skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Magic discovery of very high energy emission from the FSRQ PKS 1222+21

Abstract

Very high energy (VHE) γ-ray emission from the flat spectrum radio quasar (FSRQ) PKS 1222+21 (4C 21.35, z = 0.432) was detected with the MAGIC Cherenkov telescopes during a short observation (~0.5 hr) performed on 2010 June 17. The MAGIC detection coincides with high-energy MeV/GeV γ-ray activity measured by the Large Area Telescope (LAT) on board the Fermi satellite. The VHE spectrum measured by MAGIC extends from about 70 GeV up to at least 400 GeV and can be well described by a power-law dN/dE ∝ E –Γ with a photon index Γ = 3.75 ± 0.27stat ± 0.2syst. The averaged integral flux above 100 GeV is (4.6 ± 0.5) × 10–10 cm–2 s–1 (~1 Crab Nebula flux). The VHE flux measured by MAGIC varies significantly within the 30 minute exposure implying a flux doubling time of about 10 minutes. The VHE and MeV/GeV spectra, corrected for the absorption by the extragalactic background light (EBL), can be described by a single power law with photon index 2.72 ± 0.34 between 3 GeV and 400 GeV, and is consistent with emission belonging to a single component in the jet. The absence of a spectral cutoff constrains the γ-ray emission region tomore » lie outside the broad-line region, which would otherwise absorb the VHE γ-rays. Together with the detected fast variability, this challenges present emission models from jets in FSRQs. Furthermore, the combined Fermi/LAT and MAGIC spectral data yield constraints on the density of the EBL in the UV-optical to near-infrared range that are compatible with recent models.« less

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
MAGIC Collaboration
OSTI Identifier:
1357264
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Astrophysical Journal Letters
Additional Journal Information:
Journal Volume: 730; Journal Issue: 1; Journal ID: ISSN 2041-8205
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; cosmic background radiation; galaxies: active; galaxies: jets; gamma rays: galaxies; quasars: individual (PKS 1222+21)

