|Canonical Name:||KUV 00311-1938|
|TeVCat Name:||TeV J0033-193|
|R.A.:||00 33 34.2 (hh mm ss)|
|Dec.:||-19 21 33 (dd mm ss)|
|Gal Long: ||94.17 (deg)|
|Gal Lat: ||-81.22 (deg)|
|Distance: ||z= |
|Flux:||0.01 (Crab Units)|
|Energy Threshold:|| GeV|
|Discovered By: ||H.E.S.S.|
|TeVCat SubCat:||Newly Announced|
- This detection was announced in July 2012 at the Gamma 2012
Heidelberg by Becherini (poster) and Stegmann (presentation).
- It is the H.E.S.S. Source of the month
for August 2012.
Source position and its uncertainty:
- The source position is taken from NED
- R.A. (J2000): 00 33 34.2
- Dec. (J2000): -19 21 33
- No information on the positional uncertainty is available.
From Fernandez Alonso, Pichel & Rovero
- the authors use gamma-ray observations of this object to place
constraints on its redshift. Each of the main current models for the
absorption by the extragalactic background light are utilised.
- "By comparing Fermi-LAT and HESS observations from similar time
periods and under the assumption that the TeV intrinsic spectrum is a
prolongation of the GeV spectrum, we found the measured flux to be
consistent within 1 sigma errors with the absorbed flux of a source at
z=0.5 and z=0.6 depending on the EBL model."
From Pita et al.
- from spectroscopy: 0.506 <= z <= 1.54
- from imaging: z >= 0.47
From Pita et al.
- "z ≥0.506; z =0.61 not confirmed"
Seen by: H.E.S.S.
Redshift of the Blazar KUV 00311-1938: Modeling the EBL Absorption
Fernandez Alonso, M. Pichel, A. & Rovero, A. C., arXiv e-prints parXiv:1909.03960 (2019) [LINK]
Spectroscopy of High Energy BL Lac Objects with X-shooter on the VLT
Pita, S. et al., ArXiv e-prints p (2013) [LINK]
Discovery of VHE gamma-ray emission from the very distant BL Lac KUV 00311-1938 by H.E.S.S.
Becherini, Y. et al., 1505 p490-493 (2012) [LINK]
Very-high-energy gamma-ray emission from high-redshift blazars
Neronov, A. et al., ArXiv e-prints p (2012) [LINK]
Discovery of the most distant BL Lacertae at very high energies with H.E.S.S.
H.E.S.S. Collaboration, Y. Becherini, C. Boisson, M. Cerruti,
Poster at the 5th International Symposium on High-Energy Gamma-Ray Astronomy, Heidelberg, July 9-13, 2012 [LINK]
Want a reference added? Send a bibtex entry to the TeVCat Team