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Title: Discovery of VHE γ -rays from the blazar 1ES 1215+303 with the MAGIC telescopes and simultaneous multi-wavelength observations

Abstract

Here, we present the discovery of very high energy (VHE, E > 100 GeV) γ-ray emission from the BL Lac object 1ES 1215+303 by the MAGIC telescopes and simultaneous multi-wavelength data in a broad energy range from radio to γ-rays. We also study the VHE γ-ray emission from 1ES 1215+303 and its relation to the emissions in other wavelengths. Triggered by an optical outburst, MAGIC observed the source in 2011 January - February for 20.3 h. The target was monitored in the optical R-band by the KVA telescope that also performed optical polarization measurements. Furthermore, we triggered target of opportunity observations with the Swift satellite and obtained simultaneous and quasi-simultaneous data from the Fermi Large Area Telescope and from the Metsähovi radio telescope. We also present the analysis of older MAGIC data taken in 2010. The MAGIC observations of 1ES 1215+303 carried out in 2011 January - February resulted in the first detection of the source at VHE with a statistical significance of 9.4σ. Simultaneously, the source was observed in a high optical and X-ray state. In 2010 the source was observed in a lower state in optical, X-ray, and VHE, while the GeV γ-ray flux and the radio fluxmore » were comparable in 2010 and 2011. The spectral energy distribution obtained with the 2011 data can be modeled with a simple one zone SSC model, but it requires extreme values for the Doppler factor or the electron energy distribution.« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
Fermi LAT Collaboration
OSTI Identifier:
1356672
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Astronomy and Astrophysics
Additional Journal Information:
Journal Volume: 544; Journal ID: ISSN 0004-6361
Publisher:
EDP Sciences
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; BL Lacertae objects: individual: 1ES 1215+303; gamma-rays: galaxies

