MAGIC detection of short-term variability of the high-peaked BL Lac object 1ES 0806+524
Abstract
The high-frequency-peaked BL Lac (HBL) 1ES 0806+524 (z = 0.138) was discovered in very high energy (VHE) γ-rays in 2008. Until now, the broad-band spectrum of 1ES 0806+524 has been only poorly characterized, in particular at high energies. In this paper, we analysed multiwavelength observations from γ-rays to radio performed from 2011 January to March, which were triggered by the high activity detected at optical frequencies. These observations constitute the most precise determination of the broad-band emission of 1ES 0806+524 to date. The stereoscopic Major Atmospheric Gamma-Ray Imaging Cherenkov (MAGIC) observations yielded a γ-ray signal above 250 GeV of (3.7 ± 0.7) per cent of the Crab Nebula flux with a statistical significance of 9.9σ. The multiwavelength observations showed significant variability in essentially all energy bands, including a VHE γ-ray flare that lasted less than one night, which provided unprecedented evidence for short-term variability in 1ES 0806+524. The spectrum of this flare is well described by a power law with a photon index of 2.97 ± 0.29 between ~150 GeV and 1 TeV and an integral flux of (9.3 ± 1.9) per cent of the Crab nebula flux above 250 GeV. The spectrum during the non-flaring VHE activity is compatiblemore »
- Authors:
- more »
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE
- Contributing Org.:
- Fermi-LAT Collaboration; MAGIC Collaboration
- OSTI Identifier:
- 1356435
- Grant/Contract Number:
- AC02-76SF00515
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Monthly Notices of the Royal Astronomical Society
- Additional Journal Information:
- Journal Volume: 451; Journal Issue: 1; 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 0806+524; galaxies: jets; gamma rays: galaxies
Citation Formats
Aleksi , J., Ansoldi, S., Antonelli, L. A., Antoranz, P., Babic, A., Bangale, P., Barrio, J. A., Becerra Gonzalez, J., Bednarek, W., Bernardini, E., Biasuzzi, B., Biland, A., Blanch, O., Bonnefoy, S., Bonnoli, G., Borracci, F., Bretz, T., Carmona, E., Carosi, A., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., Da Vela, P., Dazzi, F., De Angelis, A., De Caneva, G., De Lotto, B., de Ona Wilhelmi, E., Delgado Mendez, C., Di Pierro, F., Dominis Prester, D., Dorner, D., Doro, M., Einecke, S., Eisenacher, D., Elsaesser, D., Fernandez-Barral, A., Fidalgo, D., Fonseca, M. V., Font, L., Frantzen, K., Fruck, C., Galindo, D., Garcia Lopez, R. J., Garczarczyk, M., Garrido Terrats, D., Gaug, M., Godinovi , N., Gonzalez Munoz, A., Gozzini, S. R., Hadasch, D., Hanabata, Y., Hayashida, M., Herrera, J., Hose, J., Hrupec, D., Idec, W., Kadenius, V., Kellermann, H., Knoetig, M. L., Kodani, K., Konno, Y., Krause, J., Kubo, H., Kushida, J., La Barbera, A., Lelas, D., Lewandowska, N., Lindfors, E., Lombardi, S., Longo, F., Lopez, M., Lopez-Coto, R., Lopez-Oramas, A., Lorenz, E., Lozano, I., Makariev, M., Mallot, K., Maneva, G., Mannheim, K., Maraschi, L., Marcote, B., Mariotti, M., Martinez, M., Mazin, D., Menzel, U., Miranda, J. M., Mirzoyan, R., Moralejo, A., Munar-Adrover, P., Nakajima, D., Neustroev, V., Niedzwiecki, A., Nievas Rosillo, M., Nilsson, K., Nishijima, K., Noda, K., Orito, R., Overkemping, A., Paiano, S., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Paredes-Fortuny, X., Persic, M., Poutanen, J., Prada Moroni, P. G., Prandini, E., Puljak, I., Reinthal, R., Rhode, W., Ribo, M., Rico, J., Rodriguez Garcia, J., Saito, T., Saito, K., Satalecka, K., Scalzotto, V., Scapin, V., Schultz, C., Schweizer, T., Shore, S. N., Sillanpaa, A., Sitarek, J., Snidaric, I., Sobczynska, D., Stamerra, A., Steinbring, T., Strzys, M., Takalo, L., Takami, H., Tavecchio, F., Temnikov, P., Terzi , T., Tescaro, D., Teshima, M., Thaele, J., Torres, D. F., Toyama, T., Treves, A., Vogler, P., Will, M., Zanin, R., Berger, K., Buson, S., D'Ammando, F., Gasparrini, D., Hovatta, T., Max-Moerbeck, W., Readhead, A., and Richards, J. MAGIC detection of short-term variability of the high-peaked BL Lac object 1ES 0806+524. United States: N. p., 2015.
Web. doi:10.1093/mnras/stv895.
