Back to Main Page
Observation Date (UT) Observation Lat

Canonical Name:1ES 0502+675
TeVCat Name:TeV J0507+676
Other Names:
Source Type:HBL
R.A.:05 07 56.2 (hh mm ss)
Dec.:+67 37 24 (dd mm ss)
Gal Long: 143.79 (deg)
Gal Lat: 15.89 (deg)
Distance: z=0.34
Flux:0.06 (Crab Units)
Energy Threshold:350 GeV
Spectral Index:
Discovery Date:2009-11
Discovered By: VERITAS
TeVCat SubCat:Newly Announced

Source Notes:

Source position and its uncertainty:
From Ong et al.(2009):
- no information available
- RA and Dec taken from NED position of 1ES 0502+675

Spectral Information:
From Benbow et al. (2011):
- Spectral index: 3.92 +/- 0.35

Various redshifts have been reported for this blazar in the literature.
We are quoting the most recent measurement, z = 0.340, of Shaw et al. (2013)
in the main TeVCat table.
Details of the various measurements:
z = 0.341
- Scarpa et al. (1999) quote a redshift of z = 0.341 with a reference
to "E. S. Perlmann 1998, private communication". Further details are
given of this private communication: "Recently, a redshift of z =
0.314 has been reported, based on detection of Ca II H and K and Mg II
absorption lines"
z = 0.416
- Landt et al. (2002) report a redshift of z = 0.416 and state
"We obtained this redshift, which is different from the one published
by Perlman et al. (1996), after a careful reinspection of the
electronic spectral file". There does not seem to be a redshift quoted
in Perlman et al. (1996) but perhaps the private communication with
Perlman that is cited for z = 0.342 refers to an analysis of the
1ES 0502+675 spectrum presented in this Perlman et al. (1996) paper,
which shows four absorption lines.
z = 0.340
- Shaw et al. (2013) report a redshift of z = 0.340
from spectroscopic observations with the Marcario Low Resolution
Spectrograph on the Hobby-Eberly Telescope.

Seen by: VERITAS
Want a reference added? Send a bibtex entry to the TeVCat Team
Try TevCat 2.0 Beta!