith, A., Maurin, G., Maxted, N., Mayer, M., McComb, T. J. L., Medina, M. C., Mehault, J., Menzler, U., Meyer, M., Moderski, R., Mohamed, M., Moulin, E., Murach, T., Naumann, C. L., de Naurois, M., Nedbal, D., Niemiec, J., Nolan, S. J., Oakes, L., Ohm, S., de Ona Wilhelmi, E., Opitz, B., Ostrowski, M., Oya, I., Panter, M., Parsons, R. D., Paz Arribas, M., Pekeur, N. W., Pelletier, G., Perez, J., Petrucci, P. -. O., Peyaud, B., Pita, S., Poon, H., Puhlhofer, G., Punch, M., Quirrenbach, A., Raab, S., Raue, M., Reimer, A., Reimer, O., Renaud, M., de los Reyes, R., Rieger, F., Rob, L., Rosier-Lees, S., Rowell, G., Rudak, B., Rulten, C. B., Sahakian, V., Sanchez, D. A., Santangelo, A., Schlickeiser, R., Schussler, F., Schulz, A., Schwanke, U., Schwarzburg, S., Schwemmer, S., Sol, H., Spengler, G., Spiess, F., Stawarz, L., Steenkamp, R., Stegmann, C., Stinzing, F., Stycz, K., Sushch, I., Szostek, A., Tavernet, J. -. P., Terrier, R., Tluczykont, M., Trichard, C., Valerius, K., van Eldik, C., Vasileiadis, G., Venter, C., Viana, A., Vincent, P., Volk, H. J., Volpe, F., Vorster, M., Wagner, S. J., Wagner, P., Ward, M., Weidinger, M., White, R., Wierzcholska, A., Willmann, P., Wornlein, A., Wouters, D., Zacharias, M., Zajczyk, A., Zdziarski, A. A., Zech, A., Zechlin, H. -. S., Perkins, J. S., Ojha, R., Stevens, J., Edwards, P. G., and Kadler, M. HESS and Fermi-LAT discovery of γ-rays from the blazar 1ES 1312-423. United States: N. p., 2013. Web. doi:10.1093/mnras/stt1081.
Abramowski, A., Acero, F., Aharonian, F., Akhperjanian, A. G., Anguner, E., Anton, G., Balenderan, S., Balzer, A., Barnacka, A., Becherini, Y., Becker Tjus, J., Bernlohr, K., Birsin, E., Bissaldi, E., Biteau, J., Boisson, C., Bolmont, J., Bordas, P., Brucker, J., Brun, F., Brun, P., Bulik, T., Carrigan, S., Casanova, S., Cerruti, M., Chadwick, P. M., Chalme-Calvet, R., Chaves, R. C. G., Cheesebrough, A., Chretien, M., Colafrancesco, S., Cologna, G., Conrad, J., Couturier, C., Dalton, M., Daniel, M. K., Davids, I. D., Degrange, B., Deil, C., deWilt, P., Dickinson, H. J., Djannati-Atai, A., Domainko, W., Drury, L. O., Dubus, G., Dutson, K., Dyks, J., Dyrda, M., Edwards, T., Egberts, K., Eger, P., Espigat, P., Farnier, C., Fegan, S., Feinstein, F., Fernandes, M. V., Fernandez, D., Fiasson, A., Fontaine, G., Forster, A., Fussling, M., Gajdus, M., Gallant, Y. A., Garrigoux, T., Gast, H., Giebels, B., Glicenstein, J. F., Goring, D., Grondin, M. -. H., Grudzinska, M., Haffner, S., Hague, J. D., Hahn, J., Harris, J., Heinzelmann, G., Henri, G., Hermann, G., Hervet, O., Hillert, A., Hinton, J. A., Hofmann, W., Hofverberg, P., Holler, M., Horns, D., Jacholkowska, A., Jahn, C., Jamrozy, M., Janiak, M., Jankowsky, F., Jung, I., Kastendieck, M. A., Katarzynski, K., Katz, U., Kaufmann, S., Khelifi, B., Kieffer, M., Klepser, S., Klochkov, D., Kluzniak, W., Kneiske, T., Kolitzus, D., Komin, N., Kosack, K., Krakau, S., Krayzel, F., Kruger, P. P., Laffon, H., Lamanna, G., Lefaucheur, J., Lemoine-Goumard, M., Lenain, J. -. P., Lennarz, D., Lohse, T., Lopatin, A., Lu, C. -. C., Marandon, V., Marcowith, A., Maurin, G., Maxted, N., Mayer, M., McComb, T. J. L., Medina, M. C., Mehault, J., Menzler, U., Meyer, M., Moderski, R., Mohamed, M., Moulin, E., Murach, T., Naumann, C. L., de