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HONEST Workshops: Hot Topics in High Energy Astrophysics

1–3 Dec 2020
Europe/Rome timezone

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Contribution List

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  1. 39. Welcome
    Ruben Lopez Coto (PD)
    01/12/2020, 09:00
  2. 1. Introduction to the motivations and topics of the workshop
    Jim Hinton (MPIK)
    01/12/2020, 09:05
  3. 2. HAWC results on Geminga/PSR B0656
    Dr Hao Zhou (Tsung-Dao Lee Institute & School of Physics and Astronomy)
    01/12/2020, 09:20
  4. 3. H.E.S.S. results on extended emission surrounding middle-age pulsars
    Dr Alison Mitchell (ETH Zurich)
    01/12/2020, 09:50
  5. 4. Fermi results on Geminga extended emission
    Silvia Manconi (Università degli Studi di Torino)
    01/12/2020, 10:35
  6. 5. HAWC results on other TeV halos
    Kelly Malone (Los Alamos National Laboratory)
    01/12/2020, 11:05
  7. 6. LHAASO performance and first results on extended emission from known halos
    Prof. Chen Songzhan
    01/12/2020, 11:35
  8. 29. The energy-dependent morphology of the pulsar wind nebula HESS J1825-137 seen by the Fermi-LAT: investigating its PWN / gamma-ray halo nature
    Giacomo Principe (Istituto Nazionale di Fisica Nucleare)
    01/12/2020, 13:00
  9. 30. Study of the gamma-ray emission from 3HWC J1928+178
    Armelle Jardin-Blicq (National Astronomical Research Institute of Thailand (NARIT))
    01/12/2020, 13:05
  10. 31. A 3D likelihood based approach for extended VHE source extraction
    Atreyee Sinha (LUPM, CNRS, Université de Montpellier)
    01/12/2020, 13:10
  11. 32. Follow-up study of Geminga's Contribution to the Local Positron Excess with the High Altitude Water Cherenkov Gamma-Ray Observatory
    Ramiro Torres Escobedo (HAWC)
    01/12/2020, 13:15
  12. 33. Discovery Prospects for TeV Halos and Physics Implications
    Takahiro Sudoh (University of Tokyo)
    01/12/2020, 13:20
  13. 7. Pulsar wind nebula evolution
    Dr Barbara Olmi
    02/12/2020, 15:00
  14. 10. Origin of the Turbulence generated in TeV halos
    Carmelo Evoli (Gran Sasso Science Institute)
    02/12/2020, 15:20
  15. 8. TeV halos classification as extended sources surrounding pulsars
    Tim Linden (The Ohio State University)
    02/12/2020, 15:40
  16. 9. TeV halos classified by the dominant energetics in the region
    Gwenael Giacinti (MPIK Heidelberg)
    02/12/2020, 16:00
  17. 11. On the scales of extension of Pulsar Wind Nebulae
    Dmitry Khangulyan (Rikkyo University)
    02/12/2020, 16:40
  18. 12. Extended Inverse Compton gamma-ray emission beyond PWNe
    Dr Ruoyu Liu (Nanjing University)
    02/12/2020, 17:00
  19. 14. Lessons from HAWC PWNe observations
    Prof. Stefano Profumo
    02/12/2020, 17:20
  20. 34. Radio synchrotron halos around pulsars: candidate selection and classification
    Dr Mickael Coriat (UPS/IRAP), Pierrick Martin (CNRS/IRAP)
    02/12/2020, 19:00
  21. 35. Gamma-ray halos in the HE and VHE Galactic landscape
    Pierrick Martin (CNRS/IRAP), Dr Soheila Abdollahi (CNRS/IRAP)
    02/12/2020, 19:05
  22. 17. MWL view of Halos (sub-GeV emission)
    Mattia Di Mauro (TO)
    03/12/2020, 09:00
  23. 16. Review of different codes of Cosmic Ray Propagation in the Galaxy
    Elena Orlando (Istituto Nazionale di Fisica Nucleare)
    03/12/2020, 09:30
  24. 15. VHE Cosmic Ray Electrons - observations and interpretation
    Dr Kathrin Egberts
    03/12/2020, 10:00
  25. 37. Prospects with SWGO
    Ruben Lopez Coto (PD)
    03/12/2020, 11:00
  26. 18. Prospects for CTA
    Emma de Ona Wilhelmi (DESY-Zeuthen)
    03/12/2020, 11:30
  27. 38. Gamma-ray halos around pulsars: closing remarks
    Felix Aharonian (Dublin Institute for Advanced Studies)
    03/12/2020, 11:45
  28. 27. A 3D likelihood based approach for extended VHE source extraction
    Atreyee Sinha (LUPM, CNRS, Université de Montpellier)
    Experimental part: Review of the latest results

    Ground based Imaging Atmospheric Cherenkov Telescopes have proven to be very powerful in detecting very high energy gamma-ray source (>100 GeV). Nevertheless, their limited field-of-view (~2 degrees in radius) makes the detection of large emission, as for pulsar halos, quite challenging. This is due to the presence of a strong residual hadronic background which is usually statistically removed...

