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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 (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/* 0 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, Cat. J/A+A/612/A1 HESS collaboration, Paper II 2018A&A...612A...2H HESS collaboration, Paper III 2018A&A...612A...3H HESS collaboration, Paper IV 2018A&A...612A...4H HESS collaboration, Paper V 2018A&A...612A...5H, Cat. J/A+A/612/A5 HESS collaboration, Paper VI 2018A&A...612A...6H, Cat. J/A+A/612/A6 HESS collaboration, Paper VII 2018A&A...612A...7H, Cat. J/A+A/612/A7 HESS collaboration, Paper VIII 2018A&A...612A...8H HESS collaboration, Paper IX 2018A&A...612A...9H HESS collaboration, Paper X 2018A&A...612A..10H HESS collaboration, Paper XI 2018A&A...612A..11H HESS collaboration, Paper XII 2018A&A...612A..12H HESS collaboration, Paper XIII 2018A&A...612A..13H MAGIC collaboration, Paper XIV 2018A&A...612A..14M
(End) Patricia Vannier [CDS] 16-Mar-2018
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