Canonical Name: | PKS 2155-304 |
TeVCat Name: | TeV J2158-302 |
Other Names: | HESS J2158-302 |
Source Type: | HBL |
R.A.: | 21 58 52.7 (hh mm ss) |
Dec.: | -30 13 18 (dd mm ss) |
Gal Long: | 17.74 (deg) |
Gal Lat: | -52.25 (deg) |
Distance: | z=0.116 |
Flux: | 0.15 (Crab Units) |
Energy Threshold: | 300 GeV |
Spectral Index: | 3.53 |
Extended: | No |
Discovery Date: | 1999-06 |
Discovered By: | Durham |
TeVCat SubCat: | Default Catalog |
Source Notes:
Source position and its uncertainty:
From the HESS
Online Catalog:
- R.A. (J2000): 21:58:52.7
- Dec. (J2000): -30:13:18
From
Aharonian et al. (2005):
- state that the point source is located at a distance
in RA of 9 +/- 12 arcsec(stat) and in Dec of 14 +/- 10 arcsec(stat) from the position
of PKS 2155-304
- that position is not quoted
- systematic errors on the pointing are less than 20 arcsec in RA and declination
Flux:
- The gamma-ray flux from PKS 2155-304 has been found to be variable (see references below)
- From
Abramowski et al. (2010):
- the average flux was at the level of about 15% of the Crab between 2005-2007
From
Aharonian et al. (2007):
- the gamma-ray flux reached a peak value of about 15 times
the Crab steady flux during flare in July 2006
From
Aleksic et al. (2012):
- Significant variability was detected during these large-zenith-angle observations
Spectral Index:
From
Abramowski et al. (2010):
- 3.53 +/- 0.06(stat) +/- 0.10(syst) for low state 2005 - 2007
From
Aleksic et al. (2012):
- 3.5 +/- 0.2 (large-zenith-angle observations)
Seen by: Durham, H.E.S.S., CANGAROO, MAGIC
-
Probing X-ray Timing and Spectral Variability in the Blazar PKS 2155-304 Over a Decade of XMM-Newton Observations
Bhatta, Gopal et al., arXiv e-prints parXiv:2410.01278 (2024) [LINK]
-
Search for periodicities in High Energy AGNs with a time-domain approach
Rueda, Hector et al., arXiv e-prints parXiv:2206.07614 (2022) [LINK]
-
About 300 days Optical Quasi-periodic Oscillations in the Long-term Light Curves of the Blazar PKS 2155-304
Zheng, Qi et al., Research in Astronomy and Astrophysics 22 p085024 (2022) [LINK]
-
Evidence of Periodic Variability in Gamma-ray Emitting Blazars with Fermi-LAT
Peņil, P. et al., arXiv e-prints parXiv:2211.01894 (2022) [LINK]
-
Searching for photon-ALPs mixing effects in AGN gamma-ray energy spectra
Yu, Qixin and Horns, Dieter, arXiv e-prints parXiv:2208.00079 (2022) [LINK]
-
X-ray Intraday Variability of the TeV Blazar PKS 2155-304 with Suzaku During 2005-2014
Zhang, Zhongli et al., arXiv e-prints parXiv:2101.05977 (2021) [LINK]
-
Correlation between optical and gamma-ray flux variations in BL Lacs
Rajput, Bhoomika et al., MNRAS p (2021) [LINK]
-
Blazars SED in Conical Plasma Flow : a Monte Carlo study
Kumar, Nagendra and Kushwaha, Pankaj, arXiv e-prints parXiv:2106.06263 (2021) [LINK]
-
Convex X-ray Spectra of PKS 2155-304 and Constraints on the Minimum Electron Energy
Jagan, Sitha K. et al., arXiv e-prints parXiv:2107.04534 (2021) [LINK]
-
A unified model for orphan and multi-wavelength blazar flares
Wang, Ze-Rui et al., arXiv e-prints parXiv:2112.01739 (2021) [LINK]
-
Comprehensive power spectral density analysis of the Fermi-LAT gamma-ray light curves of selected blazars
Zywucka, Natalia et al., arXiv e-prints parXiv:2112.01761 (2021) [LINK]
-
The implications of the axion like particle from the Fermi-LAT and H.E.S.S. observations of PG 1553+113 and PKS 2155-304
Guo, Junguang et al., arXiv e-prints parXiv:2002.07571 (2020) [LINK]
-
Systematic search for gamma-ray periodicity in active galactic nuclei detected by the Fermi Large Area Telescope
Penil, P. et al., arXiv e-prints parXiv:2002.00805 (2020) [LINK]
-
Extragalactic background light models and GeV-TeV observation of blazars
