H.E.S.S. Source of the Month
Each month a TeV gamma ray source investigated with the H.E.S.S. telescopes is featured. See also the pages on Astrophysics with H.E.S.S.: The Nonthermal Universe with an overview of the physics and the source types. Details about the H.E.S.S. telescopes can be found here.
2023
- August 2023 - The identity crisis of the blazar PKS 1510-089
- July 2023 - Cosmic Conspiracy Theories: Neutrinos and Gamma Rays from PKS 0735+178?
- June 2023 - Flares in the atmosphere
- May 2023 - Primordial Black Holes
- April 2023 - On HESS Follow-up observations of the Brightest Gamma-ray Burst Of All Time a.k.a. the BOAT
- March 2023 - Tracking down the mysterious gamma-ray source HESS J1809–193
- February 2023 - Chasing gamma rays in Virgo A
- January 2023 - Constraining Cosmic Magnetic Fields
2022
- December 2022 - Where are you, HESS J1652−462?
- November 2022 - 20th anniversary
- October 2022 - Home office for telescope operators
- September 2022 - Probing thermal-relic dark matter with the Inner Galaxy Survey
- August 2022: The biggest cluster blows an energetic bubble
- July 2022: Moonlight observations with H.E.S.S.
- June 2022: MRC 0910-208: A moderate extremist
- May 2022: The beginnings of H.E.S.S.
- April 2022: Filming the evolution of a recurrent nova in the very-high-energy domain
- March 2022: The latest news from the new star of 1604
- February 2022: Caught in the Act: AGN flares are everywhere
- January 2022: Hunting for the gamma-ray counterparts to binary black hole mergers
2021
- December 2021: HESS J0632+057: from discovery to detailed exploration
- November 2021: HESS J1930+188: The high energy side of the Bull's Eye Pulsar Wind Nebula
- October 2021: Unveiling new H.E.S.S. sources
- September 2021: N132D: a cosmic-ray marathoner
- August 2021: An active proton PeVatron hiding inside HESS J1702-420?
- July 2021: Tracking UFOs with H.E.S.S.
- June 2021: GRB 190829A: A long-lasting explosion offers surprises
- May 2021: A large armada targets famous M87
- April 2021: Mini Black Holes in the Atmosphere?
- March 2021: 30 Doradus C - The high-energy supershell
- February 2021: Striking a jet - and pinpointing the flame
- January 2021: Dark matter search in the dwarf Irregular dalaxy "WLM"
2020
- December 2020: The bright extreme BL Lac object HESS J1958-301
- November 2020: The black hole in the Galactic Centre
- October 2020: A new camera on the large telescope of H.E.S.S.
- September 2020: 20th anniversary of H.E.S.S. groundbreaking
- August 2020: MAXI J1820+070: A powerful outburst launching superluminal jets in a black bole binary
- July 2020: The kiloparsec-sized VHE gamma-ray emission of Centaurus A
- June 2020: SGR J1935+2154: An active magnetar now linked to repeating fast radio bursts.
- May 2020: ATOM: A trailer, a trigger and a tug for H.E.S.S.
- April 2020: Extended emission around the Geminga pulsar
- March 2020: Gamma-ray quasars from the bright to the faint end: PKS 0736+017
- February 2020: A fresh look at the galactic plane
- January 2020: The many-faced quasar PKS 1510-089
2019
- December 2019: GRB 180720B: The First Gamma-Ray Burst detected in the Very-High-Energy band
- November 2019: A Gamma-ray view of Radio Galaxies
- October 2019: GW170817: Revisiting the site of a binary neutron star merger
- September 2019: The second pulsar detected by H.E.S.S. in the 10-100 GeV energy range
- August 2019: Dark matter search towards dwarf satellites of the Milky Way detected by the Dark Energy Survey
- July 2019: Core-collapse supernovae: promising candidates for PeV cosmic-ray acceleration?
- June 2019: PKS1830-211: a flaring gravitationally lensed galaxy
- May 2019: HESSJ1826-130: An extreme particle accelerator in the Galactic Plane
- April 2019: The Long Term Variability of the Blazar Markarian 501
- March 2019: The H.E.S.S. I legacy extragalactic survey
- February 2019: First observation of a UAV with IACTs
- Januar 2019: 3C279 - the monster in Virgo is back!
2018
- December 2019: Searching for very-high-energy cosmic-ray electron sources
- November 2019: First ground-based measurement of sub-20 GeV to 100 GeV gamma-ray pulsations from the Vela pulsar
- October 2018: A Powerful Couple - Energetics of the old friend PSR B1259-63
- September 2018: Probing Lorentz symmetry at the Planck scale
- August 2018: The first hint for a cosmic-ray accelerator?
- July 2018: A joint X-ray and gamma-ray study of the Vela X pulsar wind nebula
- June 2018: The tail of Centaurus A
- May 2018: Probing particle transport in the pulsar wind nebula HESS J1825-137
- April 2018: Who are you PKS 0625-354?