Naurois, M., Nedbal, D., Niemiec, J., Nolan, S. J., Oakes, L., Ohm, S., de Ona Wilhelmi, E., Opitz, B., Ostrowski, M., Oya, I., Panter, M., Parsons, R. D., Paz Arribas, M., Pekeur, N. W., Pelletier, G., Perez, J., Petrucci, P. -. O., Peyaud, B., Pita, S., Poon, H., Puhlhofer, G., Punch, M., Quirrenbach, A., Raab, S., Raue, M., Reimer, A., Reimer, O., Renaud, M., de los Reyes, R., Rieger, F., Rob, L., Rosier-Lees, S., Rowell, G., Rudak, B., Rulten, C. B., Sahakian, V., Sanchez, D. A., Santangelo, A., Schlickeiser, R., Schussler, F., Schulz, A., Schwanke, U., Schwarzburg, S., Schwemmer, S., Sol, H., Spengler, G., Spiess, F., Stawarz, L., Steenkamp, R., Stegmann, C., Stinzing, F., Stycz, K., Sushch, I., Szostek, A., Tavernet, J. -. P., Terrier, R., Tluczykont, M., Trichard, C., Valerius, K., van Eldik, C., Vasileiadis, G., Venter, C., Viana, A., Vincent, P., Volk, H. J., Volpe, F., Vorster, M., Wagner, S. J., Wagner, P., Ward, M., Weidinger, M., White, R., Wierzcholska, A., Willmann, P., Wornlein, A., Wouters, D., Zacharias, M., Zajczyk, A., Zdziarski, A. A., Zech, A., Zechlin, H. -. S., Perkins, J. S., Ojha, R., Stevens, J., Edwards, P. G., & Kadler, M. HESS and Fermi-LAT discovery of γ-rays from the blazar 1ES 1312-423. United States. https://doi.org/10.1093/mnras/stt1081
Abramowski, A., Acero, F., Aharonian, F., Akhperjanian, A. G., Anguner, E., Anton, G., Balenderan, S., Balzer, A., Barnacka, A., Becherini, Y., Becker Tjus, J., Bernlohr, K., Birsin, E., Bissaldi, E., Biteau, J., Boisson, C., Bolmont, J., Bordas, P., Brucker, J., Brun, F., Brun, P., Bulik, T., Carrigan, S., Casanova, S., Cerruti, M., Chadwick, P. M., Chalme-Calvet, R., Chaves, R. C. G., Cheesebrough, A., Chretien, M., Colafrancesco, S., Cologna, G., Conrad, J., Couturier, C., Dalton, M., Daniel, M. K., Davids, I. D., Degrange, B., Deil, C., deWilt, P., Dickinson, H. J., Djannati-Atai, A., Domainko, W., Drury, L. O., Dubus, G., Dutson, K., Dyks, J., Dyrda, M., Edwards, T., Egberts, K., Eger, P., Espigat, P., Farnier, C., Fegan, S., Feinstein, F., Fernandes, M. V., Fernandez, D., Fiasson, A., Fontaine, G., Forster, A., Fussling, M., Gajdus, M., Gallant, Y. A., Garrigoux, T., Gast, H., Giebels, B., Glicenstein, J. F., Goring, D., Grondin, M. -. H., Grudzinska, M., Haffner, S., Hague, J. D., Hahn, J., Harris, J., Heinzelmann, G., Henri, G., Hermann, G., Hervet, O., Hillert, A., Hinton, J. A., Hofmann, W., Hofverberg, P., Holler, M., Horns, D., Jacholkowska, A., Jahn, C., Jamrozy, M., Janiak, M., Jankowsky, F., Jung, I., Kastendieck, M. A., Katarzynski, K., Katz, U., Kaufmann, S., Khelifi, B., Kieffer, M., Klepser, S., Klochkov, D., Kluzniak, W., Kneiske, T., Kolitzus, D., Komin, N., Kosack, K., Krakau, S., Krayzel, F., Kruger, P. P., Laffon, H., Lamanna, G., Lefaucheur, J., Lemoine-Goumard, M., Lenain, J. -. P., Lennarz, D., Lohse, T., Lopatin, A., Lu, C. -. C., Marandon, V., Marcowith, A., Maurin, G., Maxted, N., Mayer, M., McComb, T. J. L., Medina, M. C., Mehault, J., Menzler, U., Meyer, M., Moderski, R., Mohamed, M., Moulin, E., Murach, T., Naumann, C. L., de