J/A+A/612/A7 Vela Junior (RX J0852.0-4622) HESS image (HESS+, 2018)
Deeper H.E.S.S. observations of Vela Junior (RX J0852.0-4622):
Morphology studies and resolved spectroscopy.
H.E.S.S. Collaboration,
Abdalla H., Abramowski A., Aharonian F., Ait Benkhali F., Akhperjanian A.G.,
Andersson T., Anguener E.O., Arakawa M., Arrieta M., Aubert P., Backes M.,
Balzer A., Barnard M., Becherini Y., Becker Tjus J., Berge D., Bernhard S.,
Bernloehr K., Blackwell R., Boettcher M., Boisson C., Bolmont J., Bordas P.,
Bregeon J., Brun F., Brun P., Bryan M., Buechele M., Bulik T., Capasso M.,
Carr J., Casanova S., Cerruti M., Chakraborty N., Chalme-Calvet R.,
Chaves R.C.G., Chen A., Chevalier J., Chretien M., Coffaro M.,
Colafrancesco S., Cologna G., Condon B., Conrad J., Cui Y., Davids I.D.,
Decock J., Degrange B., Deil C., Devin J., deWilt P., Dirson L.,
Djannati-Atai A., Domainko W., Donath A., Drury L.O'C., Dutson K., Dyks J.,
Edwards T., Egberts K., Eger P., Ernenwein J.-P., Eschbach S., Farnier C.,
Fegan S., Fernandes M.V., Fiasson A., Fontaine G., Foerster A., Funk S.,
Fuessling M., Gabici S., Gajdus M., Gallant Y.A., Garrigoux T., Giavitto G.,
Giebels B., Glicenstein J.F., Gottschall D., Goyal A., Grondin M.-H.,
Hahn J., Haupt M., Hawkes J., Heinzelmann G., Henri G., Hermann G.,
Hervet O., Hinton J.A., Hofmann W., Hoischen C., Holler M., Horns D.,
Ivascenko A., Iwasaki H., Jacholkowska A., Jamrozy M., Janiak M.,
Jankowsky D., Jankowsky F., Jingo M., Jogler T., Jouvin L.,
Jung-Richardt I., Kastendieck M.A., Katarzynski K., Katsuragawa M., Katz U.,
Kerszberg D., Khangulyan D., Khelifi B., Kieffer M., King J., Klepser S.,
Klochkov D., Kluzniak W., Kolitzus D., Komin Nu., Kosack K., Krakau S.,
Kraus M., Krueger P.P., Laffon H., Lamanna G., Lau J., Lees J.-P.,
Lefaucheur J., Lefranc V., Lemiere A., Lemoine-Goumard M., Lenain J.-P.,
Leser E., Lohse T., Lorentz M., Liu R., Lopez-Coto R., Lypova I.,
Marandon V., Marcowith A., Mariaud C., Marx R., Maurin G., Maxted N.,
Mayer M., Meintjes P.J., Meyer M., Mitchell A.M.W., Moderski R., Mohamed M.,
Mohrmann L., Mora K., Moulin E., Murach T., Nakashima S., de Naurois M.,
Niederwanger F., Niemiec J., Oakes L., O'Brien P., Odaka H., Oettl S.,
Ohm S., Ostrowski M., Oya I., Padovani M., Panter M., Parsons R.D.,
Paz Arribas M., Pekeur N.W., Pelletier G., Perennes C., Petrucci P.-O.,
Peyaud B., Piel Q., Pita S., Poon H., Prokhorov D., Prokoph H.,
Puehlhofer G., Punch M., Quirrenbach A., Raab S., Reimer A., Reimer O.,
Renaud M., de los Reyes R., Richter S., Rieger F., Romoli C., Rowell G.,
Rudak B., Rulten C.B., Sahakian V., Saito S., Salek D., Sanchez D.A.,
Santangelo A., Sasaki M., Schlickeiser R., Schuessler F., Schulz A.,
Schwanke U., Schwemmer S., Seglar-Arroyo M., Settimo M., Seyffert A.S.,
Shafi N., Shilon I., Simoni R., Sol H., Spanier F., Spengler G., Spies F.,
Stawarz L., Steenkamp R., Stegmann C., Stycz K., Sushch I., Takahashi T.,
Tavernet J.-P., Tavernier T., Taylor A.M., Terrier R., Tibaldo L.,
Tiziani D., Tluczykont M., Trichard C., Tsuji N., Tuffs R., Uchiyama Y.,
van der Walt D.J., van Eldik C., van Rensburg C., van Soelen B.,
Vasileiadis G., Veh J., Venter C., Viana A., Vincent P., Vink J., Voisin F.,
Voelk H.J., Vuillaume T., Wadiasingh Z., Wagner S.J., Wagner P.,
Wagner R.M., White R., Wierzcholska A., Willmann P., Woernlein A.,
Wouters D., Yang R., Zabalza V., Zaborov D., Zacharias M., Zanin R.,
Zdziarski A.A., Zech A., Zefi F., Ziegler A., Zywucka N.
<Astron. Astrophys. 612, A7 (2018)>
=2018A&A...612A...7H 2018A&A...612A...7H (SIMBAD/NED BibCode)
ADC_Keywords: Gamma rays; Interstellar medium; Supernova remnants
Keywords: astroparticle physics - gamma rays: general -
acceleration of particles - cosmic rays - ISM: supernova remnants
Abstract:
We study γ-ray emission from the shell-type supernova remnant
(SNR) RX J0852.0-4622 to better characterize its spectral properties
and its distribution over the SNR.