- March 2018: Discovering new Supernova remnants with H.E.S.S.
- February 2018: Search for dark matter lines towards the Galactic halo
- January 2018: Revisiting the paradigm of hadronic acceleration in NGC 253
2017
- December 2017: Variable TeV emission from the most luminous gamma-ray binary
- November 2017: GW 170817: Follow-up observations of a neutron-star neutron-star merger
- October 2017: The Crab Nebula is Extended
- September 2017: Probing local sources with high energy cosmic ray electrons
- August 2017: Eta Carinae
- July 2017: 3C 279: The monster is seen again and it is devious
- June 2017: A Deeper Look into the Supernova Remnant Vela Junior
- May 2017: HESS J1912+101: A new TeV supernova remnant candidate without any counterpart (yet)
- April 1, 2017: Serendipitous discovery of likely alien distress call
- March 2017: New eyes for the H.E.S.S. I cameras
- February 2017: HESS J1534-571: A new TeV supernova remnant shell discovered with H.E.S.S.
- January 2017: H.E.S.S. observations of blazars within a new energy range
2016
- December 2016: In a silent way: HESS J1741-302
- November 2016: Final chapter of the 130 GeV line-like signal story
- October 2016: PKS 2155-304: a Beethoven among blazars
- September 2016: An Old Friend: Supernova Remnant RX J1713.7-3946
- July 2016: A new quasar in the very-high-energy sky discovered with H.E.S.S. II
- June 2016: A Proton Accelerator? W49B Revisited
- May 2016: A mysterious gamma-ray source powered by a Magnetar?
- April 2016: 11 years later: Discovery of a Cosmic PeVatron in the Galactic Center
- March 2016: Dark Matter Search In The Inner Galactic Halo
- February 2016: RCW 86 - the fifth supernova remnant shell
- January 2016: The Completed TeV Galactic Plane Survey
2013
- September 2013: HESS J1640−465 – an exceptionally luminous TeV gamma-ray supernova remnant
- August 2013: A photon is a photon is an axion is a photon
- July 2013: The source HESS J1356-645 associated with the young and energetic pulsar PSR J1357-6429
- June 2013: Very high energy gamma rays from the other side of the Milky-Way: SNR G349.7+0.2
- May 2013: HESS J1427-608 and - finally - its X-ray counterpart
- April 2013: Disentangling TeV emission in complex regions: the Scutum arm tangent
- March 2013: The powerful blazar PKS 1440-389
- February 2013: The distant BL Lac PKS 0301-243
- January 2013: A somewhat different kind of detection: "Seeing" the extragalactic background light
2012
- December 2012: The Crab Nebula seen with the H.E.S.S. II telescope
- November 2012: HESS J1458-608, a pulsar wind nebula associated with the Fermi pulsar PSR J1459-60
- October 2012: The new source HESS J1641-463 emerging near HESS J1640-465
- September 2012: 10th Anniversary: The H.E.S.S. gamma ray sky
- August 2012: The currently most distant source of very high energy gamma rays
- July 2012: High and very high energy gamma-rays from the blazar SHBL J001355.9-185406
- June 2012: Discovery of very high energy gamma rays from the quasar PKS 1510-089
- May 2012: Emission from the region of SNR G22.7-0.2
- April 1, 2012: A mysterious gamma ray signal
- March 2012: The Active Galactic Nucleus 1RXS J101015.9-311909
- February 2012: An extended source of TeV gamma rays towards the magnetar SGR1806-20
- January 2012: The "serendipitous" discovery of the blazar 1ES 1312-423
2011
- December 2011: The most distant stellar source of very high energy gamma rays
- November 2011: A pulsar wind nebula in SNR G327.1-1.1
- October 2011: Gamma-ray emission from AP Librae
- September 2011: HESS J0632+057 identified as TeV binary
- August 2011: Gamma rays from supernova G15.4+0.1
- July 2011: Discovery of gamma-ray emission from the blazar 1ES 0414+009
- June 2011: HESS J1831-098, a new gamma-ray discovered pulsar wind nebula?
- May 2011: Gamma-ray emission from the direction of the globular cluster Terzan 5
- April 2011: VHE gamma rays from the vicinity of the supernova remnant G318.2+0.1
- March 2011: Very high energy gamma rays from the blazar PKS 0447-439
- February 2011: HESS J1852-000 near the supernova remnant Kes 78
- January 2011: The incredible shrinking source HESS J1303-631
2010
- December 2010: Very high energy gamma rays from the W49 region
- November 2010: HESS J1943+213: an extreme BL Lac object?
