13-18 December 2015
International Conference Centre Geneva
Europe/Zurich timezone

Multi-wavelength observations on the gamma-ray periodic blazar PG1553+113

15 Dec 2015, 18:15
Level 0, Room 4 (International Conference Centre Geneva)

Level 0, Room 4

International Conference Centre Geneva


Gareth Hughes (ETH Zurich)


PG 1553+113 is a blazar with an uncertain redshift detected at very high energies (VHE; E > 100 GeV) both during high and quiescent flux states. The Fermi/LAT collaboration recently reported the detection of a ~2-year modulation of the integral flux emitted in both optical and high-energy (HE) gamma rays(Stamerra et al. at this conference). Interestingly, one of the physical scenarios that can account for such variability pattern is the presence of a supermassive black hole binary in the nucleus of PG 1553+113. The MAGIC telescopes have observed PG 1553+113 at VHE since 2005. An intense multi-wavelength campaign aimed at unbiased monitoring of the source activity, from radio to VHE gamma rays, started in 2015. Here we will show the multiwavelength data going back almost a decade, from radio to VHE, along with the results from the ongoing observations.
Collaboration MAGIC Collaboration

Primary author

Gareth Hughes (ETH Zurich)


Dr Angela Sandrinelli (Università degli Studi dell'Insubria) Antonio Stamerra (INAF-OATo / SNS-Pisa) Dr Carlo Ferrigno (ISDC data center for astrophysics) Dario Gasparrini (ASDC/ INFN Perugia) Elina Lindfors (University of Turku) Elisa Prandini (University of Geneva) Francesco Longo Josefa Becerra Gonzalez (NASA GSFC) Dr Miguel Nievas (Complutense University of Madrid) Dr Paolo Da Vela (INFN Pisa) Rachele desiante (Università di Udine and INFN) Sara Cutini (ASI Science Data Center - INFN) Simone Paiano (Univ. + INFN) Stefano Ciprini (INFN & University Perugia) Stefano Covino (INAF / Brera) Ulisses Barres (Centro Brasileiro de Pesquisas Físicas)

Presentation Materials