Citation Formats

Aleksić, J., Antonelli, L. A., Antoranz, P., Backes, M., Barrio, J. A., Bastieri, D., Becerra González, J., Bednarek, W., Berdyugin, A., Berger, K., Bernardini, E., Biland, A., Blanch, O., Bock, R. K., Boller, A., Bonnoli, G., Borla Tridon, D., Braun, I., Bretz, T., Cañellas, A., Carmona, E., Carosi, A., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Cossio, L., Covino, S., Dazzi, F., De Angelis, A., 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., Elsaesser, D., Ferenc, D., Fonseca, M. V., Font, L., Fruck, C., García López, R. J., Garczarczyk, M., Garrido, D., Giavitto, G., Godinović, N., Hadasch, D., Häfner, D., Herrero, A., Hildebrand, D., Höhne-Mönch, D., Hose, J., Hrupec, D., Huber, B., Jogler, T., Klepser, S., Krähenbühl, T., Krause, J., La Barbera, A., Lelas, D., Leonardo, E., Lindfors, E., Lombardi, S., López, M., 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., Miyamoto, H., Moldón, J., Moralejo, A., Nieto, D., Nilsson, K., Orito, R., Oya, I., Paneque, D., Paoletti, R., Pardo, S., Paredes, J. M., Partini, S., Pasanen, M., Pauss, F., Perez-Torres, M. A., Persic, M., Peruzzo, L., Pilia, M., Pochon, J., Prada, F., Prada Moroni, P. G., Prandini, E., 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., Shayduk, M., Shore, S. N., Sillanpää, A., Sitarek, J., Sobczynska, D., Spanier, F., Spiro, S., Stamerra, A., Steinke, B., Storz, J., Strah, N., Surić, T., Takalo, L., Tavecchio, F., Temnikov, P., Terzić, T., Tescaro, D., Teshima, M., Thom, M., Tibolla, O., Torres, D. F., Treves, A., Vankov, H., Vogler, P., Wagner, R. M., Weitzel, Q., Zabalza, V., Zandanel, F., Zanin, R., Tanaka, Y. T., Wood, D. L., and Buson, S. Magic discovery of very high energy emission from the FSRQ PKS 1222+21. United States: N. p., 2011. Web. doi:10.1088/2041-8205/730/1/L8.
Aleksić, J., Antonelli, L. A., Antoranz, P., Backes, M., Barrio, J. A., Bastieri, D., Becerra González, J., Bednarek, W., Berdyugin, A., Berger, K., Bernardini, E., Biland, A., Blanch, O., Bock, R. K., Boller, A., Bonnoli, G., Borla Tridon, D., Braun, I., Bretz, T., Cañellas, A., Carmona, E., Carosi, A., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Cossio, L., Covino, S., Dazzi, F., De Angelis, A., 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., Elsaesser, D., Ferenc, D., Fonseca, M. V., Font, L., Fruck, C., García López, R. J., Garczarczyk, M., Garrido, D., Giavitto, G., Godinović, N., Hadasch, D., Häfner, D., Herrero, A., Hildebrand, D., Höhne-Mönch, D., Hose, J., Hrupec, D., Huber, B., Jogler, T., Klepser, S., Krähenbühl, T., Krause, J., La Barbera, A., Lelas, D., Leonardo, E., Lindfors, E., Lombardi, S., López, M., 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., Miyamoto, H., Moldón, J., Moralejo, A., Nieto, D., Nilsson, K., Orito, R., Oya, I., Paneque, D., Paoletti, R., Pardo, S., Paredes, J. M., Partini, S., Pasanen, M., Pauss, F., Perez-Torres, M. A., Persic, M., Peruzzo, L., Pilia, M., Pochon, J., Prada, F., Prada Moroni, P. G., Prandini, E., 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., Shayduk, M., Shore, S. N., Sillanpää, A., Sitarek, J., Sobczynska, D., Spanier, F., Spiro, S., Stamerra, A., Steinke, B., Storz, J., Strah, N., Surić, T., Takalo, L., Tavecchio, F., Temnikov, P., Terzić, T., Tescaro, D., Teshima, M., Thom, M., Tibolla, O., Torres, D. F., Treves, A., Vankov, H., Vogler, P., Wagner, R. M., Weitzel, Q., Zabalza, V., Zandanel, F., Zanin, R., Tanaka, Y. T., Wood, D. L., & Buson, S. Magic discovery of very high energy emission from the FSRQ PKS 1222+21. United States. doi:10.1088/2041-8205/730/1/L8.
Aleksić, J., Antonelli, L. A., Antoranz, P., Backes, M., Barrio, J. A., Bastieri, D., Becerra González, J., Bednarek, W., Berdyugin, A., Berger, K., Bernardini, E., Biland, A., Blanch, O., Bock, R. K., Boller, A., Bonnoli, G., Borla Tridon, D., Braun, I., Bretz, T., Cañellas, A., Carmona, E., Carosi, A., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Cossio, L., Covino, S., Dazzi, F., De Angelis, A., 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., Elsaesser, D., Ferenc, D., Fonseca, M. V., Font, L., Fruck, C., García López, R. J., Garczarczyk, M., Garrido, D., Giavitto, G., Godinović, N., Hadasch, D., Häfner, D., Herrero, A., Hildebrand, D., Höhne-Mönch, D., Hose, J., Hrupec, D., Huber, B., Jogler, T., Klepser, S., Krähenbühl, T., Krause, J., La Barbera, A., Lelas, D., Leonardo, E., Lindfors, E., Lombardi, S., López, M., 