HESS and Suzaku observations of the Vela X pulsar wind nebula

Abdalla, H.; Aharonian, F.; Benkhali, F. Ait; Anguner, E. O.; Arakawa, M.; Arcaro, C.; Armand, C.; Backes, M.; Barnard, M.; Becherini, Yvonne; Berge, D.; Bernloehr, K.; Blackwell, R.; Bottcher, M.; Boisson, C.; Bolmont, J.; Bonnefoy, S.; Bregeon, J.; Brun, F.; Brun, P.; Bryan, M.; Buechele, M.; Bulik, T.; Bylund, Tomas; Capasso, M.; Caroff, S.; Carosi, A.; Casanova, S.; Cerruti, M.; Chakraborty, N.; Chand, T.; Chandra, S.; Chaves, R. C. G.; Chen, A.; Colafrancesco, S.; Condon, B.; Davids, I. D.; Deil, C.; Devin, J.; deWilt, P.; Dirson, L.; Djannati-Atai, A.; Dmytriiev, A.; Donath, A.; Doroshenko, V; Drury, L. O ' C; Dyks, J.; Egberts, K.; Emery, G.; Ernenwein, J-P; Eschbach, S.; Feijen, K.; Fegan, S.; Fiasson, A.; Fontaine, G.; Funk, S.; Fuessling, M.; Gabici, S.; Gallant, Y. A.; Gate, F.; Giavitto, G.; Glawion, D.; Glicenstein, J. F.; Gottschall, D.; Grondin, M-H; Hahn, J.; Haupt, M.; Heinzelmann, G.; Henri, G.; Hermann, G.; Hinton, J. A.; Hofmann, W.; Hoischen, C.; Holch, T. L.; Holler, M.; Horns, D.; Huber, D.; Iwasaki, H.; Jacholkowska, A.; Jamrozy, M.; Jankowsky, D.; Jankowsky, F.; Jouvin, L.; Jung-Richardt, I; Kastendieck, M. A.; Katarzynski, K.; Katsuragawa, M.; Katz, U.; Khangulyan, D.; Khelifi, B.; King, J.; Klepser, S.; Kluzniak, W.; Komin, Nu; Kosack, K.; Kostunin, D.; Kraus, M.; Lamanna, G.; Lau, J.; Lemiere, A.; Lemoine-Goumard, M.; Lenain, J-P; Leser, E.; Lohse, T.; Lopez-Coto, R.; Lypova, I; Malyshev, D.; Marandon, V; Marcowith, A.; Mariaud, C.; Marti-Devesa, G.; Marx, R.; Maurin, G.; Maxted, N. , I; Meintjes, P. J.; Mitchell, A. M. W.; Moderski, R.; Mohamed, M.; Mohrmann, L.; Moore, C.; Moulin, E.; Murach, T.; Nakashima, S.; de Naurois, M.; Ndiyavala, H.; Niederwanger, F.; Niemiec, J.; Oakes, L.; O'Brien, P.; Odaka, H.; Ohm, S.; Wilhelmi, E. de Ona; Ostrowski, M.; Oya, I; Panter, M.; Parsons, R. D.; Perennes, C.; Petrucci, P-O; Peyaud, B.; Piel, Q.; Pita, S.; Poireau, V; Noel, A. Priyana; Prokhorov, D. A.; Prokoph, H.; Puehlhofer, G.; Punch, Michael; Quirrenbach, A.; Raab, S.; Rauth, R.; Reimer, A.; Reimer, O.; Renaud, M.; Rieger, F.; Rinchiuso, L.; Romoli, C.; Rowell, G.; Rudak, B.; Ruiz-Velasco, E.; Sahakian, V; Saito, S.; Sanchez, D. A.; Santangelo, A.; Sasaki, M.; Schlickeiser, R.; Schussler, F.; Schulz, A.; Schutte, H.; Schwanke, U.; Schwemmer, S.; Seglar-Arroyo, M.; Senniappan, Mohanraj; Seyffert, A. S.; Shafi, N.; Shilon, I; Shiningayamwe, K.; Simoni, R.; Sinha, A.; Sol, H.; Specovius, A.; Spir-Jacob, M.; Stawarz, L.; Steenkamp, R.; Stegmann, C.; Steppa, C.; Takahashi, T.; Tavernet, J-P; Tavernier, T.; Taylor, A. M.; Terrier, R.; Tibaldo, L.; Tiziani, D.; Tluczykont, M.; Trichard, C.; Tsirou, M.; 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.; Vincent, P.; Vink, J.; Voisin, F.; Voelk, H. J.; Vuillaume, T.; Wadiasingh, Z.; Wagner, S. J.; White, R.; Wierzcholska, A.; Yang, R.; Yoneda, H.; Zaborov, D.; Zacharias, M.; Zanin, R.; Zdziarski, A. A.; Zech, A.; Ziegler, A.; Zorn, J.; Zywucka, N.

lnu.sePublikasjoner

Enkelt søk

Avansert søk -
Forskningspublikasjoner Avansert søk -
Studentoppgaver Statistikk

English Svenska Norsk

Endre søk

Referera ExporteraLink to record

Permanent link

https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-86983

Direct link

https://lnu.diva-portal.org/smash/record.jsf?pid=diva2:1339054

Referera

Referensformat

apa
ieee
modern-language-association-8th-edition
vancouver
Annet format

Fler format

Språk

de-DE
en-GB
en-US
fi-FI
nn-NO
nn-NB
sv-SE
Annet språk

Fler språk

Utmatningsformat

html
text
asciidoc
rtf

HESS and Suzaku observations of the Vela X pulsar wind nebula

Abdalla, H.