Aleksi , J., Ansoldi, S., Antonelli, L. A., Antoranz, P., Babic, A., Bangale, P., Barrio, J. A., Becerra Gonzalez, J., Bednarek, W., Bernardini, E., Biasuzzi, B., Biland, A., Blanch, O., Bonnefoy, S., Bonnoli, G., Borracci, F., Bretz, T., Carmona, E., Carosi, A., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., Da Vela, P., Dazzi, F., De Angelis, A., De Caneva, G., De Lotto, B., de Ona Wilhelmi, E., Delgado Mendez, C., Di Pierro, F., Dominis Prester, D., Dorner, D., Doro, M., Einecke, S., Eisenacher, D., Elsaesser, D., Fernandez-Barral, A., Fidalgo, D., Fonseca, M. V., Font, L., Frantzen, K., Fruck, C., Galindo, D., Garcia Lopez, R. J., Garczarczyk, M., Garrido Terrats, D., Gaug, M., Godinovi , N., Gonzalez Munoz, A., Gozzini, S. R., Hadasch, D., Hanabata, Y., Hayashida, M., Herrera, J., Hose, J., Hrupec, D., Idec, W., Kadenius, V., Kellermann, H., Knoetig, M. L., Kodani, K., Konno, Y., Krause, J., Kubo, H., Kushida, J., La Barbera, A., Lelas, D., Lewandowska, N., Lindfors, E., Lombardi, S., Longo, F., Lopez, M., Lopez-Coto, R., Lopez-Oramas, A., Lorenz, E., Lozano, I., Makariev, M., Mallot, K., Maneva, G., Mannheim, K., Maraschi, L., Marcote, B., Mariotti, M., Martinez, M., Mazin, D., Menzel, U., Miranda, J. M., Mirzoyan, R., Moralejo, A., Munar-Adrover, P., Nakajima, D., Neustroev, V., Niedzwiecki, A., Nievas Rosillo, M., Nilsson, K., Nishijima, K., Noda, K., Orito, R., Overkemping, A., Paiano, S., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Paredes-Fortuny, X., Persic, M., Poutanen, J., Prada Moroni, P. G., Prandini, E., Puljak, I., Reinthal, R., Rhode, W., Ribo, M., Rico, J., Rodriguez Garcia, J., Saito, T., Saito, K., Satalecka, K., Scalzotto, V., Scapin, V., Schultz, C., Schweizer, T., Shore, S. N., Sillanpaa, A., Sitarek, J., Snidaric, I., Sobczynska, D., Stamerra, A., Steinbring, T., Strzys, M., Takalo, L., Takami, H., Tavecchio, F., Temnikov, P., Terzi , T., Tescaro, D., Teshima, M., Thaele, J., Torres, D. F., Toyama, T., Treves, A., Vogler, P., Will, M., Zanin, R., Berger, K., Buson, S., D'Ammando, F., Gasparrini, D., Hovatta, T., Max-Moerbeck, W., Readhead, A., & Richards, J. MAGIC detection of short-term variability of the high-peaked BL Lac object 1ES 0806+524. United States. https://doi.org/10.1093/mnras/stv895
Aleksi , J., Ansoldi, S., Antonelli, L. A., Antoranz, P., Babic, A., Bangale, P., Barrio, J. A., Becerra Gonzalez, J., Bednarek, W., Bernardini, E., Biasuzzi, B., Biland, A., Blanch, O., Bonnefoy, S., Bonnoli, G., Borracci, F., Bretz, T., Carmona, E., Carosi, A., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., Da Vela, P., Dazzi, F., De Angelis, A., De Caneva, G., De Lotto, B., de Ona Wilhelmi, E., Delgado Mendez, C., Di Pierro, F., Dominis Prester, D., Dorner, D., Doro, M., Einecke, S., Eisenacher, D., Elsaesser, D., Fernandez-Barral, A., Fidalgo, D., Fonseca, M. V., Font, L., Frantzen, K., Fruck, C., Galindo, D., Garcia Lopez, R. J., Garczarczyk, M., Garrido Terrats, D., Gaug, M., Godinovi , N., Gonzalez Munoz, A., Gozzini, S. R., Hadasch, D., Hanabata, Y., Hayashida, M., Herrera, J., Hose, J., Hrupec, D., Idec, W., Kadenius, V., Kellermann, H., Knoetig, M. L., Kodani, K., Konno, Y., Krause, J., Kubo, H., Kushida, J., La Barbera, A., Lelas, D., Lewandowska, N., Lindfors, E., Lombardi, S., Longo, F., Lopez, M., Lopez-Coto, R., Lopez-Oramas, A., Lorenz, E., Lozano, I., Makariev, M., Mallot, K., Maneva, G., Mannheim, K., Maraschi, L., Marcote, B., Mariotti, M., Martinez, M., Mazin, D., Menzel, U., Miranda, J. M., Mirzoyan, R., Moralejo, A., Munar-Adrover, P., Nakajima, D., Neustroev, V., Niedzwiecki, A., Nievas Rosillo, M., Nilsson, K., Nishijima, K., Noda, K., Orito, R., Overkemping, A., Paiano, S., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Paredes-Fortuny, X., Persic, M., Poutanen, J., Prada Moroni, P. G., Prandini, E., Puljak, I., Reinthal, R., Rhode, W., Ribo, M., Rico, J., Rodriguez Garcia, J., Saito, T., Saito, K., Satalecka, K., Scalzotto, V., Scapin, V., Schultz, C., Schweizer, T., Shore, S. N., Sillanpaa, A., Sitarek, J., Snidaric, I., Sobczynska, D., Stamerra, A., Steinbring, T., Strzys, M., Takalo, L., Takami, H., Tavecchio, F., Temnikov, P., Terzi , T., Tescaro, D., Teshima, M., Thaele, J., Torres, D. F., Toyama, T., Treves, A., Vogler, P., Will, M., Zanin, R., Berger, K., Buson, S., D'Ammando, F., Gasparrini, D., Hovatta, T., Max-Moerbeck, W., Readhead, A., and Richards, J. 2015.