- October 2010: A new SNR shell resolved in TeV gamma rays
- September 2010: A multi-wavelength view of HESS J1626-490
- August 2010: Yet another gamma-ray source in the Westerlund 2 field of view
- July 2010: Probing quantum gravity with TeV Gamma Rays
- June 2010: HESS discovers gamma rays from the Active Galaxy PKS 0548-322
- May 2010: More about HESS J1708-410
- April 2010: A new gamma-ray source emerging near the Westerlund 2 stellar cluster
- March 2010: Vela X revisited
- February 2010: Forgotten sources? HESS J1634-472 and HESS J1632-478
- January 2010: News about HESS J1858-020
2009
- December 2009: Five years later: VHE emission from the Galactic Center
- November 2009: Discovery of VHE Gamma-Ray Emission of a Remarkable Young Composite SNR
- October 2009: A Novel Type of Source: the Starburst Galaxy NGC 253
- September 2009: HESS J1507-622 - an Unidentified Source off the Galactic Plane
- August 2009: An Extended Source of Gamma Rays near PSR B1706-44
- June 2009: Very High Energy Gamma Ray Emission from the Direction of the W43 Star Forming Region
- June 2009: The Westerlund 1 Star Cluster
- May 2009: A VHE Gamma Ray Source in the W51 Region: HESS J1923+141
- April 2009: Very High Energy Gamma-Rays from Centaurus A
- March 2009: HESS J1731-347 - an Old Supernova Remnant?
- February 2009: Another First from PKS 2155-304: a Joint H.E.S.S. - Fermi Campaign
- January 2009: HESS J1809-193: more than one PWN?
2008
- December 2008: Cosmic Ray Electrons Measured with H.E.S.S.
- November 2008: HESS J1503-582 - a "Forbidden Velocity Wing"?
- October 2008: Gamma Rays from the Composite Supernova Remnant Kes 75
- September 2008: A Closer Look at the Unidentified Source HESS J1614-518
- August 2008: At last - Supernova 1006
- July 2008: HESS J1857+026 - Another VHE Gamma-Ray Source demystified?
- June 2008: The Supernova Remnant CTB 37A
- May 2008: HESS J1837−069 and its Pulsar
- April 2008: The Remnant CTB 37B Viewed in X-Rays and Gamma Rays
- March 2008: Gamma-Rays from the BL Lac Object RGB J0152+017
- February 2008: A New Companion for the Lonely Crab? Gamma Rays from G21.5-0.9
- January 2008: Oops - HESS J1745-303
2007
- December 2007: The Starry TeV Sky
- November 2007: Probing Extragalactic Background Light with 1ES 0229+200
- October 2007: Gamma Rays from the Distant BL Lac 1ES 0347-121
- September 2007: PKS 2155-304 - Photons from a Hotter Hell
- August 2007: Confirming MGRO 1908+06
- July 2007: The Supernova Remnant RCW 86
- June 2007: PWN Abundance - HESS J1718-385
- May 2007: HESS J1912+1011 - Yet Another Pulsar Wind Nebula?
- April 2007: Gamma Rays from W28 - an Old Supernova Remnant and Molecular Clouds
- March 2007: HESS J1640-465 - A Pulsar Wind Nebula?
- February 2007: A Point-Like Gamma-Ray Source in Monoceros
- January 2007: HESS J1616-508 - Evidence for a Dark Particle Accelerator
2006
- December 2006: A Novel Type of Source? Gamma Rays from the Vicinity of the Wolf-Rayet Binary WR 20a
- November 2006: TeV Gamma Rays from the Core of M87
- October 2006: A Different Type of "source" - Iron Nuclei among Cosmic Rays
- September 2006: HESS J1804-216 - Supernova Remnant or Pulsar Wind Nebula?
- August 2006: One Year Later - LS 5039 Revisited
- July 2006: HESS J1702-420 - Mystery Source or Pulsar Wind?
- June 2006: HESS J1834-087 - Another Supernova Remnant?
- May 2006: Vela X - a Cosmic Accelerator 900 Light Years from Earth
- April 2006: The Wings of the Kookaburra
- March 2006: High Energy Gamma Rays from the Galactic Center Ridge
- February 2006: PG 1553+113: the Mystery AGN
- January 2006: Multiwavelength Observations of H2356-309
2005
- December 2005: The Blazar 1ES 1101-232 and the Gamma Ray Horizon
- November 2005: PKS 2005-489 - the first new AGN discovered by H.E.S.S.
- October 2005: Markarian 421 - a Fresh Look at a Familiar Source
- September 2005: HESS J1825-137 - a Crushed Pulsar Wind Nebula?
- August 2005: Very High Energy Gamma Rays from the Microquasar LS 5039
- July 2005: HESS J1813-178 -- no longer an Unidentified TeV Source
- June 2005: The Pulsar Wind Nebula MSH 15-52
- May 2005: The Unidentified TeV Source HESS J1303-631
- April 2005: The Binary Pulsar PSR B1259-63
- March 2005: The Vela Junior Supernova Remnant
- February 2005: The Supernova Remnant G0.9+0.1
- January 2005: The Supernova Remnant RX J1713.7-3946
