| Canonical Name: | RGB J2056+496 |
| TeVCat Name: | TeV J2056+496 |
| Other Names: | |
| Source Type: | Blazar |
| R.A.: | 20 56 42.7 (hh mm ss) |
| Dec.: | +49 40 07 (dd mm ss) |
| Gal Long: | 89.32 (deg) |
| Gal Lat: | 2.76 (deg) |
| Distance: | |
| Flux: | 0.029 (Crab Units) |
| Energy Threshold: | 300 GeV |
| Spectral Index: | |
| Extended: | No |
| Discovery Date: | 2016-11 |
| Discovered By: | VERITAS |
| TeVCat SubCat: | Newly Announced |
Source Notes:
This source was announced in an
ATel on 161106
From
Benbow et al.
- "The VERITAS collaboration is interpreting this excess (120 events
above background at the position of the blazar) as the discovery of
VHE gamma-ray emission from the blazar, noting that the blazar is only
∼13 arc-seconds from the micro-quasar candidate LS III +49 13, and the
two objects are effectively co-located for VERITAS."
Source Position:
The position reported is that given in
NED
R.A. (J2000): 20h 56m 42.7s
Dec. (J2000): +49d 40m 07s
Flux:
From
Benbow et al.
- the flux above 300 GeV is approx. 2.9% of the Crab Nebula flux
From
Mukherjee et al.:
- the flux above 200 GeV is approx. 4% of the Crab Nebula flux
Distance:
- the redshift of this object is unknown
Classification:
From
Ackermann et al. (2016):
- this object is classified as a blazar candidate of uncertain type II
in 2FHL. This means that "the counterpart is lacking an optical
spectrum but a reliable evaluation of the SED synchrotron-peak
position is possible" (
Ackermann et al. (2015))
Seen by: VERITAS
-
Highlights from the VERITAS AGN Observation Program
Benbow, W. and the VERITAS Collaboration, ArXiv e-prints p (2017) [LINK]
-
VERITAS Discovery of VHE Emission from RGB J2056+496
Mukherjee, R., The Astronomer's Telegram 9721 p1 (2016) [LINK]
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