Zobrazeno 1 - 10
of 145
pro vyhledávání: '"Castelletti, G."'
Typically, integrated radio frequency continuum spectra of supernova remnants (SNRs) exhibit a power-law form due to their synchrotron emission. In numerous cases, these spectra show an exponential turnover, long assumed due to thermal free-free abso
Externí odkaz:
http://arxiv.org/abs/2312.11440
We present the first detailed study on the Galactic supernova remnant (SNR) G46.8-0.3 and its environment since its discovery more than 50 years ago. With new flux measurements from radio surveys plus a compilation from the literature we created an i
Externí odkaz:
http://arxiv.org/abs/2203.05537
We present new images and continuum spectral analysis for 14 resolved Galactic SNRs selected from the 74 MHz Very Large Array Low-Frequency Sky Survey Redux (VLSSr). We combine new integrated measurements from the VLSSr with flux densities extracted
Externí odkaz:
http://arxiv.org/abs/2108.08178
We present the results of XMM-Newton observations toward the pulsar PSR J1826$-$1256, which lies at 5$^{\prime}$.4 from the centroid of the TeV source HESS J1826$-$130. These data show an elongated nebula with the pulsar located in the northern borde
Externí odkaz:
http://arxiv.org/abs/1909.04498
Aims. The goal of this paper is to detect synchrotron emission from the relic electrons of the crushed pulsar wind nebula (PWN) HESS J1825-137 and to investigate the origin of the $\gamma$-ray emission from HESS J1826-130.\\ Methods. The study of HES
Externí odkaz:
http://arxiv.org/abs/1902.02215
We have identified a new supernova remnant (SNR), G51.04+0.07 (G51.04), using observations at 74 MHz from the VLA Low-Frequency Sky Survey Redux. Earlier, higher frequency radio continuum, recombination line, and infrared data had correctly inferred
Externí odkaz:
http://arxiv.org/abs/1806.07452
We present a detailed analysis of the morphological properties of the Crab Nebula across the electromagnetic spectrum based on new and previous high-quality data from radio to X-rays. In the radio range we obtained an image of the entire nebula at 3
Externí odkaz:
http://arxiv.org/abs/1704.02968
Publikováno v:
A&A 602, A31 (2017)
Using observations carried out with the GMRT, we performed high-quality full-synthesis imaging at 610 MHz of the source G29.37+0.1, which is an as-yet-unclassified object linked to the TeV source HESS J1844-030. These data, combined with observations
Externí odkaz:
http://arxiv.org/abs/1702.02587
Publikováno v:
A&A 590, A70 (2016)
We introduce a distinct method to perform spatially-resolved spectral analysis of astronomical sources with highly structured X-ray emission. The method measures the surface brightness of neighbouring pixels to adaptively size and shape each region,
Externí odkaz:
http://arxiv.org/abs/1603.08506
Publikováno v:
A&A 589, A51 (2016)
The supernova remnant (SNR) G338.3-0.0 spatially correlates with HESS J1640-465, which is considered the most luminous gamma-ray source associated with a SNR in our Galaxy. The X-ray pulsar PSR J1640-4631 has been recently discovered within the SNR s
Externí odkaz:
http://arxiv.org/abs/1603.05137