North West Univ, South Africa.

Aharonian, F.

Max Planck Inst Kernphys, Germany;Dublin Inst Adv Studies, Ireland;RAU, Armenia.

Benkhali, F. Ait

Max Planck Inst Kernphys, Germany.

Anguner, E. O.

Aix Marseille Univ, France.

Vise andre og tillknytning

2019 (engelsk)Inngår i: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, Vol. 627, s. 1-16, artikkel-id A100Artikkel i tidsskrift (Fagfellevurdert) Published

Abstract [en]

Context. Pulsar wind nebulae (PWNe) represent the most prominent population of Galactic very-high-energy gamma-ray sources and are thought to be an efficient source of leptonic cosmic rays. Vela X is a nearby middle-aged PWN, which shows bright X-ray and TeV gamma-ray emission towards an elongated structure called the cocoon. Aims. Since TeV emission is likely inverse-Compton emission of electrons, predominantly from interactions with the cosmic microwave background, while X-ray emission is synchrotron radiation of the same electrons, we aim to derive the properties of the relativistic particles and of magnetic fields with minimal modelling. Methods. We used data from the Suzaku XIS to derive the spectra from three compact regions in Vela X covering distances from 0.3 to 4 pc from the pulsar along the cocoon. We obtained gamma-ray spectra of the same regions from H.E.S.S. observations and fitted a radiative model to the multi-wavelength spectra. Results. The TeV electron spectra and magnetic field strengths are consistent within the uncertainties for the three regions, with energy densities of the order 10(-12) erg cm(-3). The data indicate the presence of a cutoff in the electron spectrum at energies of similar to 100 TeV and a magnetic field strength of similar to 6 mu G. Constraints on the presence of turbulent magnetic fields are weak. Conclusions. The pressure of TeV electrons and magnetic fields in the cocoon is dynamically negligible, requiring the presence of another dominant pressure component to balance the pulsar wind at the termination shock. Sub-TeV electrons cannot completely account for the missing pressure, which may be provided either by relativistic ions or from mixing of the ejecta with the pulsar wind. The electron spectra are consistent with expectations from transport scenarios dominated either by advection via the reverse shock or by diffusion, but for the latter the role of radiative losses near the termination shock needs to be further investigated in the light of the measured cutoff energies. Constraints on turbulent magnetic fields and the shape of the electron cutoff can be improved by spectral measurements in the energy range greater than or similar to 10 keV.

sted, utgiver, år, opplag, sider

EDP Sciences, 2019. Vol. 627, s. 1-16, artikkel-id A100

Emneord [en]

stars: winds, outflows, gamma rays: stars, radiation mechanisms: non-thermal, acceleration of particles, pulsars: individual: PSR B0833-45

HSV kategori

Forskningsprogram

Fysik, Astropartikelfysik

Identifikatorer

URN: urn:nbn:se:lnu:diva-86983DOI: 10.1051/0004-6361/201935458ISI: 000474334300001Scopus ID: 2-s2.0-85069766171OAI: oai:DiVA.org:lnu-86983DiVA, id: diva2:1339054

Tilgjengelig fra: 2019-07-25 Laget: 2019-07-25 Sist oppdatert: 2025-05-09bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekst Open Access

Scopus

Person

Becherini, Yvonne Bylund, Tomas Punch, Michael Senniappan, Mohanraj

Søk i DiVA

Av forfatter/redaktør

Becherini, Yvonne Bylund, Tomas Punch, Michael Senniappan, Mohanraj

Av organisasjonen

I samme tidsskrift

Astronomy and Astrophysics

Om emnet

Søk utenfor DiVA

Google Google Scholar

doi

urn-nbn

Totalt: 214 treff

Referera ExporteraLink to record

Permanent link

https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-86983

Direct link

https://lnu.diva-portal.org/smash/record.jsf?pid=diva2:1339054

Referera

Referensformat

apa
ieee
modern-language-association-8th-edition
vancouver
Annet format

Fler format

Språk

de-DE
en-GB
en-US
fi-FI
nn-NO
nn-NB
sv-SE
Annet språk

Fler språk

Utmatningsformat

html
text
asciidoc
rtf

v. 2.47.0

WCAG

DiVA-support

Linnéuniversitetets bibliotek

Linnaeus University Press

Publicera/Registrera