Singh, K.K. and Meintjes, P.J., arXiv e-prints parXiv:2004.01933 (2020) [LINK]
-
Blazar variability power spectra from radio up to TeV photon energies: Mrk 421 and PKS 2155-304
Goyal, Arti, arXiv e-prints parXiv:2004.02765 (2020) [LINK]
-
Looking at Blazar Light Curve Periodicities with Gaussian Processes
Covino, Stefano et al., arXiv e-prints parXiv:2004.10763 (2020) [LINK]
-
Blazar Variability: A Study of Non-stationarity and the Flux-RMS Relation
Bhattacharyya, Souradip et al., arXiv e-prints parXiv:2005.05230 (2020) [LINK]
-
The optical polarization of the blazar PKS 2155-304 during an optical flare in 2010
Peceur, N.W. et al., MNRAS p (2020) [LINK]
-
X-ray Flux and Spectral Variability of the TeV Blazars Mrk 421 and PKS 2155-304
Gupta, Alok C., arXiv e-prints parXiv:2009.02263 (2020) [LINK]
-
Short-term X-ray Variability during Different Activity Phases of Blazars S5 0716+714 and PKS 2155-304
Kushwaha, Pankaj and Pal, Main, arXiv e-prints parXiv:2009.06443 (2020) [LINK]
-
Variability studies and modelling of the blazar PKS 2155-304 in the light of a decade of multi-wavelength observations
Chevalier, J. et al., MNRAS 484 p749-759 (2019) [LINK]
-
Evaluating Quasi-Periodic Variations in the gamma-ray Lightcurves of Fermi-LAT Blazars
Ait Benkhali, F. et al., arXiv e-prints p (2019) [LINK]
-
Blazar variability - expect the unexpected
Zacharias, M., arXiv e-prints p (2019) [LINK]
-
Constraints on axionlike particles with different magnetic field models from the PKS 2155-304 energy spectrum
Bu, Jia and Li, Ya-Ping, arXiv e-prints parXiv:1906.00357 (2019) [LINK]
-
Search for spectral features in extragalactic background light with gamma-ray telescopes
Korochkin, A. et al., arXiv e-prints parXiv:1906.12168 (2019) [LINK]
-
H.E.S.S. Monitoring of PKS 2155-304 in 2015 and 2016
Wierzcholska, Alicja et al., Galaxies 7 p21 (2019) [LINK]
-
Analysis of the H.E.S.S. public data release with ctools
Knodlseder, Jurgen et al., arXiv e-prints parXiv:1910.09456 (2019) [LINK]
-
Unraveling The Complex Nature Of The Very High-Energy Gamma-Ray Blazar PKS 2155-304
Wierzcholska, Alicja et al., arXiv e-prints parXiv:1912.01880 (2019) [LINK]
-
Nature of gamma-ray variability in blazars
Bhatta, Gopal and Dhital, Niraj, arXiv e-prints parXiv:1911.08198 (2019) [LINK]
-
Simultaneous observations of the blazar PKS2155-304 from Ultra-Violet to TeV energies
H.E.S.S. and Fermi and NuStar Collaborations, arXiv e-prints parXiv:1912.07273 (2019) [LINK]
-
Quasi-periodicities of BL Lac Objects and Their Origin
Sandrinelli et al., ArXiv e-prints p (2018) [LINK]
-
Establishing the Spectral Turnover of Blazar PKS 2155-304 as an Outcome of Radiative Losses
Jagan, S.K. et al., ArXiv e-prints p (2018) [LINK]
-
Blazar Spectra with Hard-sphere-like Acceleration of Electrons
Asano, K. and Hayashida, M., ArXiv e-prints p (2018) [LINK]
-
X-ray spectral variability of blazars using principal component analysis
Gallant, D. et al., ArXiv e-prints p (2018) [LINK]
-
Systematic investigation of X-ray spectral variability of TeV blazars during flares in the RXTE era
Wang, Y. et al., ArXiv e-prints p (2018) [LINK]
-
Gamma-ray quasi-periodicities of blazars. A cautious approach
Covino, S. et al., ArXiv e-prints p (2018) [LINK]
-
Probing the Jets of Blazars Using the Temporal Symmetry of Their Multi-Wavelength Outbursts
Roy, N. et al., ArXiv e-prints p (2018) [LINK]
-
Probing the IGMF with the next generation Cherenkov telescopes
Fernandez Alonso, M. et al., ArXiv e-prints p (2018) [LINK]
-
Breaking degeneracy in jet dynamics: multi-epoch joint modelling of the BL Lac PKS 2155-304
Lucchini, M. et al., ArXiv e-prints p (2018) [LINK]
-
To be or not to be: hot WHIM absorption in the blazar PKS 2155-304 sight line?