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., Miyamoto, H., Moldón, J., Moralejo, A., Nieto, D., Nilsson, K., Orito, R., Oya, I., Paneque, D., Paoletti, R., Pardo, S., Paredes, J. M., Partini, S., Pasanen, M., Pauss, F., Perez-Torres, M. A., Persic, M., Peruzzo, L., Pilia, M., Pochon, J., Prada, F., Prada Moroni, P. G., Prandini, E., 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., Shayduk, M., Shore, S. N., Sillanpää, A., Sitarek, J., Sobczynska, D., Spanier, F., Spiro, S., Stamerra, A., Steinke, B., Storz, J., Strah, N., Surić, T., Takalo, L., Tavecchio, F., Temnikov, P., Terzić, T., Tescaro, D., Teshima, M., Thom, M., Tibolla, O., Torres, D. F., Treves, A., Vankov, H., Vogler, P., Wagner, R. M., Weitzel, Q., Zabalza, V., Zandanel, F., Zanin, R., Tanaka, Y. T., Wood, D. L., and Buson, S. Fri . "Magic discovery of very high energy emission from the FSRQ PKS 1222+21". United States. doi:10.1088/2041-8205/730/1/L8. https://www.osti.gov/servlets/purl/1357264.
@article{osti_1357264,
title = {Magic discovery of very high energy emission from the FSRQ PKS 1222+21},
author = {Aleksić, J. and Antonelli, L. A. and Antoranz, P. and Backes, M. and Barrio, J. A. and Bastieri, D. and Becerra González, J. and Bednarek, W. and Berdyugin, A. 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 Braun, I. 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 Dazzi, F. and De Angelis, A. 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 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, D. and Giavitto, G. and Godinović, N. and Hadasch, D. and Häfner, D. and Herrero, A. and Hildebrand, D. and Höhne-Mönch, D. and Hose, J. and Hrupec, D. and Huber, B. and Jogler, T. and Klepser, S. and Krähenbühl, T. and Krause, J. and La Barbera, A. and Lelas, D. and Leonardo, E. and Lindfors, E. and Lombardi, S. and López, M. 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 Miyamoto, H. and Moldón, J. and Moralejo, A. and Nieto, D. and Nilsson, K. and Orito, R. and Oya, I. and Paneque, D. and Paoletti, R. and Pardo, S. and Paredes, J. M. and Partini, S. and Pasanen, M. and Pauss, F. and Perez-Torres, M. A. and Persic, M. and Peruzzo, L. and Pilia, M. and Pochon, J. and Prada, F. and Prada Moroni, P. G. and Prandini, E. 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 Shayduk, M. and Shore, S. N. and Sillanpää, A. and Sitarek, J. and Sobczynska, D. and Spanier, F. and Spiro, S. and Stamerra, A. and Steinke, B. and Storz, J. and Strah, N. and Surić, T. and Takalo, L. and Tavecchio, F. and Temnikov, P. and Terzić, T. and Tescaro, D. and Teshima, M. and Thom, M. and Tibolla, O. and Torres, D. F. and Treves, A. and Vankov, H. and Vogler, P. and Wagner, R. M. and Weitzel, Q. and Zabalza, V. and Zandanel, F. and Zanin, R. and Tanaka, Y. T. and Wood, D. L. and Buson, S.},
abstractNote = {Very high energy (VHE) γ-ray emission from the flat spectrum radio quasar (FSRQ) PKS 1222+21 (4C 21.35, z = 0.432) was detected with the MAGIC Cherenkov telescopes during a short observation (~0.5 hr) performed on 2010 June 17. The MAGIC detection coincides with high-energy MeV/GeV γ-ray activity measured by the Large Area Telescope (LAT) on board the Fermi satellite. The VHE spectrum measured by MAGIC extends from about 70 GeV up to at least 400 GeV and can be well described by a power-law dN/dE ∝ E –Γ with a photon index Γ = 3.75 ± 0.27stat ± 0.2syst. The averaged integral flux above 100 GeV is (4.6 ± 0.5) × 10–10 cm–2 s–1 (~1 Crab Nebula flux). The VHE flux measured by MAGIC varies significantly within the 30 minute exposure implying a flux doubling time of about 10 minutes. The VHE and MeV/GeV spectra, corrected for the absorption by the extragalactic background light (EBL), can be described by a single power law with photon index 2.72 ± 0.34 between 3 GeV and 400 GeV, and is consistent with emission belonging to a single component in the jet. The absence of a spectral cutoff constrains the γ-ray emission region to lie outside the broad-line region, which would otherwise absorb the VHE γ-rays. Together with the detected fast variability, this challenges present emission models from jets in FSRQs. Furthermore, the combined Fermi/LAT and MAGIC spectral data yield constraints on the density of the EBL in the UV-optical to near-infrared range that are compatible with recent models.},
doi = {10.1088/2041-8205/730/1/L8},
journal = {Astrophysical Journal Letters},
number = 1,
volume = 730,
place = {United States},
year = {2011},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 159 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