"MAGIC detection of short-term variability of the high-peaked BL Lac object 1ES 0806+524". United States. https://doi.org/10.1093/mnras/stv895. https://www.osti.gov/servlets/purl/1356435.
@article{osti_1356435,
title = {MAGIC detection of short-term variability of the high-peaked BL Lac object 1ES 0806+524},
author = {Aleksi , J. and Ansoldi, S. and Antonelli, L. A. and Antoranz, P. and Babic, A. and Bangale, P. and Barrio, J. A. and Becerra Gonzalez, J. and Bednarek, W. and Bernardini, E. and Biasuzzi, B. and Biland, A. and Blanch, O. and Bonnefoy, S. and Bonnoli, G. and Borracci, F. and Bretz, T. and Carmona, E. and Carosi, A. and Colin, P. and Colombo, E. and Contreras, J. L. and Cortina, J. and Covino, S. and Da Vela, P. and Dazzi, F. and De Angelis, A. and De Caneva, G. and De Lotto, B. and de Ona Wilhelmi, E. and Delgado Mendez, C. and Di Pierro, F. and Dominis Prester, D. and Dorner, D. and Doro, M. and Einecke, S. and Eisenacher, D. and Elsaesser, D. and Fernandez-Barral, A. and Fidalgo, D. and Fonseca, M. V. and Font, L. and Frantzen, K. and Fruck, C. and Galindo, D. and Garcia Lopez, R. J. and Garczarczyk, M. and Garrido Terrats, D. and Gaug, M. and Godinovi , N. and Gonzalez Munoz, A. and Gozzini, S. R. and Hadasch, D. and Hanabata, Y. and Hayashida, M. and Herrera, J. and Hose, J. and Hrupec, D. and Idec, W. and Kadenius, V. and Kellermann, H. and Knoetig, M. L. and Kodani, K. and Konno, Y. and Krause, J. and Kubo, H. and Kushida, J. and La Barbera, A. and Lelas, D. and Lewandowska, N. and Lindfors, E. and Lombardi, S. and Longo, F. and Lopez, M. and Lopez-Coto, R. and Lopez-Oramas, A. and Lorenz, E. and Lozano, I. and Makariev, M. and Mallot, K. and Maneva, G. and Mannheim, K. and Maraschi, L. and Marcote, B. and Mariotti, M. and Martinez, M. and Mazin, D. and Menzel, U. and Miranda, J. M. and Mirzoyan, R. and Moralejo, A. and Munar-Adrover, P. and Nakajima, D. and Neustroev, V. and Niedzwiecki, A. and Nievas Rosillo, M. and Nilsson, K. and Nishijima, K. and Noda, K. and Orito, R. and Overkemping, A. and Paiano, S. and Palatiello, M. and Paneque, D. and Paoletti, R. and Paredes, J. M. and Paredes-Fortuny, X. and Persic, M. and Poutanen, J. and Prada Moroni, P. G. and Prandini, E. and Puljak, I. and Reinthal, R. and Rhode, W. and Ribo, M. and Rico, J. and Rodriguez Garcia, J. and Saito, T. and Saito, K. and Satalecka, K. and Scalzotto, V. and Scapin, V. and Schultz, C. and Schweizer, T. and Shore, S. N. and Sillanpaa, A. and Sitarek, J. and Snidaric, I. and Sobczynska, D. and Stamerra, A. and Steinbring, T. and Strzys, M. and Takalo, L. and Takami, H. and Tavecchio, F. and Temnikov, P. and Terzi , T. and Tescaro, D. and Teshima, M. and Thaele, J. and Torres, D. F. and Toyama, T. and Treves, A. and Vogler, P. and Will, M. and Zanin, R. and Berger, K. and Buson, S. and D'Ammando, F. and Gasparrini, D. and Hovatta, T. and Max-Moerbeck, W. and Readhead, A. and Richards, J.},
abstractNote = {The high-frequency-peaked BL Lac (HBL) 1ES 0806+524 (z = 0.138) was discovered in very high energy (VHE) γ-rays in 2008. Until now, the broad-band spectrum of 1ES 0806+524 has been only poorly characterized, in particular at high energies. In this paper, we analysed multiwavelength observations from γ-rays to radio performed from 2011 January to March, which were triggered by the high activity detected at optical frequencies. These observations constitute the most precise determination of the broad-band emission of 1ES 0806+524 to date. The stereoscopic Major Atmospheric Gamma-Ray Imaging Cherenkov (MAGIC) observations yielded a γ-ray signal above 250 GeV of (3.7 ± 0.7) per cent of the Crab Nebula flux with a statistical significance of 9.9σ. The multiwavelength observations