Nevalainen, J. et al., ArXiv e-prints p (2018) [LINK]
-
Long-term optical monitoring of TeV emitting blazars. I. Data analysis
Nilsson, K. et al., A&A 620 pA185 (2018) [LINK]
-
The Optical Polarization Variability of PKS 2155-304: Correlations at Low and High Energies
Pekeur, N. et al., ArXiv e-prints p (2017) [LINK]
-
Expected signatures from hadronic emission processes in the TeV spectra of BL Lac objects
Zech, A. et al., ArXiv e-prints p (2017) [LINK]
-
X-ray Intraday Variability of Five TeV Blazars with NuSTAR
Pandey, A. et al., ArXiv e-prints p (2017) [LINK]
-
A search for cyclical sources of gamma-ray emission on the period range from days to years in the Fermi-LAT sky
Prokhorov, D.A. and Moraghan, A., ArXiv e-prints p (2017) [LINK]
-
The Hard X-ray emission of the blazar PKS 2155--304
Gaur, H. et al., ArXiv e-prints p (2017) [LINK]
-
Hard X-ray properties of NuSTAR blazars
Bhatta, G. et al., ArXiv e-prints p (2017) [LINK]
-
Tests of the Einstein Equivalence Principle using TeV Blazars
Wei, J. J. et al., ArXiv e-prints p (2016) [LINK]
-
Evidence for quasi-periodic oscillations in the optical polarization of the blazar PKS 2155-304
Pekeur, N.W. et al., ArXiv e-prints p (2016) [LINK]
-
First NuSTAR observations of the BL Lac - type blazar PKS 2155-304: constraints on the jet content and distribution of radiating particles
Madejski, G.M. et al., ArXiv e-prints p (2016) [LINK]
-
Hadronic modeling of TeV AGN: gammas and neutrinos
Cerruti, M. et al., ArXiv e-prints p (2016) [LINK]
-
Characterizing the gamma-ray long-term variability of PKS 2155-304 with H.E.S.S. and Fermi-LAT
H.E.S.S. Collaboration et al., ArXiv e-prints p (2016) [LINK]
-
The low-frequency radio emission in blazar PKS2155-304
Pandey-Pommier et al., ArXiv e-prints p (2016) [LINK]
-
Gamma-ray QPO in PKS 2155-304 - Revisiting Quasi-Periodic modulation in gamma-ray Blazar PKS 2155-304 with Fermi Pass 8 data
Zhang, P. et al., ArXiv e-prints p (2016) [LINK]
-
Gamma-ray blazar spectra with H.E.S.S. II mono analysis: the case of PKS 2155-304 and PG 1553+113
H.E.S.S. Collaboration et al., ArXiv e-prints p (2016) [LINK]
-
Gamma-ray blazar spectra with H.E.S.S. II mono analysis: the case of PKS 2155-304 and PG 1553+113
Zaborov, D. et al., ArXiv e-prints p (2016) [LINK]
-
Multiwavelength campaign on the HBL PKS\2155-304 : A new insight on its spectral energy distribution
Sanchez, D.A. et al., ArXiv e-prints p (2015) [LINK]
-
The Extragalactic sky with the High Energy Stereoscopic System
D.A. Sanchez for the H.E.S.S. collaboration, ArXiv e-prints p (2015) [LINK]
-
Long term variability of the blazar PKS 2155-304
Chevalier, J. et al., ArXiv e-prints p (2015) [LINK]
-
Optical and X-ray Variability of Blazars
Gupta, A.C., ArXiv e-prints p (2015) [LINK]
-
The Cluster-Scale Environment of PKS 2155-304
Farina, E.P. et al., ArXiv e-prints p (2015) [LINK]
-
Flux and spectral variability of the blazar PKS 2155-304 with XMM-Newton: Evidence of Particle Acceleration and Synchrotron Cooling
Bhagwana, J. et al., ArXiv e-prints p (2015) [LINK]
-
Search for Extended Gamma-ray Emission around AGN with H.E.S.S. and Fermi-LAT
H.E.S.S. Collaboration et al., ArXiv e-prints p (2014) [LINK]
-
Fermi-LAT observation of increased gamma-ray activity from PKS 2155-304
Cutini, S., The Astronomer's Telegram 6148 p1 (2014) [LINK]
-
On the radio and NIR jet of PKS 2155-304 and its close environment
Liuzzo, E. et al., ArXiv e-prints p (2013) [LINK]
-
Fermi-LAT observation of increased gamma-ray activity from PKS 2155-304
Cutini, S. on behalf of the Fermi-LAT Collaboration, The Astronomer's Telegram 4755 p1 (2013) [LINK]
-
Constraints on axion-like particles with H.E.S.S. from observations of PKS 2155-304
Brun, P. et al., ArXiv e-prints p (2013) [LINK]
-
Testing time variability of gamma-ray flux
Nosek, D. et al., ArXiv e-prints p (2013) [LINK]
-
Constraints on axionlike particles with H.E.S.S. from the irregularity of the PKS 2155-304 energy spectrum
H.E.S.S. Collaboration et al., ArXiv e-prints p (2013) [LINK]
-
A multiwavelength view of the flaring state of PKS 2155-304 in 2006
HESS Collaboration et al., ArXiv e-prints p (2012) [LINK]
-
Searches for very high energy gamma rays from blazars with CANGAROO-III telescope in 2005-2009
Mizumura, Y. et al., ArXiv e-prints p (2012) [LINK]
-
TeV blazar variability: the firehose instability?
