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Aims. The main goal of this study is to detect the stellar overdensity associated with the Perseus arm in the anticenter direction. Methods. We used the physical parameters derived from Str\"omgren photometric data to compute the surface…

星系天体物理 · 物理学 2015-05-20 Maria Monguió , Preben Grosbøl , Francesca Figueras

There are either a near kinematic distance of 5.5 kpc or a far distance of 8.8 kpc for a Galactic supernova remnant (SNR) G32.8$-$0.1 derived by using the rotation curve of the Galaxy. Here we make sure that the remnant distance is the…

高能天体物理现象 · 物理学 2009-09-03 Jian-Wen Xu , Hui-Rong Zhang

We report the discovery of two highly dispersed pulsars in the direction of the Galactic Centre made during a survey at 3.1 GHz with the Parkes radio telescope. Both PSRs J1745-2912 and J1746-2856 have an angular separation from the…

天体物理学 · 物理学 2009-11-11 Simon Johnston , M. Kramer , D. R. Lorimer , A. G. Lyne , M. McLaughlin , B. Klein , R. N. Manchester

We report on VLBA astrometry and CXO imaging of PSR J0538+2817 in the supernova remnant S147. We measure a parallax distance of $1.47^{+0.42}_{-0.27}$kpc along with a high-precision proper motion, giving a transverse velocity…

天体物理学 · 物理学 2008-11-26 C. -Y. Ng , Roger W. Romani , Walter F. Brisken , Shami Chatterjee , Michael Kramer

The supernova remnant G0.9+0.1 has long been inferred to contain a central energetic pulsar. In observations with the NRAO Green Bank Telescope at 2 GHz, we have detected radio pulsations from PSR J1747-2809. The pulsar has a rotation…

星系天体物理 · 物理学 2009-08-05 F. Camilo , S. M. Ransom , B. M. Gaensler , D. R. Lorimer

Integrated ground-based and HST optical studies of isolated neutron stars have provided important independent datasets in the determination of emission activity, particularly in the fitting of anticipated Rayleigh-Jeans extrapolations from…

天体物理学 · 物理学 2007-05-23 A. Golden , A. Shearer

We present results from Chandra and XMM-Newton observations of the radio pulsar B1046-58. A high-resolution spatial analysis reveals an asymmetric pulsar wind nebula (PWN) ~6"x11" in size. The combined emission from the pulsar and its PWN…

天体物理学 · 物理学 2011-02-11 M. E. Gonzalez , V. M. Kaspi , M. J. Pivovaroff , B. M. Gaensler

We conducted a study of the environment around the supernova remnant CTB109. We found that the SNR is part of a large complex of HII regions extending over an area of 400 pc along the Galactic plane at a distance of about 3 kpc at the…

天体物理学 · 物理学 2009-11-07 Roland Kothes , Bulent Uyaniker , Aylin Yar

There is a growing community of astronomers presenting evidence that the pulsar wind nebula 3C58 is much older than the connection with the historical supernova of A.D 1181 would indicate. Most of the strong evidence against a young age for…

星系天体物理 · 物理学 2010-10-25 Roland Kothes

We present Australia Telescope Compact Array (ATCA) observations of the supernova remnant (SNR) G296.8-00.3. A 1.3-GHz continuum image shows the remnant to have a complex multi-shelled appearance, with an unusual rectangular strip running…

天体物理学 · 物理学 2009-10-30 B. M. Gaensler , R. N. Manchester , A. J. Green

Supernova remnant (SNR) detection along the Galactic plane poses a number of challenges. The SNR G309.8+00.0 lies exactly on the Galactic plane, with its center coinciding with galactic latitude (b)=0 deg. In this paper we report the first…

高能天体物理现象 · 物理学 2024-10-01 Miltiadis Michailidis , Gerd Pühlhofer , Andrea Santangelo , Manami Sasaki , Werner Becker

We obtained six observations of PSR J1741-2054 using the $Chandra$ ACIS-S detector totaling $\sim$300 ks. By registering this new epoch of observations to an archival observation taken 3.2 years earlier using X-ray point sources in the…

Three supernova remnants form the CTB 37 complex: CTB 37A (G348.5+0.1, associated with the TeV $\gamma$-ray source HESS J1714-385), CTB 37B (G348.7+0.3, associated with HESS J1713-381 and the magnetar CXOU J171405.7.381031), and G348.5-0.0.…

星系天体物理 · 物理学 2015-06-03 Wenwu Tian , Denis Leahy

PSR J0855-4644 is an energetic pulsar (Edot = 1.1x10^36 erg/s, P=65 ms) discovered near the South-East rim of the supernova remnant (SNR) RX J0852.0-4622 (aka Vela Jr) by the Parkes Multibeam Survey. The position of the pulsar is in spatial…

高能天体物理现象 · 物理学 2011-09-22 F. Acero , Y. Gallant , R. Terrier , M. Renaud , J. Ballet

We have carried out high-resolution near-infrared spectroscopic observations toward 16 Galactic supernova remnants (SNRs) showing strong H$_{2}$ emission features. A dozen bright H$_{2}$ emission lines are clearly detected for individual…

星系天体物理 · 物理学 2020-11-25 Yong-Hyun Lee , Bon-Chul Koo , Jae-Joon Lee

A recent measurement of the proper motion of PSR J0908-4913 shows that it is a fast moving object at a distance of some 3 kpc. Here we present evidence that the pulsar is located at the edge of a previously unknown, filled-centre supernova…

高能天体物理现象 · 物理学 2021-09-01 Simon Johnston , Marcus Lower

We take advantage of the red clump stars to build the relation of the optical extinction (AV) and distance in each direction of supernova remnants (SNRs) with known extinction in the fourth Galactic quadrant. The distances of 9 SNRs are…

星系天体物理 · 物理学 2019-07-24 Su-Su Shan , Hui Zhu , Wen-Wu Tian , Hai-Yan Zhang , Ai-Yuan Yang , Meng-Fei Zhang

The recently discovered transitional millisecond pulsar system J1023+0038 exposes a crucial evolutionary phase of recycled neutron stars for multiwavelength study. The system, comprising the neutron star itself, its stellar companion, and…

More than 90% of the known Milky Way supernova remnants are within 5 degrees of the Galactic Plane. We present the discovery of the supernova remnant G181.1+9.5, a new high-latitude SNR, serendipitously discovered in an ongoing survey of…

高能天体物理现象 · 物理学 2017-01-18 R. Kothes , P. Reich , T. J. Foster , W. Reich

We report preliminary results of the analysis of the proper motion of the bright radio pulsar B1727$-$47. Using archival Parkes timing data, as well as original and archival ATCA interferometry observations, we, for the first time,…

高能天体物理现象 · 物理学 2017-12-21 P. Shternin , M. Yu , A. Kirichenko , Yu. Shibanov , A. Danilenko , M. Voronkov , D. Zyuzin