Difference between revisions of "Galactic Working Group"
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* Link: [[Geminga | Project Webpage]] | * Link: [[Geminga | Project Webpage]] | ||
Revision as of 12:05, 30 September 2024
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Introduction
The Galactic Working Group focuses on the spectral and morphological study of Galactic gamma-ray sources and their time properties at VHE gamma-rays.
Current Coordinators: Jakub Jurysek (Leader), Heide Costantini (Deputy)
Past Coordinators: Pol Bordas, Ruben Lopez-Coto
Channels
Mailing list: CTA sharepoint
Slack channel: CTA North Slack workspace
Meetings
Ongoing Projects
RS Oph
- PI: Team:
- Abstract:
- Link: Project Webpage
Galactic Center
- PI: Team:
- Abstract:
- Link: Project Webpage
Crab Nebula Performance
- PI: Abelardo Moralejo, Rubén López-Coto
- Team: Abelardo Moralejo, Rubén López-Coto, Thomas Vuillaume, Seiya Nozaki, Daniel Morcuende
- Abstract:
CTA (Cherenkov Telescope Array) is the next generation ground-based observatory for gamma-ray astronomy at very-high energies. The Large-Sized Telescope prototype (LST-1) is located at the Northern site of CTA, on the Canary Island of La Palma. LSTs are designed to provide optimal performance in the lowest part of the energy range covered by CTA, down to ≃20 GeV. LST-1 started performing astronomical observations in November 2019, during its commissioning phase, and it has been taking data since then. We present the first LST-1 observations of the Crab Nebula, the standard candle of very-high energy gamma-ray astronomy, and use them, together with simulations, to assess the basic performance parameters of the telescope. The data sample consists of around 36 hours of observations at low zenith angles collected between November 2020 and March 2022. LST-1 has reached the expected performance during its commissioning period - only a minor adjustment of the preexisting simulations was needed to match the telescope behavior. The energy threshold at trigger level is estimated to be around 20 GeV, rising to ≃30 GeV after data analysis. Performance parameters depend strongly on energy, and on the strength of the gamma-ray selection cuts in the analysis: angular resolution ranges from 0.12 to 0.40 degrees, and energy resolution from 15 to 50%. Flux sensitivity is around 1.1% of the Crab Nebula flux above 250 GeV for a 50-h observation (12% for 30 minutes). The spectral energy distribution (in the 0.03 - 30 TeV range) and the light curve obtained for the Crab Nebula agree with previous measurements, considering statistical and systematic uncertainties. A clear periodic signal is also detected from the pulsar at the center of the Nebula.
- Link: Project Webpage
Crab Pulsar
- PI: Team:
- Abstract:
- Link: Project Webpage
Boomerang SNR
- PI: Team: F. Cassol
- Abstract:
- Link: Project Webpage
T CrB
- PI: Team:
- Abstract:
- Link: Project Webpage
Geminga Pulsar
- PI: Team: Giulia Brunelli, Alvaro MAs-Aguilar, Paul K. H. Yeung, Giovanni Ceribella, Ruben Lopez-Coto, Marcos Lopez-Moya
- Abstract:
- Link: Project Webpage
SGR 1935+2154
- PI: Team:
- Abstract:
- Link: Project Webpage
SN 2023ixf
- PI: Alicia López-Oramas; Team: Arnau Aguasca-Cabot, Alessandro Carosi, Giorgio Pirola
- Abstract: Core-collapse SN that exploded in May 2023
- Link: Project Webpage
SN 2024bch
- PI: Alicia López-Oramas; Team: Arnau Aguasca-Cabot, Alessandro Carosi, Andrea Simognini
- Abstract: CCSNe triggered via Galactic ToO. LST-1 only project
- Link: Project Webpage
Cygnus X North region
- PI: Team:
- Abstract:
- Link:
Publications
Observed Galactic Sources
Full up-to-date list of all observed sources: Sources observed with LST-1
Sources with total integration time > 5 hours (updated: 17 Jun 2024):
Crab: 380.0 hours, LHAASO J2108+5157: 92.6 hours, Geminga: 77.6 hours, G106.3+2.7: 72.5 hours, GalacticCenter: 56.6 hours, SN_2023ixf: 46.2 hours, Cygnus_XNorth: 35.6 hours, PSR J2021+3651: 35.3 hours, LHAASO J1956+2845: 32.7 hours, SGR 1935+2154: 31.8 hours, LHAASO J0341+5258: 28.7 hours, SDSS J1430+2303: 28.2 hours, LS I +61 303: 26.2 hours, V4641: 17.6 hours, SN2024bch: 16.0 hours, Nova_RS_Oph: 15.0 hours, PSR J2032+4127: 14.3 hours, OffCrab: 11.6 hours, U Sco: 10.9 hours, 1LHAASO_J1906+0712: 7.4 hours, G17.8+16.7: 7.2 hours, PSR J1402+13: 5.7 hours, WR140: 5.7 hours, GalCenter_field1: 5.6 hours, GalCenter_field2: 5.1 hours,
LST Galactic Proposals
LST-1 Galactic Proposals Cycle I (2023)
LST-1 Galactic Proposals Cycle II (2024)
Cycle II Proposals - accumulated hours (September 2024)
Conferences
Please refer to the LSTCOS webpage for a list of upcoming conferences attended by LST members.
Relevant LST-GAL arXiv's (per month)
May 2023: File:May2023.pdf
June-July 2023: File:June-July2023.pdf
July - September 2023: File:July-September2023.pdf
September - October 2023: File:September-October2023.pdf
February - March 2024: File:Papers feb march2024.pdf
March - April 2024: File:Papers march april.pdf
May - June 2024: File:Papers may june2024.pdf
June - July 2024: File:Papers june july2024.pdf
August - September 2024: File:Papers aug sep2024.pdf
Useful Tools
- Coordinate converter http://heasarc.gsfc.nasa.gov/cgi-bin/Tools/convcoord/convcoord.pl
- Distance converter http://www.convertworld.com/en/length/Parsec.html
- Energy/frequency/wavelength converter http://heasarc.gsfc.nasa.gov/cgi-bin/Tools/energyconv/energyConv.pl
- A Date/Time Conversion Utility http://heasarc.gsfc.nasa.gov/cgi-bin/Tools/xTime/xTime.pl
- Flux/count rate converter http://heasarc.gsfc.nasa.gov/Tools/w3pimms.html
- Catalog of TeV source http://tevcat.uchicago.edu/
- Publication of HESS, MAGIC and VERITAS
- To calculate source observability (you may have to introduce LST-1 coordinates 28.76195, -17.89005) http://www.magic.iac.es/scheduler/ or https://www.mpi-hd.mpg.de/hfm/HESS/public/Visibility.html
