2016A&A...585A..25T


Query : 2016A&A...585A..25T

2016A&A...585A..25T - Astronomy and Astrophysics, volume 585A, 25-25 (2016/1-1)

On the detectability of Lorentz invariance violation through anomalies in the multi-TeV γ-ray spectra of blazars.

TAVECCHIO F. and BONNOLI G.

Abstract (from CDS):

Cosmic opacity for very high energy γ rays (E>10TeV) that result from the interaction with the extragalactic background light can be strongly reduced. This is because of possible Lorentz-violating terms in the dispersion relations for particles expected for several versions of quantum gravity theories. We discuss the possibility of using very high-energy observations of blazars to detect anomalies in the cosmic opacity that are induced by Lorentz invariance violation (LIV), taking the possibility of using extreme BL Lacertae (BL Lac) objects into particular consideration, as well as the bright and nearby BL Lac Mkn 501. We derive the modified expression for the optical depth of γ rays by also taking redshift dependence into consideration and, by applying this, we derive the expected high-energy spectrum above 10TeV of Mkn 501, in high and low states, and of the extreme BL Lac 1ES 0229+200. Along with the nearby and well studied BL Lac Mkn 501 especially in high state, other suitable targets are extreme BL Lac objects, characterized by quite hard TeV intrinsic spectra which probably extend at the energies relevant when detecting LIV features.

Abstract Copyright:

Journal keyword(s): BL Lacertae objects: individual: Mkn 501 - gamma rays: general - BL Lacertae objects: individual: 1ES 0229+200 - astroparticle physics

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 QSO B0229+200 BLL 02 32 48.6154943841 +20 17 17.493345304   18.0 18.00     ~ 277 3
2 Mrk 421 BLL 11 04 27.3139210166 +38 12 31.798324828   13.50 12.90 8.31   ~ 2470 1
3 4C 39.49 BLL 16 53 52.21668494 +39 45 36.6089458 14.09 14.15 13.29 8.26   ~ 1987 2

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2021.10.17-00:34:43

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