The analysis of an extended High Energy Spectroscopic System
(H.E.S.S.) data set at very high energies (E>100GeV) permits detailed
studies, as well as spatially resolved spectroscopy, of the morphology
and spectrum of the whole RX J0852.0-4622 region. The H.E.S.S. data
are combined with archival data from other wavebands and interpreted
in the framework of leptonic and hadronic models. The joint
Fermi-LAT-H.E.S.S. spectrum allows the direct determination of the
spectral characteristics of the parent particle population in leptonic
and hadronic scenarios using only GeV-TeV data.
An updated analysis of the H.E.S.S. data shows that the spectrum of
the entire SNR connects smoothly to the high-energy spectrum measured
by Fermi-LAT. The increased data set makes it possible to demonstrate
that the H.E.S.S. spectrum deviates significantly from a power law and
is well described by both a curved power law and a power law with an
exponential cutoff at an energy of
Ecut=(6.7±1.2stat±1.2syst)TeV. The joint
Fermi-LAT-H.E.S.S. spectrum allows the unambiguous identification of
the spectral shape as a power law with an exponential cutoff. No
significant evidence is found for a variation of the spectral
parameters across the SNR, suggesting similar conditions of particle
acceleration across the remnant. 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.
Description:
skymap.fit:
H.E.S.S. excess skymap in FITS format of the region comprising Vela
Junior and its surroundings. The excess map has been corrected for the
gradient of exposure and smoothed with a Gaussian function of width
0.08° to match the analysis point spread function, matching the
procedure applied to derive the maps in Fig. 1.
sp_stat.txt:
H.E.S.S. spectral points and fit parameters for Vela Junior (H.E.S.S.
data points in Fig. 3 and Tab. A.2 and H.E.S.S. spectral fit
parameters in Tab. 4).
The errors in this file represent statistical uncertainties at 1 sigma
confidence level.
The covariance matrix of the fit is also included in the format:
c_11 c_12 c_13
c_21 c_22 c_23
c_31 c_32 c_33
where the subindices represent the following parameters of the
power-law with exponential cut-off (ECPL) formula in Tab. 2:
1: flux normalization (Phi0)
2: spectral index (Gamma)
3: inverse of the cutoff energy (lambda=1/Ecut)
The units for the covariance matrix are the same as for the fit
parameters.
Notice that, while the fit parameters section of the file shows E_cut
as parameter, the fit was done in lambda=1/Ecut; hence the
covariance matrix shows the values for lambda in TeV-1.
sp_syst.txt:
H.E.S.S. spectral points and fit parameters for Vela Junior (H.E.S.S.
data points in Fig. 3 and Tab. A.2 and H.E.S.S. spectral fit
parameters in Tab. 4).
The errors in this file represent systematic uncertainties at 1 sigma
confidence level.
The integral fluxes for several energy ranges are also included.
Objects:
-----------------------------------------------------
RA (2000) DE Designation(s)
-----------------------------------------------------
08 52 00 -46 22 12 Vela Junior = RX J0852.0-4622
-----------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
list.dat 75 1 Information on the fits image
fits/* . 1 Fits image
sp_stat.txt 67 35 Spectral information with statistical errors
sp_syst.txt 101 42 Spectral information with systematic errors
--------------------------------------------------------------------------------
See also:
J/A+A/612/A1 : H.E.S.S. Galactic Plane Survey (HESS+, 2018)
J/A+A/612/A5 : W49B with H.E.S.S. and Fermi-LAT (HESS+, 2018)
J/A+A/612/A6 : RX J1713.7-3946 HESS spectrum (HESS+, 2018)
Byte-by-byte Description of file: list.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 F9.5 deg RAdeg Right Ascension of center (J2000)
10- 18 F9.5 deg DEdeg Declination of center (J2000)
20- 22 I3 --- Nx Number of pixels along X-axis
24- 26 I3 --- Ny Number of pixels along Y-axis
28- 31 I4 Kibyte size Size of FITS file
33- 42 A10 --- FileName Name of FITS file, in subdirectory fits
44- 75 A32 --- Title Title of the FITS file
--------------------------------------------------------------------------------
Acknowledgements:
Manuel Paz Arribas, mapazarr(at)gmail.com
H.E.S.S. Collaboration, contact.hess(at)hess-experiment.eu
References:
HESS collaboration, Paper I 2018A&A...612A...1H 2018A&A...612A...1H, Cat. J/A+A/612/A1
HESS collaboration, Paper II 2018A&A...612A...2H 2018A&A...612A...2H
HESS collaboration, Paper III 2018A&A...612A...3H 2018A&A...612A...3H
HESS collaboration, Paper IV 2018A&A...612A...4H 2018A&A...612A...4H
HESS collaboration, Paper V 2018A&A...612A...5H 2018A&A...612A...5H, Cat. J/A+A/612/A5
HESS collaboration, Paper VI 2018A&A...612A...6H 2018A&A...612A...6H, Cat. J/A+A/612/A6
HESS collaboration, Paper VII 2018A&A...612A...7H 2018A&A...612A...7H, Cat. J/A+A/612/A7
HESS collaboration, Paper VIII 2018A&A...612A...8H 2018A&A...612A...8H
HESS collaboration, Paper IX 2018A&A...612A...9H 2018A&A...612A...9H
HESS collaboration, Paper X 2018A&A...612A..10H 2018A&A...612A..10H
HESS collaboration, Paper XI 2018A&A...612A..11H 2018A&A...612A..11H
HESS collaboration, Paper XII 2018A&A...612A..12H 2018A&A...612A..12H
HESS collaboration, Paper XIII 2018A&A...612A..13H 2018A&A...612A..13H
MAGIC collaboration, Paper XIV 2018A&A...612A..14M 2018A&A...612A..14M
(End) Patricia Vannier [CDS] 16-Mar-2018