showed significant variability in essentially all energy bands, including a VHE γ-ray flare that lasted less than one night, which provided unprecedented evidence for short-term variability in 1ES 0806+524. The spectrum of this flare is well described by a power law with a photon index of 2.97 ± 0.29 between ~150 GeV and 1 TeV and an integral flux of (9.3 ± 1.9) per cent of the Crab nebula flux above 250 GeV. The spectrum during the non-flaring VHE activity is compatible with the only available VHE observation performed in 2008 with VERITAS when the source was in a low optical state. Lastly, the broad-band spectral energy distribution can be described with a one-zone synchrotron self-Compton model with parameters typical for HBLs, indicating that 1ES 0806+524 is not substantially different from the HBLs previously detected.},
doi = {10.1093/mnras/stv895},
url = {https://www.osti.gov/biblio/1356435},
journal = {Monthly Notices of the Royal Astronomical Society},
issn = {0035-8711},
number = 1,
volume = 451,
place = {United States},
year = {Fri May 29 00:00:00 EDT 2015},
month = {Fri May 29 00:00:00 EDT 2015}
}
Web of Science
Figures / Tables:
Works referenced in this record:
Gamma-Ray Excess from a Stacked Sample of High- and Intermediate-Frequency Peaked Blazars Observed with the Magic Telescope
journal, February 2011
- Aleksić, J.; Antonelli, L. A.; Antoranz, P.
- The Astrophysical Journal, Vol. 729, Issue 2
Semi-analytic modelling of the extragalactic background light and consequences for extragalactic gamma-ray spectra: Modelling of the EBL and gamma-ray spectra
journal, April 2012
- Gilmore, Rudy C.; Somerville, Rachel S.; Primack, Joel R.
- Monthly Notices of the Royal Astronomical Society, Vol. 422, Issue 4
Discovery of Very High Energy γ-Rays from Markarian 180 Triggered by an Optical Outburst
journal, August 2006
- Albert, J.; Aliu, E.; Anderhub, H.
- The Astrophysical Journal, Vol. 648, Issue 2
Observations of 54 Active Galactic Nuclei with the HEGRA system of Cherenkov telescopes
journal, June 2004
- Aharonian, F.; Akhperjanian, A.; Beilicke, M.
- Astronomy & Astrophysics, Vol. 421, Issue 2
χ 2 AND POISSONIAN DATA: BIASES EVEN IN THE HIGH-COUNT REGIME AND HOW TO AVOID THEM
journal, March 2009
- Humphrey, Philip J.; Liu, Wenhao; Buote, David A.
- The Astrophysical Journal, Vol. 693, Issue 1
The Swift X-Ray Telescope
journal, October 2005
- Burrows, David N.; Hill, J. E.; Nousek, J. A.
- Space Science Reviews, Vol. 120, Issue 3-4
The 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
Decelerating Flows in TeV Blazars: A Resolution to the BL Lacertae-FR I Unification Problem
journal, August 2003
- Georganopoulos, Markos; Kazanas, Demosthenes
- The Astrophysical Journal, Vol. 594, Issue 1
Structured jets in TeV BL Lac objects and radiogalaxies: Implications for the observed properties
journal, March 2005
- Ghisellini, G.; Tavecchio, F.; Chiaberge, M.
- Astronomy & Astrophysics, Vol. 432, Issue 2
The connection between x-ray- and radio-selected BL Lacertae objects
journal, May 1995
- Padovani, Paolo; Giommi, Paolo
- The Astrophysical Journal, Vol. 444
Maps of Dust Infrared Emission for Use in Estimation of Reddening and Cosmic Microwave Background Radiation Foregrounds
journal, June 1998
- Schlegel, David J.; Finkbeiner, Douglas P.; Davis, Marc
- The Astrophysical Journal, Vol. 500, Issue 2
The power of blazar jets: The power of blazar jets
journal, February 2008
- Celotti, Annalisa; Ghisellini, Gabriele
- Monthly Notices of the Royal Astronomical Society, Vol. 385, Issue 1
Comparisons of the emission-line and continuum properties of broad absorption line and normal quasi-stellar objects
journal, May 1991
- Weymann, Ray J.; Morris, Simon L.; Foltz, Craig B.
