| Canonical Name: | RX J0852.0-4622 |
| TeVCat Name: | TeV J0852-463 |
| Other Names: | Vela Junior, HESS J0852-463
PSR J0855-4644 |
| Source Type: | Shell |
| R.A.: | 08 52 00 (hh mm ss) |
| Dec.: | -46 22 00 (dd mm ss) |
| Gal Long: | 266.28 (deg) |
| Gal Lat: | -1.24 (deg) |
| Distance: | 0.2 kpc |
| Flux: | 1 (Crab Units) |
| Energy Threshold: | 1000 GeV |
| Spectral Index: | |
| Extended: | Yes |
| Size (X): | 1.00 (deg) |
| Size (Y): | 1.00 (deg) |
| Discovery Date: | 2005-02 |
| Discovered By: | CANGAROO |
| Green's Catalog: | Link |
| TeVCat SubCat: | Default Catalog |
Source Notes:
| H.E.S.S. Galactic Plane Survey (HGPS, 2018): |
| A selection of information for each of the 78 sources in the HGPS is provided in TeVCat. For full details, visit the HGPS website. |
| Name: | HESS J0852-463 |
| Source Class: | SNR |
| Identified Object: | Vela Junior |
| R.A. (J2000): | 133.00 deg (08 52 00) |
| Dec. (J2000): | -46.37 deg (-46 22 12) |
| Spatial Model: | Shell |
| Size: | 1.000 deg |
| Spectral Model: | exponentially cutoff power law |
| Integral Flux > 1 TeV: | 2.34e-11 +/- 2.35e-12 cm-2 s-1 |
| Pivot Energy, E0: | 1.00 TeV |
| Diff. Flux at E0: | 3.22e-11 +/- 1.46e-12 cm-2 s-1 TeV-1 |
| Spectral Index: | 1.81 +/- 0.08 |
| Cutoff fit param.: | 0.150 +/- 0.028 TeV-1 |
| HGPS Source Notes: | |
| | |
"This is one of the fourteen EXTERN sources in the HGPS catalog, i.e., VHE sources in the HGPS region previously detected by H.E.S.S. that were not reanalyzed
in the paper:"
- "Given the difficulties with modeling complex source morphologies, we decided to restrict the HGPS analyses to a symmetrical Gaussian model assumption and
exclude all firmly identified shell-like sources and the very complex GC region from reanalysis."
- "H.E.S.S. observations have revealed many sources with complex morphology, e.g., RX J0852.0−4622 (also known as Vela Junior), which has a very pronounced
shell-like structure (H.E.S.S. Collaboration 2018b)."
Source position and its uncertainty:
From
Aharonian et al. (2007):
- RA (J2000): 08h 52m
- Dec (J2000): -46d 22m
- no positional uncertainty information available
From
Katagiri et al. (2005):
- R.A. (J2000): 132.23deg = 08 49 00
- Dec. (J2000): -45.65deg = -45 39 00
- this was the position tracked
- no positional uncertainty information available
Source Extent:
From
Aharonian et al. (2005) &
Aharonian et al. (2007)
- radius ~1 deg
- The emission detected by HESS was over the entire remnant, at the level of about 1 Crab.
From
Katagiri et al. (2005):
- The flux detected by CANGAROO (at 12% of the crab) was primarily from the north-western rim of Vela Junior.
Source Association:
From
Fukui et al. (2017):
- "We present a new analysis of the interstellar protons toward the
TeV gamma-ray SNR RX J0852.0-4622 (G266.2−1.2, Vela Jr.). We used the
NANTEN2 12CO (J = 1-0) and ATCA & Parkes H-I datasets in order to
derive the molecular and atomic gas associated with the TeV gamma-ray
shell of the SNR."
- "A comparison with the H.E.S.S. TeV gamma rays indicates that the
interstellar protons have an average density around 100 cm−3 and shows
a good spatial correspondence with the TeV gamma rays. The total
cosmic ray proton energy is estimated to be ∼ 10e48 erg for the
hadronic gamma-ray production, which may still be an underestimate by
a factor of a few due to a small filling factor of the SNR volume by
the interstellar protons."
- "This result presents a third case, after
RX J1713.7−3946 and
HESS J1731−347, of the good spatial correspondence between the TeV
gamma-rays and the interstellar protons, lending further support for a
hadronic component in the gamma rays from young TeV gamma-ray SNRs."
From
H.E.S.S. Collaboration (2016):
- "A simple modeling using one particle population to model the SNR
emission demonstrates that both leptonic and hadronic emission
scenarios remain plausible. It is also shown that at least a part of
the shell emission is likely due to the presence of a pulsar wind
nebula around PSR J0855-4644."
- Acero et al.
(2011) and
(2012) report on the detection of an energetic pulsar,
PSR J0855-4644, near the South-East rim of this SNR, in spatial coincidence with
the enhancement in X-rays and TeV gamma rays, which could represent
its PWN
Spectral Information:
From
Paz Arribas et al. (2012):
- Spectral index: 2.22 +/- 0.06(stat) +/- 0.20(syst) for the whole remnant
- The spectral morphology was studied. "A constant index is found
across the whole SNR in the energy range from 0.5 TeV to 7 TeV,
compatible with the value of 2.11 +/- 0.05(stat) +/- 0.20 (syst)."