Subramanian, P. et al., ArXiv e-prints p (2012) [LINK]
-
The H.E.S.S. extragalactic sky
Raue, M. and for the H.E.S.S. collaboration, ArXiv e-prints p (2012) [LINK]
-
A Simple Method to Test for Energy-Dependent Dispersion in High Energy Light-Curves of Astrophysical Sources
Barres de Almeida, U. and Daniel, M., ArXiv e-prints p (2012) [LINK]
-
High zenith angle observations of PKS 2155-304 with the MAGIC-I telescope
Aleksic, J. et al., A&A 544 pA75 (2012) [LINK]
-
A two-component model for the high-energy variability of blazars. Application to PKS 2155-304
Reynoso, M.M. et al., A&A 545 pA125 (2012) [LINK]
-
A mixed lepto-hadronic scenario for PKS 2155-304
Cerruti, M. et al., 1505 p635-638 (2012) [LINK]
-
Radiative properties of reconnection-powered minijets in blazars
Nalewajko, K. et al., MNRAS p188-+ (2011) [LINK]
-
Search for Lorentz Invariance breaking with a likelihood fit of the PKS 2155-304 Flare Data Taken on MJD 53944
HESS Collaboration et al., ArXiv e-prints p (2011) [LINK]
-
Time Variability Analysis of the SMARTS Monitoring of Fermi Blazars
Chatterjee, R. et al., ArXiv e-prints p (2011) [LINK]
-
Broad Ly alpha Emission from Three Nearby BL Lacertae Objects
Stocke, J.T. et al., ArXiv e-prints p (2011) [LINK]
-
Rapid VHE variability in blazars
Volpe, F. and Rieger, F.M., ArXiv e-prints p (2011) [LINK]
-
Variability in Blazars: Clues from PKS 2155-304
Narayan, R. and Piran, T., ArXiv e-prints p (2011) [LINK]
-
Long-term optical variability of PKS 2155-304
Kastendieck, M.A. et al., ArXiv e-prints p (2011) [LINK]
-
Lepto-hadronic modelling of blazar emission
Cerruti, M. et al., ArXiv e-prints p (2011) [LINK]
-
VHE gamma-ray emission of PKS 2155-304: spectral and temporal variability
HESS Collaboration et al., A&A 520 pA83+ (2010) [LINK]
-
Particle acceleration and magnetic field structure in PKS2155-304: optical polarimetric observations
Barres de Almeida, U. et al., MNRAS 408 p1778-1787 (2010) [LINK]
-
Detection of Intra-day Variability Timescales of Four High-energy Peaked Blazars with XMM-Newton
Gaur, H. et al., ApJ 718 p279-291 (2010) [LINK]
-
Modeling the Emission from Blazar Jets:. the Case of PKS 2155-304
Weidinger, M. and Spanier, F., International Journal of Modern Physics D 19 p887-892 (2010) [LINK]
-
Modelling the steady state spectral energy distribution of the BL-Lac Object PKS 2155-30.4 using a selfconsistent SSC model
Weidinger, M. et al., Astrophysics and Space Sciences Transactions 6 p1-7 (2010) [LINK]
-
Short-term VHE variability in blazars: PKS 2155-304
Rieger, F.M. and Volpe, F., A&A 520 pA23+ (2010) [LINK]
-
The Jets of TeV Blazars at Higher Resolution: 43 GHz and Polarimetric VLBA Observations from 2005 to 2009
Piner, B.G. et al., ApJ 723 p1150-1167 (2010) [LINK]
-
Simultaneous multiwavelength observations of the second exceptional gamma-ray flare of PKS 2155-304 in July 2006
Aharonian, F. et al., A&A 502 p749-770 (2009) [LINK]
-
Fast TeV variability in blazars: jet in a jet
Giannios, Dimitrios et al., p (2009) [LINK]
-
A 4.6 h quasi-periodic oscillation in the BL Lacertae PKS 2155-304?