- The Astrophysical Journal, Vol. 373
Implementation of the Random Forest method for the Imaging Atmospheric Cherenkov Telescope MAGIC
journal, April 2008
- Albert, J.; Aliu, E.; Anderhub, H.
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 588, Issue 3
Discovery of very high Energy Gamma-Ray Radiation from the bl lac 1es 0806+524
journal, December 2008
- Acciari, V.; Aliu, E.; Arlen, T.
- The Astrophysical Journal, Vol. 690, Issue 2
Very-High-Energy Gamma Rays from a Distant Quasar: How Transparent Is the Universe?
journal, June 2008
- Albert, J.; Aliu, E.; Anderhub, H.
- Science, Vol. 320, Issue 5884
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
The Likelihood Analysis of EGRET Data
journal, April 1996
- Mattox, J. R.; Bertsch, D. L.; Chiang, J.
- The Astrophysical Journal, Vol. 461
PRECISE ABSOLUTE ASTROMETRY FROM THE VLBA IMAGING AND POLARIMETRY SURVEY AT 5 GHz
journal, August 2011
- Petrov, L.; Taylor, G. B.
- The Astronomical Journal, Vol. 142, Issue 3
An Exceptional Very High Energy Gamma-Ray Flare of PKS 2155-304
journal, July 2007
- Aharonian, F.; Akhperjanian, A. G.; Bazer-Bachi, A. R.
- The Astrophysical Journal, Vol. 664, Issue 2
X‐Ray Spectral Variability Signatures of Flares in BL Lacertae Objects
journal, December 2002
- Bottcher, Markus; Chiang, James
- The Astrophysical Journal, Vol. 581, Issue 1
Pg 1553+113: five Years of Observations with Magic
journal, March 2012
- Aleksić, J.; Alvarez, E. A.; Antonelli, L. A.
- The Astrophysical Journal, Vol. 748, Issue 1
VHE γ‐Ray Observation of the Crab Nebula and its Pulsar with the MAGIC Telescope
journal, February 2008
- Albert, J.; Aliu, E.; Anderhub, H.
- The Astrophysical Journal, Vol. 674, Issue 2
Discovery of VHE γ -ray emission from the BL Lacertae object B3 2247+381 with the MAGIC telescopes
journal, March 2012
- Aleksić, J.; Alvarez, E. A.; Antonelli, L. A.
- Astronomy & Astrophysics, Vol. 539
TeV BL Lac objects at the dawn of the Fermi era
journal, January 2010
- Tavecchio, F.; Ghisellini, G.; Ghirlanda, G.
- Monthly Notices of the Royal Astronomical Society, Vol. 401, Issue 3
Extragalactic optical-infrared background radiation, its time evolution and the cosmic photon-photon opacity
journal, June 2008
- Franceschini, A.; Rodighiero, G.; Vaccari, M.
- Astronomy & Astrophysics, Vol. 487, Issue 3
Infrared to X-ray observations of PKS 2155–304 in a low state
journal, May 2008
- Foschini, L.; Treves, A.; Tavecchio, F.
- Astronomy & Astrophysics, Vol. 484, Issue 3
Modeling the Extragalactic Background Light from Stars and dust
journal, February 2010
- Finke, Justin D.; Razzaque, Soebur; Dermer, Charles D.
- The Astrophysical Journal, Vol. 712, Issue 1
New methods of atmospheric Cherenkov imaging for gamma-ray astronomy. I. The false source method
journal, May 1994
- Fomin, V. P.; Stepanian, A. A.; Lamb, R. C.
- Astroparticle Physics, Vol. 2, Issue 2
A limit of the anisotropy of the microwave background radiation on arc minute scales
journal, November 1989
- Readhead, A. C. S.; Lawrence, C. R.; Myers, S. T.
- The Astrophysical Journal, Vol. 346
UBVRI photometry. II - The Cousins VRI system, its temperature and absolute flux calibration, and relevance for two-dimensional photometry
journal, October 1979
- Bessell, M. S.
- Publications of the Astronomical Society of the Pacific, Vol. 91
THE LARGE AREA TELESCOPE ON THE FERMI GAMMA-RAY SPACE TELESCOPE MISSION
journal, May 2009
- Atwood, W. B.; Abdo, A. A.; Ackermann, M.
- The Astrophysical Journal, Vol. 697, Issue 2
Correcting for the Effects of Interstellar Extinction
journal, January 1999
- Fitzpatrick, Edward L.
- Publications of the Astronomical Society of the Pacific, Vol. 111, Issue 755
The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with
improved stray-radiation corrections
journal, September 2005
- Kalberla, P. M. W.; Burton, W. B.; Hartmann, Dap
- Astronomy & Astrophysics, Vol. 440, Issue 2
The Burst Alert Telescope (BAT) on the SWIFT Midex Mission
journal, October 2005
- Barthelmy, Scott D.; Barbier, Louis M.; Cummings, Jay R.
