Difference between revisions of "EGAL02"
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| [[File:Ton599_fermi_20230423.png|thumb|centre|400px|Fermi (2023-04-23 12:00 to 2023-04-24 12:00)]] | | [[File:Ton599_fermi_20230423.png|thumb|centre|400px|Fermi (2023-04-23 12:00 to 2023-04-24 12:00)]] | ||
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| + | | [[File:Ton599_20230423_srcdep_sed.png|thumb|centre|400px|SED (LST)]] | ||
| + | | [[File:Ton599_20230423_srcdep_sed_with_fermi.png|thumb|centre|400px|SED (LST + Fermi)]] | ||
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| + | |} | ||
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* 2023-05-05 (FYI, no LST observation) | * 2023-05-05 (FYI, no LST observation) | ||
Revision as of 22:55, 13 May 2023
Contents
Proposal
Proposal: EGAL02:Observations of distant bright FSRQs in active states
PI: Seiya Nozaki (nozaki@mpp.mpg.de)
Source: 3C454.3
RA (J2000) 343.49061685 deg
DEC (J2000) 16.14821153 deg
Source: Ton599
RA (J2000) 179.88264131 deg
DEC (J2000) 29.24550745 deg
Observational settings/limits
- original criteria to observe Ton 599
we request 50 hours of observations unless the average integral photon flux (>100 MeV) goes down below 0.5×10−6 cm−2 s−1
It seems the gamma-ray spectrum of Ton 599 is sometimes hard (<2.0) (especially since April) and variable. So even when integral photon flux above 100 MeV is below the original limit (0.5x10-6 cm-2 s-1), there is a possibility to detect this source. When the spectrum is hard enough (e.g. April 23, 2023), it is detectable for a short observation. Thus, we want to request to schedule short exposure observations (1-1.5 hours) for monitoring purposes, rather than longer exposure for less nights, when this source can be scheduled (=no collision with other higher priority tasks/sources).
Past observation
Ton 599
- 2023-01-13 (ToO)
- run 11635, 11636, 11637, 11638
- Zd=40-50, moon (~10 x dark NSB)
- 2023-01-15 (ToO)
- run 11678
- Zd~10, moon (3 x dark NSB)
- 2023-01-17 (ToO)
- run 11704, 11705, 11706, 11707
- Zd=40-50, dark
- 2023-01-18 (ToO)
- run 11718, 11720, 11721
- Zd=10-20
Performed observation
Ton 599
- 2023-04-19 (no detection)
- run 12768, 12769, 12770, 12771, 12772, 12774
- Zd=0-30, dark
- 2023-04-23 (3-5 sigma?)
- run 12832, 12833, 12834, 12835
- Zd=0-10, (almost) dark, DAQ PROBLEM (100% busy spikes)
- 2023-05-05 (FYI, no LST observation)
- 2023-05-11 (no detection)
- run 12941, 12942, 12943, 12944, 12945
Analysis
- Summary (Ton599) https://docs.google.com/presentation/d/1gaDXn9cRdHN7RWg4m9iZqNLSwOAlH4m0W2f5V8CqSI8/edit?usp=sharing