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  29. 22. Discovery Prospects for TeV Halos and Physics Implications
    Mr Takahiro Sudoh (University of Tokyo)
    Theoretical Models: Halo classification and mechanisms

    Milagro and HAWC observations have revealed the existence of TeV halos around nearby, relatively old pulsars. We perform population modeling of TeV halos taking into account the age dependence of halo formation. Our analysis highlights the potential importance of TeV halos in existing and future observations by HAWC, HESS, and CTA. We quantify the contributions of TeV halos to the source...

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  30. 28. Follow-up study of Geminga's Contribution to the Local Positron Excess with the High Altitude Water Cherenkov Gamma-Ray Observatory
    Mr Ramiro Torres Escobedo (HAWC)
    Experimental part: Review of the latest results

    The PAMELA, Fermi-LAT, and AMS-02 experiments measured a local excess of positrons above energies of 10 GeV. This excess has been considered to be due to dark matter interactions or the presence of nearby astrophysical sources. Here, I present preliminary results on the follow-up study of diffusion in the region of the pulsar Geminga with approximately five years of HAWC data. I implement a...

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  31. 20. Gamma-ray halos around pulsars: closing remarks
    Felix Aharonian (Dublin Institute for Advanced Studies)
  32. 13. Gamma-ray halos around SNRs and Massive Stellar Clusters - differentiation signatures from those around pulsars
    Silvia Celli (GSGC)
  33. 26. Gamma-ray halos in the HE and VHE Galactic landscape
    Dr Pierrick Martin (CNRS/IRAP)
    Theoretical Models: Halo classification and mechanisms

    The recent discovery of long-lived and large-size gamma-ray emission structures around a handful of middle-aged pulsars raised the question of their actual place in the high-energy and very-high-energy landscape, first and foremost in the Milky Way but more generally in all star-forming galaxies. If most pulsars develop such gamma-ray halos over several 100kyr, harnessing the gamma-ray...

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  34. 36. Prospects for CTA - Source confusion
    Roberta Zanin (Universitat de Barcelona)
  35. 19. Prospects with SWGO
    Ruben Lopez Coto (PD)
  36. 25. Radio synchrotron halos around pulsars: candidate selection and classification
    Dr Pierrick Martin (CNRS/IRAP)
    Theoretical Models: Halo classification and mechanisms

    The interpretation of large gamma-ray halos around middle-aged pulsars as electron/positron pairs emitting from inverse-Compton scattering of ambient photon fields naturally leads one to think about the necessary counterpart of such a system: radio synchrotron halos.
    In this contribution, we introduce some first investigations of the detectability of such radio sources in the Milky Way. We...

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  37. 24. Study of the gamma-ray emission from 3HWC J1928+178
    Armelle Jardin-Blicq (National Astronomical Research Institute of Thailand (NARIT))
    Experimental part: Review of the latest results

    The gamma-ray source 3HWC J1928+178, discovered by HAWC, is coincident with PSR J1928+1746, a 82 kyr pulsar located 4 kpc away. It has not been reported by any IACT, until the recent detection by HESS of emission from this region using an analysis adapted to extended sources.
    No counterpart in GeV gamma-rays from Fermi-LAT data or from X-ray observations has been reported so far. In this...

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  38. 23. The energy-dependent morphology of the pulsar wind nebula HESS J1825-137 seen by the Fermi-LAT: investigating its PWN / gamma-ray halo nature
    Giacomo Principe (Istituto Nazionale di Fisica Nucleare)
    Experimental part: Review of the latest results

    Taking advantage of more than 11 years of Fermi-LAT data, we perform a new and deep analysis of the pulsar wind nebula (PWN) HESS J1825–137. We present the results of the spectral analysis and of the first energy-resolved morphological study of the PWN HESS J1825-137 from 1 GeV to 1 TeV. This PWN is an archetypal system making it a perfect laboratory for studying particle transport...

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