- Space Science Reviews, Vol. 120, Issue 3-4
Search for High‐Energy Gamma Rays from an X‐Ray–selected Blazar Sample
journal, December 2003
- de la Calle Perez, I.; Bond, I. H.; Boyle, P. J.
- The Astrophysical Journal, Vol. 599, Issue 2
Extremely rapid bursts of TeV photons from the active galaxy Markarian 421
journal, September 1996
- Gaidos, J. A.; Akerlof, C. W.; Biller, S.
- Nature, Vol. 383, Issue 6598
SIMULTANEOUS OBSERVATIONS OF PKS 2155–304 WITH HESS, FERMI , RXTE , AND ATOM: SPECTRAL ENERGY DISTRIBUTIONS AND VARIABILITY IN A LOW STATE
journal, April 2009
- Aharonian, F.; Akhperjanian, A. G.; Anton, G.
- The Astrophysical Journal, Vol. 696, Issue 2
Simultaneous Multiwavelength Observations of the Blazar 1ES 1959+650 at a Low TeV Flux
journal, June 2008
- Tagliaferri, G.; Foschini, L.; Ghisellini, G.
- The Astrophysical Journal, Vol. 679, Issue 2
Constraints on the Physical Parameters of TeV Blazars
journal, December 1998
- Tavecchio, Fabrizio; Maraschi, Laura; Ghisellini, Gabriele
- The Astrophysical Journal, Vol. 509, Issue 2
The TeV blazar Markarian 421 at the highest spatial resolution
journal, November 2013
- Blasi, M. G.; Lico, R.; Giroletti, M.
- Astronomy & Astrophysics, Vol. 559
Photometric calibration of the Swift ultraviolet/optical telescope: Photometric calibration of the Swift UVOT
journal, December 2007
- Poole, T. S.; Breeveld, A. A.; Page, M. J.
- Monthly Notices of the Royal Astronomical Society, Vol. 383, Issue 2
A 'Twin-Exhaust' Model for Double Radio Sources
journal, December 1974
- Blandford, R. D.; Rees, M. J.
- Monthly Notices of the Royal Astronomical Society, Vol. 169, Issue 3
Extragalactic background light inferred from AEGIS galaxy-SED-type fractions: EBL from AEGIS galaxy-SED-type fractions
journal, October 2010
- Domínguez, A.; Primack, J. R.; Rosario, D. J.
- Monthly Notices of the Royal Astronomical Society, Vol. 410, Issue 4
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
General physical properties of bright Fermi blazars: Properties of bright Fermi blazars
journal, November 2009
- Ghisellini, G.; Tavecchio, F.; Foschini, L.
- Monthly Notices of the Royal Astronomical Society, Vol. 402, Issue 1
Improving the performance of the single-dish Cherenkov telescope MAGIC through the use of signal timing
journal, January 2009
- Aliu, E.; Anderhub, H.; Antonelli, L. A.
- Astroparticle Physics, Vol. 30, Issue 6
X-Ray/UV/Optical Follow-up of the Blazar PKS 2155-304 after the Giant TeV Flares of 2006 July
journal, February 2007
- Foschini, L.; Ghisellini, G.; Tavecchio, F.
- The Astrophysical Journal, Vol. 657, Issue 2
Analysis methods for results in gamma-ray astronomy
journal, September 1983
- Li, T. -P.; Ma, Y. -Q.
- The Astrophysical Journal, Vol. 272
Search for an extended VHE γ -ray emission from Mrk 421 and Mrk 501 with the MAGIC Telescope
journal, November 2010
- Aleksić, J.; Antonelli, L. A.; Antoranz, P.
- Astronomy & Astrophysics, Vol. 524
Host galaxy subtraction of TeV candidate BL Lacertae objects
journal, September 2007
- Nilsson, K.; Pasanen, M.; Takalo, L. O.
- Astronomy & Astrophysics, Vol. 475, Issue 1
Systematic Search for VHE Gamma‐Ray Emission from X‐Ray–bright High‐Frequency BL Lac Objects
journal, July 2008
- Albert, J.; Aliu, E.; Anderhub, H.
- The Astrophysical Journal, Vol. 681, Issue 2
The Swift Gamma‐Ray Burst Mission
journal, August 2004
- Gehrels, N.; Chincarini, G.; Giommi, P.
- The Astrophysical Journal, Vol. 611, Issue 2
Discovery of very high Energy γ-Rays from the Blazar s5 0716+714
journal, October 2009
- Anderhub, H.; Antonelli, L. A.; Antoranz, P.
- The Astrophysical Journal, Vol. 704, Issue 2
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
TeV candidate BL Lac objects
journal, March 2002
- Costamante, L.; Ghisellini, G.
- Astronomy & Astrophysics, Vol. 384, Issue 1
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
The Jet‐Disk Connection and Blazar Unification
journal, August 2003
- Maraschi, Laura; Tavecchio, Fabrizio
- The Astrophysical Journal, Vol. 593, Issue 2
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
Variable Very High Energy γ‐Ray Emission from Markarian 501
journal, November 2007
- Albert, J.; Aliu, E.; Anderhub, H.