FERMI OBSERVATIONS OF TeV-SELECTED ACTIVE GALACTIC NUCLEI
journal, December 2009


FERMI LARGE AREA TELESCOPE CONSTRAINTS ON THE GAMMA-RAY OPACITY OF THE UNIVERSE
journal, October 2010


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

VHE γ -ray emission of PKS 2155–304: spectral and temporal variability
journal, September 2010


A low level of extragalactic background light as revealed by γ-rays from blazars
journal, April 2006

  • Aharonian, F.; Akhperjanian, A. G.; Bazer-Bachi, A. R.
  • Nature, Vol. 440, Issue 7087
  • DOI: 10.1038/nature04680

Unfolding of differential energy spectra in the MAGIC experiment
journal, December 2007

  • Albert, J.; Aliu, E.; Anderhub, H.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 583, Issue 2-3
  • DOI: 10.1016/j.nima.2007.09.048

Very-High-Energy Gamma Rays from a Distant Quasar: How Transparent Is the Universe?
journal, June 2008


Observations of the Blazar 3c 66a with the Magic Telescopes in Stereoscopic mode
journal, December 2010


Recollimation and Radiative Focusing of Relativistic Jets: Applications to Blazars and m87
journal, June 2009


Observations of the BL Lacertae Object 3C 66A with STACEE
journal, August 2005

  • Bramel, D. A.; Carson, J.; Covault, C. E.
  • The Astrophysical Journal, Vol. 629, Issue 1
  • DOI: 10.1086/431294

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


Gamma-ray-loud blazars and beaming
journal, April 1995

  • Dondi, Laura; Ghisellini, Gabriele
  • Monthly Notices of the Royal Astronomical Society, Vol. 273, Issue 3
  • DOI: 10.1093/mnras/273.3.583

Radiation fields of disk, BLR and torus in quasars and blazars: implications for γ-ray absorption
journal, January 2003


A Test of External Compton Models for Gamma‐Ray Active Galactic Nuclei
journal, July 2006

  • Fan, Zhonghui; Cao, Xinwu; Gu, Minfeng
  • The Astrophysical Journal, Vol. 646, Issue 1
  • DOI: 10.1086/504864

Constraints on the Extragalactic Background Light from very high Energy Gamma-Ray Observations of Blazars
journal, June 2009


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


Radiation Spectral Synthesis of Relativistic Filamentation
journal, September 2010

  • Frederiksen, Jacob Trier; Haugbølle, Troels; Medvedev, Mikhail V.
  • The Astrophysical Journal, Vol. 722, Issue 1
  • DOI: 10.1088/2041-8205/722/1/L114

A METHOD FOR SETTING UPPER LIMITS TO THE EXTRAGALACTIC BACKGROUND LIGHT WITH FERMI -LAT AND TeV OBSERVATIONS OF BLAZARS
journal, April 2010


Rapid variability in TeV blazars: the case of PKS 2155−304
journal, May 2008


Canonical high-power blazars
journal, August 2009


Fast TeV variability in blazars: jets in a jet
journal, May 2009

  • Giannios, Dimitrios; Uzdensky, Dmitri A.; Begelman, Mitchell C.
  • Monthly Notices of the Royal Astronomical Society: Letters, Vol. 395, Issue 1
  • DOI: 10.1111/j.1745-3933.2009.00635.x

GeV gamma-ray attenuation and the high-redshift UV background
journal, November 2009


The Cosmic Infrared Background: Measurements and Implications
journal, September 2001


Upper Limits on TeV Gamma-Ray Emission from Active Galactic Nuclei
journal, October 1995

  • Kerrick, A. D.; Akerlof, C. W.; Biller, S.
  • The Astrophysical Journal, Vol. 452
  • DOI: 10.1086/176331

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


Parameter estimation in X-ray astronomy
journal, August 1976

  • Lampton, M.; Margon, B.; Bowyer, S.
  • The Astrophysical Journal, Vol. 208
  • DOI: 10.1086/154592

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

Mojave: Monitoring of jets in Active Galactic Nuclei with vlba Experiments. vi. Kinematics Analysis of a Complete Sample of Blazar jets
journal, November 2009


Absorption of 10–200 GeV Gamma Rays by Radiation from Broad‐Line Regions in Blazars
journal, December 2006

  • Liu, H. T.; Bai, J. M.
  • The Astrophysical Journal, Vol. 653, Issue 2
  • DOI: 10.1086/509097

Relativistic jets and the continuum emission in QSOs
journal, January 1980

  • Marscher, A. P.
  • The Astrophysical Journal, Vol. 235
  • DOI: 10.1086/157642

A structure and energy dissipation efficiency of relativistic reconfinement shocks
journal, January 2009


Optical spectra of narrow emission line Palomar-Green galaxies
journal, December 1987

  • Osterbrock, Donald E.; Pogge, Richard W.
  • The Astrophysical Journal, Vol. 323
  • DOI: 10.1086/165810

GeV BREAKS IN BLAZARS AS A RESULT OF GAMMA-RAY ABSORPTION WITHIN THE BROAD-LINE REGION
journal, June 2010


The Redshift Dependence of Gamma‐Ray Absorption in the Environments of Strong‐Line AGNs
journal, August 2007

  • Reimer, A.
  • The Astrophysical Journal, Vol. 665, Issue 2
  • DOI: 10.1086/519766

