| Canonical Name: | B3 2247+381 |
| TeVCat Name: | TeV J2250+384 |
| Other Names: | 1FGL J2250.1+3825 |
| Source Type: | HBL |
| R.A.: | 22 50 06.6 (hh mm ss) |
| Dec.: | +38 25 58 (dd mm ss) |
| Gal Long: | 98.27 (deg) |
| Gal Lat: | -18.56 (deg) |
| Distance: | z=0.1187 |
| Flux: | 0.04 (Crab Units) |
| Energy Threshold: | 150 GeV |
| Spectral Index: | 3.2 |
| Extended: | No |
| Discovery Date: | 2010-10 |
| Discovered By: | MAGIC |
| TeVCat SubCat: | Default Catalog |
Source Notes:
Source position and its uncertainty:
From
Aleksic et al. (2012):
- "The source position and extension, determined by a 2D Gaussian fit
of the sky map produced with the cuts above, are
consistent with a point-like
source placed at the position of B3 2247+381
within 0.015 deg, well within
the statistical uncertainty and the systematic pointing uncertainties of MAGIC."
From
Mariotti et al. (2010):
- The source is positionally consistent with the Fermi-LAT gamma-ray
source 1FGL J2250.1+3825 (RA 22 50 06.6 dec +38 25 58, J2000)
- no uncertainty on the position is provided
From
ATel 2910:
The MAGIC observations were triggered by an optical
high-state of the source, reported by the
Tuorla blazar monitoring program.
Spectral Properties:
From
Aleksic et al. (2012):
- Spectral index: 3.2 +/- 0.5(stat) +/- 0.5(syst)
From
Berger et al. (2011):
- Spectral index: 3.2 +/- 0.5(stat) +/- 0.5(syst)
Flux:
From
Berger et al. (2011):
- The flux is quoted as 4% of the Crab Nebula above an energy
threshold of 150 GeV (abstract) and 2% of the Crab Nebula flux above
150 GeV (main text)
Seen by: MAGIC
-
Discovery of VHE gamma-ray emission from the BL Lac object B3 2247+381 with the MAGIC telescopes
The MAGIC Collaboration et al., ArXiv e-prints p (2012) [LINK]
-
Overview of the results from extra-galactic observations with the MAGIC telescopes
Berger, K. and for the MAGIC Collaboration, ArXiv e-prints p (2011) [LINK]
-
Exploring the very high energy gamma-ray emission (E > 100 GeV) of the hard spectrum Fermi sources 1FGL J2001.1+4351 and B3-2247+381 with MAGIC
Berger, K. et al., ArXiv e-prints p (2011) [LINK]
-
Connection Between Optical and VHE Gamma-ray Emission in Blazar Jets
Reinthal, R. et al., ArXiv e-prints p (2011) [LINK]
-
Discovery of Very High Energy Gamma-Ray Emission from B3 2247+381 by MAGIC
M. Mariotti on behalf of the MAGIC Collaboration, ATel 2910 [LINK]
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