Lachowicz, P. et al., A&A 506 pL17-L20 (2009) [LINK]
-
High zenith angle observations of PKS 2155-304 with the MAGIC telescope
Hadasch, D. et al., ArXiv e-prints p (2009) [LINK]
-
Blazars as beamlights to probe the Extragalactic Background Light in the Fermi and Cherenkov telescopes era
Persic, M. et al., ArXiv e-prints p (2009) [LINK]
-
Monitoring the synchrotron and Compton emission of PKS 2155-304: one year of observations with RXTE and Fermi
Sanchez, D. and Giebels, B., ArXiv e-prints p (2009) [LINK]
-
Simultaneous Observations of PKS 2155-304 with HESS, Fermi, RXTE, and Atom: Spectral Energy Distributions and Variability in a Low State
Aharonian, F. et al., ApJ 696 pL150-L155 (2009) [LINK]
-
The Stellar Contribution to the Extragalactic Background Light and Absorption of High-Energy Gamma Rays
Razzaque, S. et al., ApJ 697 p483-492 (2009) [LINK]
-
Rapid variability in TeV blazars: the case of PKS2155-304
Ghisellini, G. and Tavecchio, F., MNRAS 386 pL28-L32 (2008) [LINK]
-
X-ray spectral evolution of TeV BL Lacertae objects: eleven years of observations with BeppoSAX, XMM-Newton and Swift satellites
Massaro, F. et al., A&A 478 p395-401 (2008) [LINK]
-
Black-Hole Engine Kinematics, Flares from PKS 2155-304, and Multiwavelength Blazar Analysis
Dermer, C.D. et al., ArXiv e-prints p (2008) [LINK]
-
XMM-Newton Observations of the TeV BL Lacertae Object PKS 2155-304 in 2006: Signature of Inverse Compton X-Ray Emission?
Zhang, Y.H., ApJ 682 p789-797 (2008) [LINK]
-
Infrared to X-ray observations of PKS 2155-304 in a low state
Foschini, L. et al., A&A 484 pL35-L38 (2008) [LINK]
-
Modelling rapid TeV variability of PKS2155-304
Katarzynski, K. et al., MNRAS 390 p371-376 (2008) [LINK]
-
The implications from CANGAROO-III observations of TeV blazar PKS 2155-304
Nishijima, K. et al., 1085 p486-489 (2008) [LINK]
-
Limits on an Energy Dependence of the Speed of Light from a Flare of the Active Galaxy PKS 2155-304
Aharonian, F. et al., Physical Review Letters 101 p170402-+ (2008) [LINK]
-
CANGAROO-III Observations of the 2006 Outburst of PKS 2155-304
Sakamoto, Y. et al., ApJ 676 p113-120 (2008) [LINK]
-
An Exceptional Very High Energy Gamma-Ray Flare of PKS 2155-304
Aharonian, F. et al., ApJ 664 pL71-L74 (2007) [LINK]
-
Swift follow-up of the gigantic TeV outburst of PKS 2155 - 304 in 2006
Foschini, L. et al., 921 p329-330 (2007) [LINK]
-
VHE Gamma-Ray Flare of PKS2155-304 detected by the MAGIC Telescope
Hadasch, D. et al., Astronomische Nachrichten 328 p680-+ (2007) [LINK]
-
H.E.S.S. observations of PKS 2155-304
Aharonian, F. et al., A&A 430 p865-875 (2005) [LINK]
-
Multi-wavelength observations of PKS 2155-304 with HESS
Aharonian, F. et al., A&A 442 p895-907 (2005) [LINK]
-
PKS 2155-304 - a source of VHE gamma-rays
Chadwick, P.M. et al., Astroparticle Physics 11 p145-148 (1999) [LINK]
-
The environment of the BL Lacertae object PKS 2155-304
Falomo, R. et al., ApJ 411 pL63-L66 (1993) [LINK]
-
X-ray spectrum of the BL Lacertae object PKS 2155-304
Ohashi, T. et al., PASJ 41 p709-719 (1989) [LINK]
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