3C 454.3 Reveals the Structure and Physics of Its “Blazar Zone”
journal, March 2008

  • Sikora, Marek; Moderski, RafaŁ; Madejski, Greg M.
  • The Astrophysical Journal, Vol. 675, Issue 1
  • DOI: 10.1086/526419

Modification of the gamma-ray spectra by internal absorption in optically violently variable blazars: the example cases of 3C 273 and 3C 279
journal, December 2008


Dynamics and high-energy emission of the flaring HST-1 knot in the M 87 jet
journal, August 2006


Constraining the location of the emitting region in Fermi blazars through rapid γ-ray variability: Rapid γ-ray variability in blazars
journal, April 2010

  • Tavecchio, F.; Ghisellini, G.; Bonnoli, G.
  • Monthly Notices of the Royal Astronomical Society: Letters, Vol. 405, Issue 1
  • DOI: 10.1111/j.1745-3933.2010.00867.x

Intrinsic absorption in 3C 279 at GeV-TeV energies and consequences for estimates of the extragalactic background light
journal, January 2009


    Works referencing / citing this record:

    Discovery of very high energy γ -ray emission from the BL Lacertae object PKS 0301−243 with H.E.S.S.
    journal, November 2013


    Energetic constraints on a rapid gamma-ray flare in PKS 1222+216: Energetics of a VHE flare in PKS 1222+216
    journal, August 2012

    • Nalewajko, Krzysztof; Begelman, Mitchell C.; Cerutti, Benoît
    • Monthly Notices of the Royal Astronomical Society, Vol. 425, Issue 4
    • DOI: 10.1111/j.1365-2966.2012.21721.x

    F-GAMMA: Multi-frequency radio monitoring of Fermi blazars : The 2.64 to 43 GHz Effelsberg light curves from 2007–2015⋆
    journal, June 2019


    The VHE γ-Ray View of the FSRQ PKS 1510-089
    journal, March 2019

    • Zacharias, Michael; Dominis Prester, Dijana; Jankowsky, Felix
    • Galaxies, Vol. 7, Issue 1
    • DOI: 10.3390/galaxies7010041

    Physics potential of the International Axion Observatory (IAXO)
    journal, June 2019


    A fast, very-high-energy γ -ray flare from BL Lacertae during a period of multi-wavelength activity in June 2015
    journal, March 2019


    Energetic and Broad Band Spectral Distribution of Emission from Astronomical Jets
    journal, July 2013


    Fast γ -Ray Variability in Blazars beyond Redshift 3
    journal, February 2018


    Energetic and Broad Band Spectral Distribution of Emission from Astronomical Jets
    journal, July 2013


    Limits on the extragalactic background light in the Fermi era
    journal, June 2012


    Discovery of very high energy γ -ray emission from the BL Lacertae object PKS 0301−243 with H.E.S.S.
    journal, November 2013


    A fast, very-high-energy γ -ray flare from BL Lacertae during a period of multi-wavelength activity in June 2015
    journal, March 2019


    F-GAMMA: Multi-frequency radio monitoring of Fermi blazars : The 2.64 to 43 GHz Effelsberg light curves from 2007–2015⋆
    journal, June 2019


    MHD simulations of three-dimensional resistive reconnection in a cylindrical plasma column
    journal, July 2016

    • Striani, E.; Mignone, A.; Vaidya, B.
    • Monthly Notices of the Royal Astronomical Society, Vol. 462, Issue 3
    • DOI: 10.1093/mnras/stw1848

    Energetic constraints on a rapid gamma-ray flare in PKS 1222+216: Energetics of a VHE flare in PKS 1222+216
    journal, August 2012

    • Nalewajko, Krzysztof; Begelman, Mitchell C.; Cerutti, Benoît
    • Monthly Notices of the Royal Astronomical Society, Vol. 425, Issue 4
    • DOI: 10.1111/j.1365-2966.2012.21721.x

    Physics potential of the International Axion Observatory (IAXO)
    text, January 2019


    The VHE γ-Ray View of the FSRQ PKS 1510-089
    journal, March 2019

    • Zacharias, Michael; Dominis Prester, Dijana; Jankowsky, Felix
    • Galaxies, Vol. 7, Issue 1
    • DOI: 10.3390/galaxies7010041

    Fast γ -Ray Variability in Blazars beyond Redshift 3
    journal, February 2018


    Study of the variable broadband emission of Markarian 501 during the most extreme Swift X-ray activity
    journal, May 2020