| Canonical Name: | RX J0648.7+1516 |
| TeVCat Name: | TeV J0648+152 |
| Other Names: | VER J0648+152 GB J0648+1516
1FGL J0648.8+1516 |
| Source Type: | HBL |
| R.A.: | 06 48 45.6 (hh mm ss) |
| Dec.: | +15 16 12 (dd mm ss) |
| Gal Long: | 198.99 (deg) |
| Gal Lat: | 6.32 (deg) |
| Distance: | z=0.179 |
| Flux: | 0.033 (Crab Units) |
| Energy Threshold: | 200 GeV |
| Spectral Index: | 4.4 |
| Extended: | No |
| Discovery Date: | 2010-03 |
| Discovered By: | VERITAS |
| TeVCat SubCat: | Default Catalog |
Source Notes:
Source position and its uncertainty:
From
Aliu et al. (2011):
- R.A. (J2000): 102.19 deg +/- 0.11 deg (stat) (= 06 48 45.6)
- Dec. (J2000): 15.27 deg +/- 0.12 deg (stat) (= 15 16 12)
- The systematic pointing uncertainty is less than 25" (7 x 10-3 deg)
From
Ong et al. (2010):
- RA (J2000): 06 48 49.7
- Dec (J2000): +15 16 22
- the position of 1FGL J0648.8+1516 is quoted here as it was the target of the observations
- no information available on positional uncertainty
Source Association:
From
Massaro et al. (2012):
- "The association of this WISE source strongly supports its blazar
classification and given its position on the Wise Blazar Strip, we
suggest it is a new TBL (TeV-detected HBL)."
From
Aliu et al. (2011):
- "Following the VHE discovery, the optical identification and spectroscopic
redshift were obtained using the Shane 3-m Telescope at the Lick Observatory,
showing the unidentified object to be a BL Lac type with a redshift of z = 0.179.
Broadband multiwavelength observations ... can be used to sub-classify the blazar
as a high-frequency-peaked BL Lac (HBL) object"
From
Stephen et al. (2010):
- "All these properties suggest that the X-ray source is the likely
extragalactic counterpart of the Fermi object, probably a blazar at
low galactic latitudes."
From
VERITAS ATel 2486:
- "This source is consistent with the Fermi-LAT gamma-ray source 1FGL J0648.8+1516
(RA 06 48 49.7, dec +15 16 22, J2000) and the radio and X-ray source RGB J0648+152
(RA 06 48 47.6, dec +15 16 25, J2000), of unknown redshift."
Spectral Properties:
From
Aliu et al. (2011):
- 4.4 +/- 0.8(stat) +/- 0.3(syst)
From
Benbow et al. (2011):
- Spectral index: 4.4 +/- 0.8
Distance:
From
Aliu et al. (2016):
- "Two spectra were obtained during the nights of UT 2010 March 18 and
2010 November 6 (MJD 55245 and 55506, respectively) with the KAST
double spectrograph on the Shane 3 m Telescope at UCO/Lick
Observatory"
- "Inspection of the March spectrum reveals Ca H+K absorption lines at
redshift z = 0.179. This redshift is confirmed in the second spectrum
at higher signal-to-noise ratio."
Seen by: VERITAS
-
Identification of the infrared non-thermal emission in Blazars
Massaro, F. et al., Astrophysical Journal p (2012) [LINK]
-
VHE Blazar Discoveries with VERITAS
Wystan Benbow for the VERITAS Collaboration, ArXiv e-prints p (2011) [LINK]
-
Multiwavelength Observations of the Previously Unidentified Blazar RX J0648.7+1516
Aliu, E. et al., ArXiv e-prints p (2011) [LINK]
-
Discovery and identification of two gamma-ray blazars at low galactic latitude with VERITAS
Errando et al., ArXiv e-prints p (2011) [LINK]
-
VERITAS Discovery of Very High-Energy Gamma-Ray Emission from 1FGL J0648.8+1516
Ong, R.A. et al., The Astronomer's Telegram 2486 p1-+ (2010) [LINK]
-
Using the ROSAT catalogue to find counterparts for unidentified objects in the first Fermi/LAT catalogue
Stephen, J.B. et al., MNRAS 408 p422-429 (2010) [LINK]
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