Citation Formats

Aleksić, J., Alvarez, E. A., Antonelli, L. A., Antoranz, P., Ansoldi, S., Asensio, M., Backes, M., Barres de Almeida, U., Barrio, J. A., Bastieri, D., Becerra González, J., Bednarek, W., Berger, K., Bernardini, E., Biland, A., Blanch, O., Bock, R. K., Boller, A., Bonnoli, G., Borla Tridon, D., Bretz, T., Cañellas, A., Carmona, E., Carosi, A., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Cossio, L., Covino, S., Da Vela, P., Dazzi, F., De Angelis, A., De Caneva, G., De Cea del Pozo, E., De Lotto, B., Delgado Mendez, C., Diago Ortega, A., Doert, M., Domínguez, A., Dominis Prester, D., Dorner, D., Doro, M., Eisenacher, D., Elsaesser, D., Ferenc, D., Fonseca, M. V., Font, L., Fruck, C., García López, R. J., Garczarczyk, M., Garrido Terrats, D., Gaug, M., Giavitto, G., Godinović, N., González Muñoz, A., Gozzini, S. R., Hadasch, D., Häfner, D., Herrero, A., Hildebrand, D., Hose, J., Hrupec, D., Huber, B., Jankowski, F., Jogler, T., Kadenius, V., Kellermann, H., Klepser, S., Krähenbühl, T., Krause, J., La Barbera, A., Lelas, D., Leonardo, E., Lewandowska, N., Lindfors, E., Lombardi, S., López, M., López-Coto, R., López-Oramas, A., Lorenz, E., Makariev, M., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Meucci, M., Miranda, J. M., Mirzoyan, R., Moldón, J., Moralejo, A., Munar-Adrover, P., Niedzwiecki, A., Nieto, D., Nilsson, K., Nowak, N., Orito, R., Paiano, S., Paneque, D., Paoletti, R., Pardo, S., Paredes, J. M., Partini, S., Perez-Torres, M. A., Persic, M., Pilia, M., Pochon, J., Prada, F., Prada Moroni, P. G., Prandini, E., Puerto Gimenez, I., Puljak, I., Reichardt, I., Reinthal, R., Rhode, W., Ribó, M., Rico, J., Rügamer, S., Saggion, A., Saito, K., Saito, T. Y., Salvati, M., Satalecka, K., Scalzotto, V., Scapin, V., Schultz, C., Schweizer, T., Shore, S. N., Sillanpää, A., Sitarek, J., Snidaric, I., Sobczynska, D., Spanier, F., Spiro, S., Stamatescu, V., Stamerra, A., Steinke, B., Storz, J., Strah, N., Sun, S., Surić, T., Takalo, L., Takami, H., Tavecchio, F., Temnikov, P., Terzić, T., Tescaro, D., Teshima, M., Tibolla, O., Torres, D. F., Treves, A., Uellenbeck, M., Vogler, P., Wagner, R. M., Weitzel, Q., Zabalza, V., Zandanel, F., Zanin, R., Berdyugin, A., Buson, S., Järvelä, E., Larsson, S., Lähteenmäki, A., and Tammi, J. Discovery of VHE γ -rays from the blazar 1ES 1215+303 with the MAGIC telescopes and simultaneous multi-wavelength observations. United States: N. p., 2012. Web. doi:10.1051/0004-6361/201219133.
Aleksić, J., Alvarez, E. A., Antonelli, L. A., Antoranz, P., Ansoldi, S., Asensio, M., Backes, M., Barres de Almeida, U., Barrio, J. A., Bastieri, D., Becerra González, J., Bednarek, W., Berger, K., Bernardini, E., Biland, A., Blanch, O., Bock, R. K., Boller, A., Bonnoli, G., Borla Tridon, D., Bretz, T., Cañellas, A., Carmona, E., Carosi, A., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Cossio, L., Covino, S., Da Vela, P., Dazzi, F., De Angelis, A., De Caneva, G., De Cea del Pozo, E., De Lotto, B., Delgado Mendez, C., Diago Ortega, A., Doert, M., Domínguez, A., Dominis Prester, D., Dorner, D., Doro, M., Eisenacher, D., Elsaesser, D., Ferenc, D., Fonseca, M. V., Font, L., Fruck, C., García López, R. J., Garczarczyk, M., Garrido Terrats, D., Gaug, M., Giavitto, G., Godinović, N., González Muñoz, A., Gozzini, S. R., Hadasch, D., Häfner, D., Herrero, A., Hildebrand, D., Hose, J., Hrupec, D., Huber, B., Jankowski, F., Jogler, T., Kadenius, V., Kellermann, H., Klepser, S., Krähenbühl, T., Krause, J., La Barbera, A., Lelas, D., Leonardo, E., Lewandowska, N., Lindfors, E., Lombardi, S., López, M., López-Coto, R., López-Oramas, A., Lorenz, E., Makariev, M., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Meucci, M., Miranda, J. M., Mirzoyan, R., Moldón, J., Moralejo, A., Munar-Adrover, P., Niedzwiecki, A., Nieto, D., Nilsson, K., Nowak, N., Orito, R., Paiano, S., Paneque, D., Paoletti, R., Pardo, S., Paredes, J. M., Partini, S., Perez-Torres, M. A., Persic, M., Pilia, M., Pochon, J., Prada, F., Prada