Seen by: H.E.S.S., CANGAROO
-
Absorption Line Observations of H3+ and CO in Sight Lines Toward the Vela and W28 Supernova Remnants
Indriolo, Nick, arXiv e-prints parXiv:2303.13689 (2023) [LINK]
-
Search for Continuous Gravitational Waves from the Central Compact Objects in Supernova Remnants Cassiopeia A, Vela Jr. and G347.3-0.5
Alessandra Papa, M. et al., arXiv e-prints parXiv:2005.06544 (2020) [LINK]
-
Simulating TeV gamma-ray morphologies of shell-type supernova remnants
Pais, Matteo and Pfrommer, Christoph, arXiv e-prints parXiv:2009.06649 (2020) [LINK]
-
Electron Acceleration in Middle-age Shell-type Gamma-Ray Supernova Remnants
Zhang, Xiao and Liu, Siming, ApJ 876 p24 (2019) [LINK]
-
Constraining the coherence scale of the interstellar magnetic field using TeV gamma-ray observations of supernova remnants
Pais, M. et al., ArXiv e-prints p (2018) [LINK]
-
Modeling of the spatially resolved non-thermal emission from the Vela Jr. supernova remnant
Sushch, I. et al., ArXiv e-prints p (2018) [LINK]
-
A Morphological Study of the Supernova Remnant RX J0852.0-4622 (Vela Jr.)
Maxted, N.I. et al., ArXiv e-prints p (2018) [LINK]
-
A detailed study of the interstellar protons toward the TeV gamma-ray SNR RX J0852.0-4622 (G266.2-1.2, Vela Jr.); a third case of the gamma-rays and ISM spatial correspondence
Fukui, Y. et al., ArXiv e-prints p (2017) [LINK]
-
Suzaku observations of the hard X-ray spectrum of Vela Jr
Takeda, S. et al., ArXiv e-prints p (2016) [LINK]
-
Deeper H.E.S.S. Observations of Vela Junior (RX J0852.0-4622): Morphology Studies and Resolved Spectroscopy
H.E.S.S. Collaboration et al., ArXiv e-prints p (2016) [LINK]
-
On the Expansion Rate, Age, and Distance of the Supernova Remnant G266.2-1.2 (Vela Jr.)
Allen, G.E. et al., ArXiv e-prints p (2014) [LINK]
-
A statistical study of Galactic SNR source spectra detected at >GeV energies
Mandelartz, M. and Becker Tjus, J., ArXiv e-prints p (2013) [LINK]
-
Nonthermal emission properties of the northwestern rim of supernova remnant RX J0852-4622
Kishishita, T. et al., ArXiv e-prints p (2013) [LINK]
-
Molecular and atomic gas in the young TeV gamma-ray SNRs RX J1713.7-3946 and RX J0852.0-4622; evidence for the hadronic production of gamma rays
Fukui, Y., ArXiv e-prints p (2013) [LINK]
-
H.E.S.S. deeper observations on SNR RX J0852.0-4622
Paz Arribas, M. et al., ArXiv e-prints p (2012) [LINK]
-
Unified model for the gamma-ray emission of supernova remnants
Yuan, Q. et al., ArXiv e-prints p (2012) [LINK]
-
A new nearby pulsar wind nebula overlapping the RX J0852.0-4622 supernova remnant
Acero, F. et al., ArXiv e-prints p (2012) [LINK]
-
A new nearby PWN overlapping the Vela Jr SNR
Acero, F. et al., ArXiv e-prints p (2011) [LINK]
-
Gamma-Ray Observations of the Supernova Remnant RX J0852.0-4622 with the Fermi LAT
Tanaka, T. et al., ArXiv e-prints p (2011) [LINK]
-
Galactic Sources of High-Energy Neutrinos: Highlights
Vissani, F. and Aharonian, F., ArXiv e-prints p (2011) [LINK]
-
Search for broad absorption lines in spectra of stars in the field of supernova remnant RX J0852.0-4622 (Vela Jr.)
Iyudin, A.F. et al., ArXiv e-prints p (2010) [LINK]
-
Theory of cosmic ray and gamma-ray production in the supernova remnant RX J0852.0-4622
Berezhko, E.G. et al., ArXiv e-prints p (2009) [LINK]
-
The Slow X-Ray Expansion of the Northwestern Rim of the Supernova Remnant RX J0852.0-4622
Katsuda, S. et al., ArXiv e-prints 803 p (2008) [LINK]
-
On the Very-High-Energy Gamma Ray Spectra from Typical Supernovae Remnants
Shurtleff, R., ArXiv e-prints 807 p (2008) [LINK]
-
A New Model For Vela Jr. Supernova Remnant
Telezhinsky, I., ArXiv e-prints p (2008) [LINK]
-
H.E.S.S. Observations of the Supernova Remnant RX J0852.0-4622: Shell-Type Morphology and Spectrum of a Widely Extended Very High Energy Gamma-Ray Source
Aharonian, F. et al., ApJ 661 p236-249 (2007) [LINK]
-
Detection of TeV gamma-ray emission from the shell-type supernova remnant RX J0852.0-4622 with HESS
Aharonian, F. et al., A&A 437 pL7-L10 (2005) [LINK]
-
Detection of Gamma Rays around 1 TeV from RX J0852.0-4622 by CANGAROO-II
Katagiri, H. et al., ApJ 619 pL163-L166 (2005) [LINK]
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