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The association between the Pencil nebula (RCW 37, NGC 2736), the Vela X-ray fragment D/D' and the recently discovered new X-ray supernova remnant (RX J0852.0-4622) in Vela is investigated. Recently published Chandra images of D/D' are…

天体物理学 · 物理学 2009-11-07 M. P. Redman , J. Meaburn , M. Bryce , D. J. Harman , T. J. O'Brien

An analysis of Chandra ACIS data for two relatively bright and narrow portions of the northwestern rim of G266.2-1.2 (a.k.a. RX J0852.0-4622 or Vela Jr.) reveal evidence of a radial displacement of 2.40 +/- 0.56 arcsec between 2003 and…

高能天体物理现象 · 物理学 2015-06-23 G. E. Allen , K. Chow , T. DeLaney , M. D. Filipovic , J. C. Houck , T. G. Pannuti , M. D. Stage

We consider Vela Jr. as being the old Supernova Remnant (SNR) at the beginning of the transition from adiabatic to radiative stage of evolution. According to our model, Vela Jr. is situated outside Vela SNR at the distance of 600 pc and its…

天体物理学 · 物理学 2015-05-13 Igor Telezhinsky

Vela Jr. is one of the youngest and likely nearest among the known galactic supernova remnants (SNRs). Discovered in 1997 it has been studied since then at quite a few wavelengths, that spread over almost 20 decades in energy. Here we…

天体物理学 · 物理学 2007-05-23 A. F. Iyudin , B. Aschenbach , V. Burwitz , K. Dennerl , M. Freyberg , F. Haberl , M. Filipovic

Aim: We observed the center of the supernova remnant Vela Jr in radio continuum in order to search for a counterpart to the compact central X-ray source CXOU J085201.4-461753, possibly a neutron star candidate which could be the remnant of…

天体物理学 · 物理学 2009-11-11 E. M. Reynoso , G. Dubner , E. Giacani , S. Johnston , A. J. Green

We conduct a multi-wavelength morphological study of the Galactic supernova remnant RXJ0852.0-4622 (also known as Vela Jr., Vela Z and G266.2-1.2). RX J0852.0-4622 is coincident with the edge of the larger Vela supernova remnant causing…

Vela Jr. (RX J0852.0$-$4622) is one of just a few known supernova remnants (SNRs) with a resolved shell across the whole electromagnetic spectrum from radio to very-high-energy ($>100$ GeV; VHE) gamma-rays. Its proximity and large size…

高能天体物理现象 · 物理学 2018-10-31 Iurii Sushch , Robert Brose , Martin Pohl

The Vela supernova remnant complex is a region containing at least three supernova remnants: Vela, Puppis A, and Vela Jr. With the launch of the spectro-imaging X-ray telescope eROSITA on board the Spectrum Roentgen Gamma (SRG) mission, it…

A galactic supernova remnant (SNR) Vela Jr. (RX J0852.0$-$4622, G266.6$-$1.2) shows sharp filamentary structure on the north-western edge of the remnant in the hard X-ray band. The filaments are so smooth and located on the most outer side…

天体物理学 · 物理学 2009-11-11 Aya Bamba , Ryo Yamazaki , Junko S. Hiraga

The discovery of the nearest young supernova remnant RXJ0852-4622/GROJ0852-4642 in the Galaxy by ROSAT and COMPTEL has been reported recently. Age and distance are determined to ~680 years and ~200 pc by the X-ray diameter and the gamma-ray…

天体物理学 · 物理学 2007-05-23 Bernd Aschenbach , Anatoli F. Iyudin , Volker Schoenfelder

Supernova Remnants (SNRs) are believed to be acceleration sites of Galactic cosmic rays. Therefore, deep studies of these objects are instrumental for an understanding of the high energy processes in our Galaxy. RX J0852.0-4622, also known…

高能天体物理现象 · 物理学 2019-08-14 Manuel Paz Arribas , Ullrich Schwanke , Iurii Sushch , Nukri Komin , Fabio Acero , Stefan Ohm

We show that (1) the newly discovered supernova remnant (SNR), GRO J0852--4642/RX J0852.0--4622, was created by a core-collapse supernova of a massive star, and (2) the same supernova event which produced the $^{44}$Ti detected by COMPTEL…

天体物理学 · 物理学 2009-10-31 Wan Chen , Neil Gehrels

Recent observations by the ROSAT X-ray satellite of the Vela supernova remnant have revealed, in addition to the previously identified compact nebula, a nearly circular emitting region with a radius of about 4 degrees. The Vela pulsar is…

天体物理学 · 物理学 2007-05-23 A. Loeb , F. A. Rasio , J. Shaham

Central Compact Objects (CCOs), neutron stars found near the centre of some Supernova Remnants (SNRs), have been almost exclusively studied in X-rays and are thought to lack the wind nebulae typically seen around young, rotation-powered…

The X-ray source CXO\, J085201.4$-$461753in the few kyr-old Vela Jr. supernova remnant (G266.2-1.2) belongs to the peculiar class of isolated neutron stars dubbed "Central Compact Objects" (CCOs). At variance with the other CCOs, which are…

高能天体物理现象 · 物理学 2019-05-08 R. P. Mignani , A. De Luca , S. Zharikov , W. Hummel , W. Becker , A. Pellizzoni

Supernova remnants (SNRs) are widely considered to be sites of Galactic cosmic ray (CR) acceleration. Vela is one of the nearest Galactic composite SNRs to Earth accompanied by the Vela pulsar and its pulsar wind nebula (PWN) Vela X. The…

星系天体物理 · 物理学 2015-06-18 Iurii Sushch , Bohdan Hnatyk

We present deep H-alpha images of portions of the X-ray bright but optically faint Galactic supernova remnant G156.2+5.7, revealing numerous and delicately thin nonradiative filaments which mark the location of the remnant's forward shock.…

高能天体物理现象 · 物理学 2016-08-03 Satoru Katsuda , Masaomi Tanaka , Tomoki Morokuma , Robert Fesen , Dan Milisavljevic

X-ray observations have unveiled the existence of enigmatic point-like sources at the center of young (a few kyrs) supernova remnants. These sources, known as Central Compact Objects (CCOs), are thought to be neutron stars produced by the…

天体物理学 · 物理学 2009-11-13 R. P. Mignani , A. De Luca , S. Zaggia , D. Sester , A. Pellizzoni , S. Mereghetti , P. A. Caraveo

Energetic pulsars can be embedded in a nebula of relativistic leptons which is powered by the dissipation of the rotational energy of the pulsar. The object PSR J0855-4644 is an energetic and fast-spinning pulsar (Edot = 1.1x10^36 erg/s,…

高能天体物理现象 · 物理学 2015-06-12 F. Acero , Y. Gallant , J. Ballet , M. Renaud , R. Terrier

Observations in all electromagnetic bands show that many supernova remnants (SNRs) have a very aspherical shape. This can be the result of asymmetries in the supernova explosion or a clumpy circumstellar medium. We study the generation of…

太阳与恒星天体物理 · 物理学 2015-06-22 M. Obergaulinger , A. Iyudin , E. Müller , G. F. Smoot
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