Naurois, M., Nedbal, D., Niemiec, J., Nolan, S. J., Oakes, L., Ohm, S., de Ona Wilhelmi, E., Opitz, B., Ostrowski, M., Oya, I., Panter, M., Parsons, R. D., Paz Arribas, M., Pekeur, N. W., Pelletier, G., Perez, J., Petrucci, P. -. O., Peyaud, B., Pita, S., Poon, H., Puhlhofer, G., Punch, M., Quirrenbach, A., Raab, S., Raue, M., Reimer, A., Reimer, O., Renaud, M., de los Reyes, R., Rieger, F., Rob, L., Rosier-Lees, S., Rowell, G., Rudak, B., Rulten, C. B., Sahakian, V., Sanchez, D. A., Santangelo, A., Schlickeiser, R., Schussler, F., Schulz, A., Schwanke, U., Schwarzburg, S., Schwemmer, S., Sol, H., Spengler, G., Spiess, F., Stawarz, L., Steenkamp, R., Stegmann, C., Stinzing, F., Stycz, K., Sushch, I., Szostek, A., Tavernet, J. -. P., Terrier, R., Tluczykont, M., Trichard, C., Valerius, K., van Eldik, C., Vasileiadis, G., Venter, C., Viana, A., Vincent, P., Volk, H. J., Volpe, F., Vorster, M., Wagner, S. J., Wagner, P., Ward, M., Weidinger, M., White, R., Wierzcholska, A., Willmann, P., Wornlein, A., Wouters, D., Zacharias, M., Zajczyk, A., Zdziarski, A. A., Zech, A., Zechlin, H. -. S., Perkins, J. S., Ojha, R., Stevens, J., Edwards, P. G., and Kadler, M. Thu . "HESS and Fermi-LAT discovery of γ-rays from the blazar 1ES 1312-423". United States. https://doi.org/10.1093/mnras/stt1081. https://www.osti.gov/servlets/purl/1356589.
@article{osti_1356589,
title = {HESS and Fermi-LAT discovery of γ-rays from the blazar 1ES 1312-423},
author = {Abramowski, A. and Acero, F. and Aharonian, F. and Akhperjanian, A. G. and Anguner, E. and Anton, G. and Balenderan, S. and Balzer, A. and Barnacka, A. and Becherini, Y. and Becker Tjus, J. and Bernlohr, K. and Birsin, E. and Bissaldi, E. and Biteau, J. and Boisson, C. and Bolmont, J. and Bordas, P. and Brucker, J. and Brun, F. and Brun, P. and Bulik, T. and Carrigan, S. and Casanova, S. and Cerruti, M. and Chadwick, P. M. and Chalme-Calvet, R. and Chaves, R. C. G. and Cheesebrough, A. and Chretien, M. and Colafrancesco, S. and Cologna, G. and Conrad, J. and Couturier, C. and Dalton, M. and Daniel, M. K. and Davids, I. D. and Degrange, B. and Deil, C. and deWilt, P. and Dickinson, H. J. and Djannati-Atai, A. and Domainko, W. and Drury, L. O. and Dubus, G. and Dutson, K. and Dyks, J. and Dyrda, M. and Edwards, T. and Egberts, K. and Eger, P. and Espigat, P. and Farnier, C. and Fegan, S. and Feinstein, F. and Fernandes, M. V. and Fernandez, D. and Fiasson, A. and Fontaine, G. and Forster, A. and Fussling, M. and Gajdus, M. and Gallant, Y. A. and Garrigoux, T. and Gast, H. and Giebels, B. and Glicenstein, J. F. and Goring, D. and Grondin, M. -. H. and Grudzinska, M. and Haffner, S. and Hague, J. D. and Hahn, J. and Harris, J. and Heinzelmann, G. and Henri, G. and Hermann, G. and Hervet, O. and Hillert, A. and Hinton, J. A. and Hofmann, W. and Hofverberg, P. and Holler, M. and Horns, D. and Jacholkowska, A. and Jahn, C. and Jamrozy, M. and Janiak, M. and Jankowsky, F. and Jung, I. and Kastendieck, M. A. and Katarzynski, K. and Katz, U. and Kaufmann, S. and Khelifi, B. and Kieffer, M. and Klepser, S. and Klochkov, D. and Kluzniak, W. and Kneiske, T. and Kolitzus, D. and Komin, N. and Kosack, K. and Krakau, S. and