Moroni, P. G., Prandini, E., Puerto Gimenez, I., Puljak, I., Reichardt, I., Reinthal, R., Rhode, W., Ribó, M., Rico, J., Rügamer, S., Saggion, A., Saito, K., Saito, T. Y., Salvati, M., Satalecka, K., Scalzotto, V., Scapin, V., Schultz, C., Schweizer, T., Shore, S. N., Sillanpää, A., Sitarek, J., Snidaric, I., Sobczynska, D., Spanier, F., Spiro, S., Stamatescu, V., Stamerra, A., Steinke, B., Storz, J., Strah, N., Sun, S., Surić, T., Takalo, L., Takami, H., Tavecchio, F., Temnikov, P., Terzić, T., Tescaro, D., Teshima, M., Tibolla, O., Torres, D. F., Treves, A., Uellenbeck, M., Vogler, P., Wagner, R. M., Weitzel, Q., Zabalza, V., Zandanel, F., Zanin, R., Berdyugin, A., Buson, S., Järvelä, E., Larsson, S., Lähteenmäki, A., & Tammi, J. Discovery of VHE γ -rays from the blazar 1ES 1215+303 with the MAGIC telescopes and simultaneous multi-wavelength observations. United States. doi:10.1051/0004-6361/201219133.
Aleksić, J., Alvarez, E. A., Antonelli, L. A., Antoranz, P., Ansoldi, S., Asensio, M., Backes, M., Barres de Almeida, U., Barrio, J. A., Bastieri, D., Becerra González, J., Bednarek, W., Berger, K., Bernardini, E., Biland, A., Blanch, O., Bock, R. K., Boller, A., Bonnoli, G., Borla Tridon, D., Bretz, T., Cañellas, A., Carmona, E., Carosi, A., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Cossio, L., Covino, S., Da Vela, P., Dazzi, F., De Angelis, A., De Caneva, G., De Cea del Pozo, E., De Lotto, B., Delgado Mendez, C., Diago Ortega, A., Doert, M., Domínguez, A., Dominis Prester, D., Dorner, D., Doro, M., Eisenacher, D., Elsaesser, D., Ferenc, D., Fonseca, M. V., Font, L., Fruck, C., García López, R. J., Garczarczyk, M., Garrido Terrats, D., Gaug, M., Giavitto, G., Godinović, N., González Muñoz, A., Gozzini, S. R., Hadasch, D., Häfner, D., Herrero, A., Hildebrand, D., Hose, J., Hrupec, D., Huber, B., Jankowski, F., Jogler, T., Kadenius, V., Kellermann, H., Klepser, S., Krähenbühl, T., Krause, J., La Barbera, A., Lelas, D., Leonardo, E., Lewandowska, N., Lindfors, E., Lombardi, S., López, M., López-Coto, R., López-Oramas, A., Lorenz, E., Makariev, M., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Meucci, M., Miranda, J. M., Mirzoyan, R., Moldón, J., Moralejo, A., Munar-Adrover, P., Niedzwiecki, A., Nieto, D., Nilsson, K., Nowak, N., Orito, R., Paiano, S., Paneque, D., Paoletti, R., Pardo, S., Paredes, J. M., Partini, S., Perez-Torres, M. A., Persic, M., Pilia, M., Pochon, J., Prada, F., Prada Moroni, P. G., Prandini, E., Puerto Gimenez, I., Puljak, I., Reichardt, I., Reinthal, R., Rhode, W., Ribó, M., Rico, J., Rügamer, S., Saggion, A., Saito, K., Saito, T. Y., Salvati, M., Satalecka, K., Scalzotto, V., Scapin, V., Schultz, C., Schweizer, T., Shore, S. N., Sillanpää, A., Sitarek, J., Snidaric, I., Sobczynska, D., Spanier, F., Spiro, S., Stamatescu, V., Stamerra, A., Steinke, B., Storz, J., Strah, N., Sun, S., Surić, T., Takalo, L., Takami, H., Tavecchio, F., Temnikov, P., Terzić, T., Tescaro, D., Teshima, M., Tibolla, O., Torres, D. F., Treves, A., Uellenbeck, M., Vogler, P., Wagner, R. M., Weitzel, Q., Zabalza, V., Zandanel, F., Zanin, R., Berdyugin, A., Buson, S., Järvelä, E., Larsson, S., Lähteenmäki, A., and Tammi, J. Wed . "Discovery of VHE γ -rays from the blazar 1ES 1215+303 with the MAGIC telescopes and simultaneous multi-wavelength observations". United States. doi:10.1051/0004-6361/201219133. https://www.osti.gov/servlets/purl/1356672.
@article{osti_1356672,
title = {Discovery of VHE γ -rays from the blazar 1ES 1215+303 with the MAGIC telescopes and simultaneous multi-wavelength observations},
