| Canonical Name: | 2HWC J1949+244 |
| TeVCat Name: | TeV J1949+244 |
| Other Names: | 1LHAASO J1945+2424* |
| Source Type: | UNID |
| R.A.: | 19 49 40.8 (hh mm ss) |
| Dec.: | +24 27 36 (dd mm ss) |
| Gal Long: | 61.16 (deg) |
| Gal Lat: | -0.85 (deg) |
| Distance: | |
| Flux: | (Crab Units) |
| Energy Threshold: | GeV |
| Spectral Index: | 2.38 |
| Extended: | Yes |
| Size (X): | 1.00 (deg) |
| Size (Y): | 1.00 (deg) |
| Discovery Date: | 2017-02 |
| Discovered By: | HAWC |
| TeVCat SubCat: | Default Catalog |
Source Notes:
Source Position:
From
Abeysekara et al. (2017):
- R.A. (J2000): 297.42 deg (= 19h 49m 40.8s)
- Dec. (J2000): +24.46 deg (= +24d 27' 36")
- the statistical uncertainty on the position is 0.71 deg
- the systematic uncertainty on the position is 0.1 deg
Source Extent:
From
Abeysekara et al. (2017):
- "This source was discovered in the 1.0 deg radius extended search,
with a TS value of 34.9."
Spectral Properties:
From
Abeysekara et al. (2017):
- spectral index: 2.38 +/- 0.16(stat) +/- 0.2(syst)
Source Association:
From
Abeysekara et al. (2017):
"2HWC J1949+244 is a new TeV source discovered within the Galactic
Plane. The source is discovered in the 1 deg extended search, which,
given the low latitude of the source, suggests there can be an
important contribution of the Galactic diffuse emission to this
source. It is located 0.1 deg away from the unidentified Fermi-LAT
source 3FGL J1949.3+2433. The extent of 3FGL J1949.3+2433 is less than
0.1 deg, which is much smaller than the size of the search in which
2HWC J1949+244 was found. The Fermi-LAT measured spectral index of
this source is -2.8 +/- 0.2, which is slightly softer than the one
measured by HAWC. The millisecond pulsar PSR J1950+2414 is also
located near 2HWC J1949+244 (0.3deg, E-dot = 9.4 × 10e33 erg s−1,
d= 7.3 kpc, age = 3.6 Gyr). However, this source has not been detected
in X-ray or GeV (
Knispel et al. 2015)."
Seen by: HAWC, LHAASO
-
The First LHAASO Catalog of Gamma-Ray Sources
Cao, Zhen et al., ApJS 271 p25 (2024) [LINK]
-
The 2HWC HAWC Observatory Gamma Ray Catalog
Abeysekara, A.U. et al., ArXiv e-prints p (2017) [LINK]
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