Krayzel, F. and Kruger, P. P. and Laffon, H. and Lamanna, G. and Lefaucheur, J. and Lemoine-Goumard, M. and Lenain, J. -. P. and Lennarz, D. and Lohse, T. and Lopatin, A. and Lu, C. -. C. and Marandon, V. and Marcowith, A. and Maurin, G. and Maxted, N. and Mayer, M. and McComb, T. J. L. and Medina, M. C. and Mehault, J. and Menzler, U. and Meyer, M. and Moderski, R. and Mohamed, M. and Moulin, E. and Murach, T. and Naumann, C. L. and de Naurois, M. and Nedbal, D. and Niemiec, J. and Nolan, S. J. and Oakes, L. and Ohm, S. and de Ona Wilhelmi, E. and Opitz, B. and Ostrowski, M. and Oya, I. and Panter, M. and Parsons, R. D. and Paz Arribas, M. and Pekeur, N. W. and Pelletier, G. and Perez, J. and Petrucci, P. -. O. and Peyaud, B. and Pita, S. and Poon, H. and Puhlhofer, G. and Punch, M. and Quirrenbach, A. and Raab, S. and Raue, M. and Reimer, A. and Reimer, O. and Renaud, M. and de los Reyes, R. and Rieger, F. and Rob, L. and Rosier-Lees, S. and Rowell, G. and Rudak, B. and Rulten, C. B. and Sahakian, V. and Sanchez, D. A. and Santangelo, A. and Schlickeiser, R. and Schussler, F. and Schulz, A. and Schwanke, U. and Schwarzburg, S. and Schwemmer, S. and Sol, H. and Spengler, G. and Spiess, F. and Stawarz, L. and Steenkamp, R. and Stegmann, C. and Stinzing, F. and Stycz, K. and Sushch, I. and Szostek, A. and Tavernet, J. -. P. and Terrier, R. and Tluczykont, M. and Trichard, C. and Valerius, K. and van Eldik, C. and Vasileiadis, G. and Venter, C. and Viana, A. and Vincent, P. and Volk, H. J. and Volpe, F. and Vorster, M. and Wagner, S. J. and Wagner, P. and Ward, M. and Weidinger, M. and White, R. and Wierzcholska, A. and Willmann, P. and Wornlein, A. and Wouters, D. and Zacharias, M. and Zajczyk, A. and Zdziarski, A. A. and Zech, A. and Zechlin, H. -. S. and Perkins, J. S. and Ojha, R. and Stevens, J. and Edwards, P. G. and Kadler, M.},
abstractNote = {In this study, a deep observation campaign carried out by the High Energy Stereoscopic System (HESS) on Centaurus A enabled the discovery of γ-rays from the blazar 1ES 1312-423, 2° away from the radio galaxy. With a differential flux at 1 TeV of (Φ1 TeV) = (1.9 ± 0.6stat ± 0.4sys) × 10-13 cm-2 s-1 TeV-1 corresponding to 0.5 percent of the Crab nebula differential flux and a spectral index Γ = 2.9 ± 0.5stat ± 0.2sys, 1ES 1312-423 is one of the faintest sources ever detected in the very high energy (E > 100 GeV) extragalactic sky. A careful analysis using three and a half years of Fermi Large Area Telescope (Fermi-LAT) data allows the discovery at high energies (E > 100 MeV) of a hard spectrum (Γ = 1.4 ± 0.4stat ± 0.2sys) source coincident with 1ES 1312-423. Radio, optical, UV and X-ray observations complete the spectral energy distribution of this blazar, now covering 16 decades in energy. Lastly, the emission is successfully fitted with a synchrotron self-Compton model for the non-thermal component, combined with a blackbody spectrum for the optical emission from the host galaxy.},
doi = {10.1093/mnras/stt1081},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 3,
volume = 434,
place = {United States},
year = {Thu Aug 01 00:00:00 EDT 2013},
month = {Thu Aug 01 00:00:00 EDT 2013}
}