author = {Aleksić, J. and Alvarez, E. A. and Antonelli, L. A. and Antoranz, P. and Ansoldi, S. and Asensio, M. and Backes, M. and Barres de Almeida, U. and Barrio, J. A. and Bastieri, D. and Becerra González, J. and Bednarek, W. and Berger, K. and Bernardini, E. and Biland, A. and Blanch, O. and Bock, R. K. and Boller, A. and Bonnoli, G. and Borla Tridon, D. and Bretz, T. and Cañellas, A. and Carmona, E. and Carosi, A. and Colin, P. and Colombo, E. and Contreras, J. L. and Cortina, J. and Cossio, L. and Covino, S. and Da Vela, P. and Dazzi, F. and De Angelis, A. and De Caneva, G. and De Cea del Pozo, E. and De Lotto, B. and Delgado Mendez, C. and Diago Ortega, A. and Doert, M. and Domínguez, A. and Dominis Prester, D. and Dorner, D. and Doro, M. and Eisenacher, D. and Elsaesser, D. and Ferenc, D. and Fonseca, M. V. and Font, L. and Fruck, C. and García López, R. J. and Garczarczyk, M. and Garrido Terrats, D. and Gaug, M. and Giavitto, G. and Godinović, N. and González Muñoz, A. and Gozzini, S. R. and Hadasch, D. and Häfner, D. and Herrero, A. and Hildebrand, D. and Hose, J. and Hrupec, D. and Huber, B. and Jankowski, F. and Jogler, T. and Kadenius, V. and Kellermann, H. and Klepser, S. and Krähenbühl, T. and Krause, J. and La Barbera, A. and Lelas, D. and Leonardo, E. and Lewandowska, N. and Lindfors, E. and Lombardi, S. and López, M. and López-Coto, R. and López-Oramas, A. and Lorenz, E. and Makariev, M. and Maneva, G. and Mankuzhiyil, N. and Mannheim, K. and Maraschi, L. and Mariotti, M. and Martínez, M. and Mazin, D. and Meucci, M. and Miranda, J. M. and Mirzoyan, R. and Moldón, J. and Moralejo, A. and Munar-Adrover, P. and Niedzwiecki, A. and Nieto, D. and Nilsson, K. and Nowak, N. and Orito, R. and Paiano, S. and Paneque, D. and Paoletti, R. and Pardo, S. and Paredes, J. M. and Partini, S. and Perez-Torres, M. A. and Persic, M. and Pilia, M. and Pochon, J. and Prada, F. and Prada Moroni, P. G. and Prandini, E. and Puerto Gimenez, I. and Puljak, I. and Reichardt, I. and Reinthal, R. and Rhode, W. and Ribó, M. and Rico, J. and Rügamer, S. and Saggion, A. and Saito, K. and Saito, T. Y. and Salvati, M. and Satalecka, K. and Scalzotto, V. and Scapin, V. and Schultz, C. and Schweizer, T. and Shore, S. N. and Sillanpää, A. and Sitarek, J. and Snidaric, I. and Sobczynska, D. and Spanier, F. and Spiro, S. and Stamatescu, V. and Stamerra, A. and Steinke, B. and Storz, J. and Strah, N. and Sun, S. and Surić, T. and Takalo, L. and Takami, H. and Tavecchio, F. and Temnikov, P. and Terzić, T. and Tescaro, D. and Teshima, M. and Tibolla, O. and Torres, D. F. and Treves, A. and Uellenbeck, M. and Vogler, P. and Wagner, R. M. and Weitzel, Q. and Zabalza, V. and Zandanel, F. and Zanin, R. and Berdyugin, A. and Buson, S. and Järvelä, E. and Larsson, S. and Lähteenmäki, A. and Tammi, J.},
abstractNote = {Here, we present the discovery of very high energy (VHE, E > 100 GeV) γ-ray emission from the BL Lac object 1ES 1215+303 by the MAGIC telescopes and simultaneous multi-wavelength data in a broad energy range from radio to γ-rays. We also study the VHE γ-ray emission from 1ES 1215+303 and its relation to the emissions in other wavelengths. Triggered by an optical outburst, MAGIC observed the source in 2011 January - February for 20.3 h. The target was monitored in the optical R-band by the KVA telescope that also performed optical polarization measurements. Furthermore, we triggered target of opportunity observations with the Swift satellite and obtained simultaneous and quasi-simultaneous data from the Fermi Large Area Telescope and from the Metsähovi radio telescope. We also present the analysis of older MAGIC data taken in 2010. The MAGIC observations of 1ES 1215+303 carried out in 2011 January - February resulted in the first detection of the source at VHE with a statistical significance of 9.4σ. Simultaneously, the source was observed in a high optical and X-ray state. In 2010 the source was observed in a lower state in optical, X-ray, and VHE, while the GeV γ-ray flux and the radio flux were comparable in 2010 and 2011. The spectral energy distribution obtained with the 2011 data can be modeled with a simple one zone SSC model, but it requires extreme values for the Doppler factor or the electron energy distribution.},
doi = {10.1051/0004-6361/201219133},
journal = {Astronomy and Astrophysics},
issn = {0004-6361},
number = ,
volume = 544,
place = {United States},
year = {2012},
month = {8}
}

