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Recent ASCA observations of G347.3-0.5, an SNR discovered in the ROSAT All-Sky Survey, reveal nonthermal emission from a region along the northwestern shell (Koyama et al. 1997). Here we report on new pointed ASCA observations of G347.3-.5…

RCW 86 is a young supernova remnant (SNR) showing a shell-type structure at several wavelengths and is thought to be an efficient cosmic-ray (CR) accelerator. Earlier \textit{Fermi} Large Area Telescope results reported the detection of…

High Energy Astrophysical Phenomena · Physics 2016-11-09 LAT Collaboration , G. Dubner , L. Duvidovich , E. Giacani , D. Green , I. Jung-Richardt , J. Vink

We present an X-ray study of the radio bright supernova remnant (SNR) 3C 397 with ROSAT, ASCA, and RXTE. A central X-ray spot seen with the ROSAT High-Resolution Imager hints at the presence of a pulsar-powered component, and gives this SNR…

We report on the detection of X-ray emission from the unusual Galactic radio source G357.7-0.1 (the "Tornado"). Observations made with the Chandra X-ray Observatory demonstrate the presence of up to three sources of X-ray emission from the…

We observed the slowly revolving pulsar 1E 161348-5055 (1E 1613, spin period of 6.67 h) in the supernova remnant RCW 103 twice with XMM-Newton and once with the Very Large Telescope (VLT). The VLT observation was performed on 2016 June 30,…

High Energy Astrophysical Phenomena · Physics 2019-06-14 P. Esposito , A. De Luca , R. Turolla , F. Coti Zelati , W. Hummel , A. Tiengo , G. L. Israel , N. Rea , R. P. Mignani , A. Borghese

We analyze more than 15 years of the \gr\ data, obtained with the Large Area Telescope (LAT) onboard {\it the Fermi Gamma-ray Space Telescope (Fermi)}, for the region of the young supernova remnant (SNR) RCW~103, since the nearby source…

High Energy Astrophysical Phenomena · Physics 2024-06-28 Yi Xing , Zhongxiang Wang , Dong Zheng

Following up on a faint detection of a near-infrared (NIR) source at the position of the X-ray thermal isolated neutron star RX J0806.4-4123, we present new Hubble Space Telescope observations in the H-band. The NIR source is unambiguously…

High Energy Astrophysical Phenomena · Physics 2018-09-24 B. Posselt , G. G. Pavlov , Ü. Ertan , S. Çalışkan , K. L. Luhman , C. C. Williams

Context. While searching the NRAO VLA Sky Survey (NVSS) for diffuse radio emission, we have serendipitously discovered extended radio emission close to the Galactic plane. The radio morphology suggests the presence of a previously unknown…

High Energy Astrophysical Phenomena · Physics 2014-09-05 F. de Gasperin , C. Evoli , M. Bruggen , A. Hektor , M. Cardillo , P. Thorman , W. A. Dawson , C. B. Morrison

We report the first XMM detection of the SNR candidate G337.2+0.1 (=AX J1635.9-4719). The object shows centrally filled and diffuse X-ray emission. The emission peaks in the hard 3.0-10.0 keV band. A spatially resolved spectral study…

Astrophysics · Physics 2009-11-11 Jorge A. Combi , Juan F. Albacete Colombo , Gustavo E. Romero , Paula Benaglia

We report the discovery of pulsed X-ray emission from the compact source 1E 1841-045, using data obtained with the Advanced Satellite for Cosmology and Astrophysics. The X-ray source is located in the center of the small-diameter supernova…

Astrophysics · Physics 2009-10-30 G. Vasisht , E. V. Gotthelf

The nearby barred spiral galaxy NGC 1672 is thought to have a weak Seyfert nucleus in addition to its strong starburst activity. Observations with the PSPC and HRI instruments on board the ROSAT X-ray satellite show that three X-ray sources…

Astrophysics · Physics 2015-06-24 W. N. Brandt , J. P. Halpern , K. Iwasawa

We report the results of a BeppoSAX observation of the composite supernova remnant G0.9+0.1, located in the Galactic Center region. This new observation, in which the core of G0.9+0.1 is observed on-axis, confirms our previous results…

Astrophysics · Physics 2007-05-23 L. Sidoli , S. Mereghetti , G. L. Israel , F. Bocchino

We report the results of an XMM-Newton observation of the persistent X-ray source 1E1743.1-2843, located in the Galactic Center (GC) direction. We determine the position of the source at alpha_J2000=17h46m21.0s, delta_J2000=-28deg43'44"…

Astrophysics · Physics 2009-11-07 D. Porquet , J. Rodriguez , S. Corbel , P. Goldoni , R. S. Warwick , A. Goldwurm , A. Decourchelle

We report the results of a 50 ks Chandra observation of the recently discovered radio object G141.2+5.0, presumed to be a pulsar-wind nebula. We find a moderately bright unresolved X-ray source which we designate CXOU J033712.8 615302…

High Energy Astrophysical Phenomena · Physics 2016-01-20 Stephen P. Reynolds , Kazimierz J. Borkowski

We report on the results of an approximately 90 ks Chandra observation of a complex region that hosts multiple sites of recent and active star formation in ARA OB1a. The field is centered on the embedded cluster RCW 108-IR and includes and…

In the ROSAT Bright Survey (RBS) we have almost completely optically identified the brightest ~2000 high-galactic latitude sources from the ROSAT All-Sky Survey Bright Source Catalogue (1RXS). A small number of sources has empty X-ray error…

Astrophysics · Physics 2007-05-23 A. D. Schwope , G. Hasinger , R. Schwarz , F. Haberl , M. Schmidt

We present results of a search for supernova remnants (SNRs) in archival Chandra images of M33. We have identified X-ray SNRs by comparing the list of Chandra, X-ray sources in M33 with tabulations of SNR candidates identified from (1)…

G290.1-0.8 (MSH 11-61A) is a supernova remnant (SNR) whose X-ray morphology is centrally bright. However, unlike the class of X-ray composite SNRs whose centers are dominated by nonthermal emission, presumably driven by a central pulsar, we…

Astrophysics · Physics 2009-11-07 Patrick Slane , Randall K. Smith , John P. Hughes , Robert Petre

The high sensitivity of the XMM-Newton instrumentation offers the opportunity to study faint and extended sources in the Milky Way and nearby galaxies such as the Large Magellanic Cloud (LMC) in detail. The ROSAT PSPC survey of the LMC has…

High Energy Astrophysical Phenomena · Physics 2015-06-03 M. -H. Grondin , M. Sasaki , F. Haberl , W. Pietsch , E. J. Crawford , M. D. Filipovic , L. M. Bozzetto , S. Points , R. C. Smith