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Works referenced in this record:

Discovery of very high energy gamma-ray emission from Centaurus A with H.E.S.S
text, January 2009


Six years of BeppoSAX observations of blazars: A spectral catalog
journal, March 2005


The trigger system of the H.E.S.S. telescope array
journal, November 2004


The Swift X-Ray Telescope
journal, October 2005


The connection between x-ray- and radio-selected BL Lacertae objects
journal, May 1995

  • Padovani, Paolo; Giommi, Paolo
  • The Astrophysical Journal, Vol. 444
  • DOI: 10.1086/175631

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
  • DOI: 10.1086/305772

Soft X-Ray Properties of a Complete Sample of Radio-selected BL Lacertae Objects
journal, May 1996

  • Urry, C. Megan; Sambruna, Rita M.; Worrall, D. M.
  • The Astrophysical Journal, Vol. 463
  • DOI: 10.1086/177259

FIVE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE OBSERVATIONS: DATA PROCESSING, SKY MAPS, AND BASIC RESULTS
journal, February 2009

  • Hinshaw, G.; Weiland, J. L.; Hill, R. S.
  • The Astrophysical Journal Supplement Series, Vol. 180, Issue 2
  • DOI: 10.1088/0067-0049/180/2/225

FERMI LARGE AREA TELESCOPE FIRST SOURCE CATALOG
journal, May 2010

  • Abdo, A. A.; Ackermann, M.; Ajello, M.
  • The Astrophysical Journal Supplement Series, Vol. 188, Issue 2
  • DOI: 10.1088/0067-0049/188/2/405

Discovery of very high Energy γ-Ray Emission from Centaurus a with H.E.S.S.
journal, March 2009


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
  • DOI: 10.1088/0067-0049/199/2/31

On the Spectral Energy Distributions of Blazars
journal, May 1996

  • Sambruna, Rita M.; Maraschi, Laura; Urry, C. Megan
  • The Astrophysical Journal, Vol. 463
  • DOI: 10.1086/177260