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  • Tavecchio, F.; Ghisellini, G.; Ghirlanda, G.
  • Monthly Notices of the Royal Astronomical Society: Letters, Vol. 399, Issue 1
  • DOI: 10.1111/j.1745-3933.2009.00724.x

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

1ES 0229+200: an extreme blazar with a very high minimum Lorentz factor
journal, October 2011


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


GAMMA-RAY LIGHT CURVES AND VARIABILITY OF BRIGHT FERMI -DETECTED BLAZARS
journal, September 2010


Discovery of Very High Energy Gamma Rays from 1ES 1218+30.4
journal, April 2006

  • Albert, J.; Aliu, E.; Anderhub, H.
  • The Astrophysical Journal, Vol. 642, Issue 2
  • DOI: 10.1086/504845

Extragalactic background light inferred from AEGIS galaxy-SED-type fractions: EBL from AEGIS galaxy-SED-type fractions
journal, October 2010


Constraints on the Very High Energy Emission from BL Lacertae Objects
journal, March 2004

  • Horan, D.; Badran, H. M.; Bond, I. H.
  • The Astrophysical Journal, Vol. 603, Issue 1
  • DOI: 10.1086/381430

A lower-limit flux for the extragalactic background light
journal, June 2010


Analysis methods for results in gamma-ray astronomy
journal, September 1983

  • Li, T. -P.; Ma, Y. -Q.
  • The Astrophysical Journal, Vol. 272
  • DOI: 10.1086/161295

Host galaxy subtraction of TeV candidate BL Lacertae objects
journal, September 2007


The Swift Gamma‐Ray Burst Mission
journal, August 2004

  • Gehrels, N.; Chincarini, G.; Giommi, P.
  • The Astrophysical Journal, Vol. 611, Issue 2
  • DOI: 10.1086/422091

Discovery of very high Energy γ-Rays from the Blazar s5 0716+714
journal, October 2009


Spine–sheath layer radiative interplay in subparsec-scale jets and the TeV emission from M87
journal, March 2008


Fifteen years monitoring of extragalactic radio sources at 22, 37 and 87 GHz
journal, November 1998

  • Teräsranta, H.; Tornikoski, M.; Mujunen, A.
  • Astronomy and Astrophysics Supplement Series, Vol. 132, Issue 3
  • DOI: 10.1051/aas:1998297

TeV candidate BL Lac objects
journal, March 2002


Simultaneous Planck , Swift , and Fermi observations of X-ray and γ -ray selected blazars
journal, May 2012


Discovery of Very High Energy γ-Rays from 1ES 1011+496 at z = 0.212
journal, September 2007

  • Albert, J.; Aliu, E.; Anderhub, H.
  • The Astrophysical Journal, Vol. 667, Issue 1
  • DOI: 10.1086/521982

The Jet‐Disk Connection and Blazar Unification
journal, August 2003

  • Maraschi, Laura; Tavecchio, Fabrizio
  • The Astrophysical Journal, Vol. 593, Issue 2
  • DOI: 10.1086/342118

MAGIC Observations and multiwavelength properties of the quasar 3C 279 in 2007 and 2009
journal, April 2011


Performance of the MAGIC stereo system obtained with Crab Nebula data
journal, February 2012


Modelling the variability of 1ES1218+30.4
journal, June 2010


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


Photopolarimetric Monitoring of Blazars in the Optical and Near-Infrared Bands with the Kanata Telescope. I. Correlations between Flux, Color, and Polarization
journal, June 2011

  • Ikejiri, Yuki; Uemura, Makoto; Sasada, Mahito
  • Publications of the Astronomical Society of Japan, Vol. 63, Issue 3
  • DOI: 10.1093/pasj/63.3.327

    Works referencing / citing this record:

    Empirical multi-wavelength prediction method for very high energy gamma-ray emitting BL Lacertae objects
    journal, December 2017


    Long-term optical monitoring of TeV emitting blazars: I. Data analysis⋆
    journal, December 2018


    Empirical multi-wavelength prediction method for very high energy gamma-ray emitting BL Lacertae objects
    journal, December 2017


    Long-term optical monitoring of TeV emitting blazars: I. Data analysis⋆
    journal, December 2018


    FIRST-EPOCH VLBA IMAGING OF 20 NEW TeV BLAZARS
    journal, November 2014