% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Acharyya:585373,
      author       = {Acharyya, A. and Adams, C. B. and Archer, A. and Bangale,
                      P. and Benbow, W. and Brill, A. and Christiansen, J. L. and
                      Chromey, A. J. and Errando, M. and Falcone, A. and Feng, Q.
                      and Finley, J. P. and Foote, G. M. and Fortson, L. and
                      Furniss, A. and Gallagher, G. and Hanlon, W. and Hanna, D.
                      and Hervet, O. and Hinrichs, C. E. and Hoang, J. and Holder,
                      J. and Jin, W. and Johnson, M. N. and Kaaret, P. and
                      Kertzman, M. and Kieda, D. and Kleiner, T. K. and Korzoun,
                      N. and Krennrich, F. and Lang, M. J. and Lundy, M. and
                      Maier, G. and McGrath, C. E. and Millard, M. J. and Millis,
                      J. and Mooney, C. L. and Moriarty, P. and Mukherjee, R. and
                      O'Brien, S. and Ong, R. A. and Pohl, M. and Pueschel, E. and
                      Quinn, J. and Ragan, K. and Reynolds, P. T. and Ribeiro, D.
                      and Roache, E. and Sadeh, I. and Sadun, A. C. and Saha, L.
                      and Santander, M. and Sembroski, G. H. and Shang, R. and
                      Splettstoesser, M. and Talluri, A. Kaushik and Tucci, J. V.
                      and Vassiliev, V. V. and Williams, D. A. and Wong, S. L. and
                      Hovatta, Talvikki and Jorstad, Svetlana G. and Kiehlmann,
                      Sebastian and Lähteenmäki, Anne and Liodakis, Ioannis and
                      Marscher, Alan P. and Max-Moerbeck, Walter and Readhead,
                      Anthony C. S. and Reeves, Rodrigo and Smith, Paul S. and
                      Tornikoski, Merja},
      collaboration = {{VERITAS Collaboration}},
      title        = {{VERITAS} discovery of very high energy gamma-ray emission
                      from {S}3 1227+25 and multiwavelength observations},
      reportid     = {PUBDB-2023-03521, arXiv:2305.02860},
      year         = {2023},
      note         = {18 pages, 6 figures. Accepted for publication in the
                      Astrophysical Journal (ApJ)},
      abstract     = {We report the detection of very high energy gamma-ray
                      emission from the blazar S3 1227+25 (VER J1230+253) with the
                      Very Energetic Radiation Imaging Telescope Array System
                      (VERITAS). VERITAS observations of the source were triggered
                      by the detection of a hard-spectrum GeV flare on May 15,
                      2015 with the Fermi-Large Area Telescope (LAT). A combined
                      five-hour VERITAS exposure on May 16th and May 18th resulted
                      in a strong 13$\sigma$ detection with a differential photon
                      spectral index, $\Gamma$ = 3.8 $\pm$ 0.4, and a flux level
                      at 9\% of the Crab Nebula above 120 GeV. This also triggered
                      target of opportunity observations with Swift, optical
                      photometry, polarimetry and radio measurements, also
                      presented in this work, in addition to the VERITAS and
                      Fermi-LAT data. A temporal analysis of the gamma-ray flux
                      during this period finds evidence of a shortest variability
                      timescale of $\tau_{obs}$ = 6.2 $\pm$ 0.9 hours, indicating
                      emission from compact regions within the jet, and the
                      combined gamma-ray spectrum shows no strong evidence of a
                      spectral cut-off. An investigation into correlations between
                      the multiwavelength observations found evidence of optical
                      and gamma-ray correlations, suggesting a single-zone model
                      of emission. Finally, the multiwavelength spectral energy
                      distribution is well described by a simple one-zone leptonic
                      synchrotron self-Compton radiation model.},
      keywords     = {gamma ray: VHE (INSPIRE) / gamma ray: emission (INSPIRE) /
                      gamma ray: flux (INSPIRE) / emission: model (INSPIRE) /
                      detector: imaging (INSPIRE) / polarization: monitoring
                      (INSPIRE) / VERITAS (INSPIRE) / GeV (INSPIRE) / optical
                      (INSPIRE) / correlation (INSPIRE) / spectral (INSPIRE) /
                      variability (INSPIRE) / power spectrum (INSPIRE) / blazar
                      (INSPIRE) / photon (INSPIRE) / spectral energy distribution
                      (INSPIRE) / GLAST (INSPIRE) / synchrotron (INSPIRE)},
      cin          = {$Z_CTA$ / $Z_VER$},
      cid          = {$I:(DE-H253)Z_CTA-20210408$ / $I:(DE-H253)Z_VER-20210408$},
      pnm          = {613 - Matter and Radiation from the Universe (POF4-613)},
      pid          = {G:(DE-HGF)POF4-613},
      experiment   = {EXP:(DE-H253)CTA-20150101 / EXP:(DE-H253)VERITAS-20170101},
      typ          = {PUB:(DE-HGF)25},
      eprint       = {2305.02860},
      howpublished = {arXiv:2305.02860},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2305.02860;\%\%$},
      doi          = {10.3204/PUBDB-2023-03521},
      url          = {https://bib-pubdb1.desy.de/record/585373},
}