The Einstein Observatory Extended Medium-Sensitivity Survey. I - X-ray data and analysis
journal, February 1990

  • Gioia, I. M.; Maccacaro, T.; Schild, R. E.
  • The Astrophysical Journal Supplement Series, Vol. 72
  • DOI: 10.1086/191426

Background modelling in very-high-energy γ -ray astronomy
journal, April 2007


The Properties of the X-Ray-selected EMSS Sample of BL Lacertae Objects
journal, October 2000

  • Rector, Travis A.; Stocke, John T.; Perlman, Eric S.
  • The Astronomical Journal, Vol. 120, Issue 4
  • DOI: 10.1086/301587

Two-Flow Model for Extragalactic Radio Jets
journal, January 1989


The Bulk Lorentz Factor Crisis of TeV Blazars: Evidence for an Inhomogeneous Pileup Energy Distribution?
journal, March 2006

  • Henri, Gilles; Sauge, Ludovic
  • The Astrophysical Journal, Vol. 640, Issue 1
  • DOI: 10.1086/500039

The Australia Telescope Compact Array Broad-band Backend: description and first results★: The Compact Array Broad-band Backend (CABB)
journal, August 2011


Extragalactic optical-infrared background radiation, its time evolution and the cosmic photon-photon opacity
journal, June 2008


UBVRI passbands
journal, October 1990

  • Bessell, M. S.
  • Publications of the Astronomical Society of the Pacific, Vol. 102
  • DOI: 10.1086/132749

SPECTRAL PROPERTIES OF BRIGHT FERMI -DETECTED BLAZARS IN THE GAMMA-RAY BAND
journal, January 2010


The Properties of the X-Ray-Selected EMSS Sample of BL Lac Objects
text, January 2000


Constraints on the Physical Parameters of TeV Blazars
journal, December 1998

  • Tavecchio, Fabrizio; Maraschi, Laura; Ghisellini, Gabriele
  • The Astrophysical Journal, Vol. 509, Issue 2
  • DOI: 10.1086/306526

Photometric calibration of the Swift ultraviolet/optical telescope: Photometric calibration of the Swift UVOT
journal, December 2007


FERMI /LARGE AREA TELESCOPE BRIGHT GAMMA-RAY SOURCE LIST
journal, June 2009

  • Abdo, A. A.; Ackermann, M.; Ajello, M.
  • The Astrophysical Journal Supplement Series, Vol. 183, Issue 1
  • DOI: 10.1088/0067-0049/183/1/46

The Einstein Observatory Extended Medium-Sensitivity Survey. II - The optical identifications
journal, May 1991

  • Stocke, John T.; Morris, Simon L.; Gioia, I. M.
  • The Astrophysical Journal Supplement Series, Vol. 76
  • DOI: 10.1086/191582

Observations of the Crab nebula with HESS
journal, September 2006

  • Aharonian, F.; Akhperjanian, A. G.; Bazer-Bachi, A. R.
  • Astronomy & Astrophysics, Vol. 457, Issue 3
  • DOI: 10.1051/0004-6361:20065351

The 6dF Galaxy Survey: final redshift release (DR3) and southern large-scale structures
journal, October 2009


Constraints on the Physical Parameters of TeV Blazars
text, January 1998


Background Modelling in Very-High-Energy gamma-ray Astronomy
text, January 2006


On characterizing the variability properties of X-ray light curves from active galaxies
journal, November 2003


Interstellar Dust Grains
journal, September 2003


SUMSS: a wide-field radio imaging survey of the southern sky - II. The source catalogue
journal, July 2003


The complete sample of 1 Jansky BL Lacertae objects. I - Summary properties
journal, June 1991

  • Stickel, M.; Fried, J. W.; Kuehr, H.
  • The Astrophysical Journal, Vol. 374
  • DOI: 10.1086/170133