- The Astrophysical Journal, Vol. 669, Issue 2
Ten new BL Lacertae objects discovered by an efficient X-ray/radio/optical technique
journal, July 1993
- Schachter, Jonathan F.; Stocke, John T.; Perlman, Eric
- The Astrophysical Journal, Vol. 412
Performance of the MAGIC stereo system obtained with Crab Nebula data
journal, February 2012
- Aleksić, J.; Alvarez, E. A.; Antonelli, L. A.
- Astroparticle Physics, Vol. 35, Issue 7
BLAZARS IN THE FERMI ERA: THE OVRO 40 m TELESCOPE MONITORING PROGRAM
journal, May 2011
- Richards, Joseph L.; Max-Moerbeck, Walter; Pavlidou, Vasiliki
- The Astrophysical Journal Supplement Series, Vol. 194, Issue 2
Discovery of VHE γ -rays from the blazar 1ES 1215+303 with the MAGIC telescopes and simultaneous multi-wavelength observations
journal, August 2012
- Aleksić, J.; Alvarez, E. A.; Antonelli, L. A.
- Astronomy & Astrophysics, Vol. 544
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
VRI Photometry of Stars in the Fields of 16 Blazars
journal, February 1998
- Fiorucci, Massimo; Tosti, Gino; Rizzi, Nicola
- Publications of the Astronomical Society of the Pacific, Vol. 110, Issue 744
The burst Alert Telescope (BAT) on the Swift MIDEX mission
conference, February 2004
- Barthelmy, Scott D.
- Optical Science and Technology, SPIE's 48th Annual Meeting, SPIE Proceedings
Gamma-ray Excess from a Stacked Sample of High- and Intermediate-frequency Peaked Blazars Observed with the MAGIC Telescope
text, January 2011
- Aleksic, J.; Antonelli, L. -A.; Antoranz, P.
- Institute of Physics
VHE Gamma-Ray Observation of the Crab Nebula and its Pulsar with the MAGIC telescope
text, January 2007
- Collaboration, Magic; Albert, J.
- arXiv
Systematic search for VHE gamma-ray emission from X-ray bright high-frequency BL Lac objects
text, January 2007
- Meyer, M.
- arXiv
Host galaxy subtraction of TeV candidate BL Lacertae objects
text, January 2007
- Nilsson, K.; Pasanen, M.; Takalo, L. O.
- arXiv
Implementation of the Random Forest Method for the Imaging Atmospheric Cherenkov Telescope MAGIC
text, January 2007
- Albert, J.
- arXiv
Simultaneous multiwavelength observations of the blazar 1ES1959+650 at a low TeV flux
text, January 2008
- Tagliaferri, G.; Foschini, L.; Ghisellini, G.
- arXiv
Infrared to X-ray observations of PKS 2155-304 in a low state
text, January 2008
- Foschini, L.; Treves, A.; Tavecchio, F.
- arXiv
The extragalactic optical-infrared background radiations, their time evolution and the cosmic photon-photon opacity
text, January 2008
- Franceschini, Alberto; Rodighiero, Giulia; Vaccari, Mattia
- arXiv
Very-High-Energy Gamma Rays from a Distant Quasar: How Transparent Is the Universe?
text, January 2008
- Collaboration, Magic; Albert, J.
- arXiv
Improving the performance of the single-dish Cherenkov telescope MAGIC through the use of signal timing
text, January 2008
- Collaboration, Magic
- arXiv
Simultaneous observations of PKS 2155-304 with H.E.S.S., Fermi, RXTE and ATOM: spectral energy distributions and variability in a low state
text, January 2009
- S., H. E. S.; collaborations, Fermi-LAT
- arXiv
Discovery of Very High Energy gamma-rays from the blazar S5 0716+714
text, January 2009
- Anderhub, H.
- arXiv
TeV BL Lac objects at the dawn of the Fermi era
text, January 2009
- Tavecchio, F.; Ghisellini, G.; Ghirlanda, G.
- arXiv
Gamma-ray excess from a stacked sample of high- and intermediate-frequency peaked blazars observed with the MAGIC telescope
text, January 2010
- Collaboration, Magic; Aleksić, J.; Antonelli, L. A.
- arXiv
Blazars in the Fermi Era: The OVRO 40-m Telescope Monitoring Program
text, January 2010
- Richards, Joseph L.; Max-Moerbeck, Walter; Pavlidou, Vasiliki
- arXiv
PG 1553+113: five years of observations with MAGIC
text, January 2011
- Collaboration, Magic; Aleksić, J.; Alvarez, E. A.
- arXiv
Precise absolute astrometry from the VLBA imaging and polarimetry survey at 5 GHz
text, January 2011
- Petrov, Leonid; Taylor, Gregory
- arXiv
Performance of the MAGIC stereo system obtained with Crab Nebula data
text, January 2011
- Collaboration, Magic; Aleksić, J.; Alvarez, E. A.
- arXiv
Discovery of VHE gamma-rays from the blazar 1ES 1215+303 with the MAGIC Telescopes and simultaneous multi-wavelength observations
text, January 2012
- Collaboration, Magic; Aleksić, J.; Alvarez, E. A.
- arXiv
X-Ray Spectral Variability Signatures of Flares in BL Lac Objects
text, January 2002
- Boettcher, M.; Chiang, J.
- arXiv
Decelerating Flows in TeV Blazars: A Resolution to the BL Lac -- FR I Unification Problem
text, January 2003
- Georganopoulos, Markos; Kazanas, Demosthenes
- arXiv
Observations of 54 Active Galactic Nuclei with the HEGRA System of Cherenkov Telescopes
text, January 2004
- Collaboration, The HEGRA; Aharonian, F.; Akhperjanian, A.
- arXiv
The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections
text, January 2005
- Kalberla, P. M. W.; Burton, W. B.; Hartmann, Dap
- arXiv
The Burst Alert Telescope (BAT) on the Swift MIDEX Mission
text, January 2005
- Barthelmy, S. D.; Barbier, L. M.; Cummings, J. R.
- arXiv
The Swift Ultra-Violet/Optical Telescope
text, January 2005
- Roming, P. W. A.; Kennedy, T. E.; Mason, K. O.
- arXiv
X-ray/UV/Optical follow-up of the blazar PKS 2155-304 after the giant TeV flares of July 2006
text, January 2007
- Foschini, L.; Ghisellini, G.; Tavecchio, F.
- arXiv
Constraints on the Physical Parameters of TeV Blazars
text, January 1998
- Tavecchio, F.; Maraschi, L.; Ghisellini, G.
- arXiv
Correcting for the Effects of Interstellar Extinction
text, January 1998
- Fitzpatrick, Edward L.
- arXiv
Works referencing / citing this record:
Insights into the emission of the blazar 1ES 1011+496 through unprecedented broadband observations during 2011 and 2012
journal, June 2016
- Aleksić, J.; Ansoldi, S.; Antonelli, L. A.
- Astronomy & Astrophysics, Vol. 591
Optical polarization of high-energy BL Lacertae objects
journal, December 2016
- Hovatta, T.; Lindfors, E.; Blinov, D.
- Astronomy & Astrophysics, Vol. 596
Empirical multi-wavelength prediction method for very high energy gamma-ray emitting BL Lacertae objects
journal, December 2017
- Fallah Ramazani, V.; Lindfors, E.; Nilsson, K.
- Astronomy & Astrophysics, Vol. 608
Long-term optical monitoring of TeV emitting blazars: I. Data analysis⋆
journal, December 2018
- Nilsson, K.; Lindfors, E.; Takalo, L. O.
- Astronomy & Astrophysics, Vol. 620
Investigating the peculiar emission from the new VHE gamma-ray source H1722+119
journal, March 2016
- Ahnen, M. L.; Ansoldi, S.; Antonelli, L. A.
- Monthly Notices of the Royal Astronomical Society, Vol. 459, Issue 3
Optical Variability Modeling of Newly Identified Blazar Candidates behind Magellanic Clouds
journal, January 2020
- Żywucka, Natalia; Tarnopolski, Mariusz; Böttcher, Markus
- The Astrophysical Journal, Vol. 888, Issue 2
On the Jet Properties of γ -Ray-loud Active Galactic Nuclei
journal, April 2018
- Chen, Liang
- The Astrophysical Journal Supplement Series, Vol. 235, Issue 2
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
Insights into the emission of the blazar 1ES 1011+496 through unprecedented broadband observations during 2011 and 2012
text, January 2016
- Aleksić, J.; Ansoldi, S.; Antonelli, L. A.
- Deutsches Elektronen-Synchrotron, DESY, Hamburg
Investigating the peculiar emission from the new VHE gamma-ray source H1722+119
text, January 2016
- Ahnen, M. L.; Ansoldi, S.; Antonelli, L. A.
- Deutsches Elektronen-Synchrotron, DESY, Hamburg
Investigating the peculiar emission from the new VHE gamma-ray source H1722+119
text, January 2016
- Collaboration, Magic; Ahnen, M. L.; Ansoldi, S.
- arXiv
Optical polarization of high-energy BL Lac objects
text, January 2016
- Hovatta, T.; Lindfors, E.; Blinov, D.
- arXiv
Multi-TeV flaring from high energy blazars: An evidence of the photohadronic process
text, January 2019
- Sahu, Sarira; Fortin, Carlos E. Lopez; Nagataki, Shigehiro
- arXiv
Optical variability modeling of newly identified blazar candidates behind Magellanic Clouds
text, January 2019
- Żywucka, Natalia; Tarnopolski, Mariusz; Böttcher, Markus
- arXiv