THE SPECTRAL ENERGY DISTRIBUTION OF FERMI BRIGHT BLAZARS
journal, May 2010


Estimates of the Total Energy in Particles and Magnetic Field in the Non-Thermal Radio Sources.
journal, January 1959

  • Burbidge, G. R.
  • The Astrophysical Journal, Vol. 129
  • DOI: 10.1086/146680

Intrinsic Curvature in the X‐Ray Spectra of BL Lacertae Objects
journal, June 2005

  • Perlman, Eric S.; Madejski, Greg; Georganopoulos, Markos
  • The Astrophysical Journal, Vol. 625, Issue 2
  • DOI: 10.1086/429688

The extragalactic optical-infrared background radiations, their time evolution and the cosmic photon-photon opacity
text, January 2008


The multifrequency emission of Mrk 501: From radio to TeV gamma-rays
journal, March 2001


Model for the High-Energy Emission from Blazars
journal, October 1993

  • Dermer, Charles D.; Schlickeiser, Reinhard
  • The Astrophysical Journal, Vol. 416
  • DOI: 10.1086/173251

The Swift Ultra-Violet/Optical Telescope
journal, October 2005

  • Roming, Peter W. A.; Kennedy, Thomas E.; Mason, Keith O.
  • Space Science Reviews, Vol. 120, Issue 3-4
  • DOI: 10.1007/s11214-005-5095-4

SWIFT observations of TeV BL Lacertae objects
journal, February 2007


Two-Flow Model for Extragalactic Radio Jets
book, January 1989


ATOM - an Automatic Telescope for Optical Monitoring
journal, October 2004

  • Hauser, M.; Möllenhoff, C.; Pühlhofer, G.
  • Astronomische Nachrichten, Vol. 325, Issue 6-8
  • DOI: 10.1002/asna.200410305

Fermi Gamma-Ray Imaging of a Radio Galaxy
journal, April 2010


Modelling the spectral response of the Swift -XRT CCD camera: experience learnt from in-flight calibration
journal, November 2008


THE SECOND CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THE FERMI LARGE AREA TELESCOPE
journal, December 2011


The multifrequency variability of Mrk 421
journal, October 2003


Design concepts for the Cherenkov Telescope Array CTA: an advanced facility for ground-based high-energy gamma-ray astronomy
journal, November 2011


X-RAY SPECTRAL CURVATURE OF HIGH-FREQUENCY-PEAKED BL LAC OBJECTS: A PREDICTOR FOR THE TeV FLUX
journal, September 2011


The Likelihood Analysis of EGRET Data
journal, April 1996

  • Mattox, J. R.; Bertsch, D. L.; Chiang, J.
  • The Astrophysical Journal, Vol. 461
  • DOI: 10.1086/177068

Temporal and spectral gamma-ray properties of Mkn 421 above 250 GeV from CAT observations between 1996 and 2000
journal, August 2001


The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
text, January 2010


The USNO-B Catalog
journal, February 2003

  • Monet, David G.; Levine, Stephen E.; Canzian, Blaise
  • The Astronomical Journal, Vol. 125, Issue 2
  • DOI: 10.1086/345888

A high performance likelihood reconstruction of γ-rays for imaging atmospheric Cherenkov telescopes
journal, December 2009


The RGB Sample of Intermediate BL Lacertae Objects
journal, November 1999

  • Laurent‐Muehleisen, S. A.; Kollgaard, R. I.; Feigelson, E. D.
  • The Astrophysical Journal, Vol. 525, Issue 1
  • DOI: 10.1086/307881

Predicted Extragalactic T[CLC]e[/CLC]V Gamma-Ray Sources
journal, December 1996

  • Stecker, F. W.; de Jager, O. C.; Salamon, M. H.
  • The Astrophysical Journal, Vol. 473, Issue 2
  • DOI: 10.1086/310407

Polarization microvariability of BL Lacertae objects
journal, September 2005


The Spectral Energy Distribution of Fermi bright blazars
text, January 2009


A new analysis strategy for detection of faint γ-ray sources with Imaging Atmospheric Cherenkov Telescopes
journal, July 2011


THE LARGE AREA TELESCOPE ON THE FERMI GAMMA-RAY SPACE TELESCOPE MISSION
journal, May 2009


The Swift X-ray Telescope
text, January 2005


2MASS observation of BL Lac objects II
journal, December 2011


Two-flow model for extragalactic radio jets
journal, March 1989

  • Sol, H.; Pelletier, G.; Asseo, E.
  • Monthly Notices of the Royal Astronomical Society, Vol. 237, Issue 2
  • DOI: 10.1093/mnras/237.2.411

The Swift Ultra-Violet/Optical Telescope
text, January 2005


X-ray spectral evolution of TeV BL Lacertae objects: eleven years of observations with BeppoSAX , XMM-Newton and Swift  satellites
journal, December 2007


The synchrotron-self-Compton process in spherical geometries. I - Theoretical framework
journal, November 1985

  • Band, D. L.; Grindlay, J. E.
  • The Astrophysical Journal, Vol. 298
  • DOI: 10.1086/163593

Selection and 3D-reconstruction of gamma-ray-induced air showers with a stereoscopic system of atmospheric Cherenkov telescopes
journal, April 2006


The Galaxy Evolution Explorer : A Space Ultraviolet Survey Mission
journal, January 2005

  • Martin, D. Christopher; Fanson, James; Schiminovich, David
  • The Astrophysical Journal, Vol. 619, Issue 1
  • DOI: 10.1086/426387

Detection of a particle shower at the Glashow resonance with IceCube
journal, March 2021


Emitting Electrons and Source Activity in Markarian 501
journal, June 2012


Unveiling the X-ray/TeV engine in Mkn 421
journal, November 2006


Identification of the Infrared Non-Thermal Emission in Blazars
journal, October 2011


The relation between optical extinction and hydrogen column density in the Galaxy: Av– NH relation in the Galaxy
journal, December 2009


The Wide-Field Infrared Survey Explorer (Wise): Mission Description and Initial On-Orbit Performance
journal, November 2010


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
  • DOI: 10.1088/0067-0049/203/1/4

Identification of the infrared non-thermal emission in Blazars
text, January 2012


Unified approach to the classical statistical analysis of small signals
journal, April 1998


Reaction rates and energy distributions for elementary processes in relativistic pair plasmas
journal, August 1990

  • Coppi, P. S.; Blandford, R. D.
  • Monthly Notices of the Royal Astronomical Society, Vol. 245, Issue 3
  • DOI: 10.1093/mnras/245.3.453

Works referencing / citing this record:

THE EXTRAGALACTIC BACKGROUND LIGHT, THE HUBBLE CONSTANT, AND ANOMALIES: CONCLUSIONS FROM 20 YEARS OF TeV GAMMA-RAY OBSERVATIONS
journal, October 2015


GeV-TeV γ $\gamma $ -ray energy spectral break of BL Lac objects
journal, August 2018


Very high energy outburst of Markarian 501 in May 2009
text, January 2016


Multi-TeV Flaring from High-energy Blazars: An Evidence of the Photohadronic Process
journal, October 2019

  • Sahu, Sarira; López Fortín, Carlos E.; Nagataki, Shigehiro
  • The Astrophysical Journal, Vol. 884, Issue 1
  • DOI: 10.3847/2041-8213/ab43c7

Multi-TeV flaring from high energy blazars: An evidence of the photohadronic process
text, January 2019


Are both BL Lacs and pulsar wind nebulae the astrophysical counterparts of IceCube neutrino events?
journal, July 2014

  • Padovani, P.; Resconi, E.
  • Monthly Notices of the Royal Astronomical Society, Vol. 443, Issue 1
  • DOI: 10.1093/mnras/stu1166

Very high energy outburst of Markarian 501 in May 2009
journal, October 2016