Search Publications
Missions
Journals
Publication Years
Discovery of an X-ray nebula in the field of millisecond pulsar PSR J1911-1114
Takata, J.; Hui, C. Y.; Lin, L. C. C. +1 more
We have discovered an extended X-ray feature, apparently associated with millisecond pulsar (MSP) PSR J1911-1114. The feature, which extends for ∼1', was discovered from an XMM-Newton observation; the radio timing position of PSR J1911-1114 is in the midpoint of the feature. The orientation of the feature is similar to the proper motion direction …
A Changing-Look AGN to Be Probed by X-ray Polarimetry
Miniutti, Giovanni; Agís-González, Beatriz; Hutsemékers, Damien
Active galactic nuclei (AGN) produce the highest intrinsic luminosities in the Universe from within a compact region. The central engine is thought to be powered by accretion onto a supermassive black hole. A fraction of this huge release of energy influences the evolution of the host galaxy, and in particular, star formation. Thus, AGN are key as…
Analysis of a Failed Eclipse Plasma Ejection Using EUV Observations
Koutchmy, S.; Tavabi, E.; Bazin, C.
The photometry of eclipse white-light (W-L) images showing a moving blob is interpreted for the first time together with observations from space with the PRoject for On Board Autonomy (PROBA-2) mission (ESA). An off-limb event seen with great details in W-L was analyzed with the SWAP imager (Sun Watcher using Active pixel system detector and image…
A unique distant submillimeter galaxy with an X-ray-obscured radio-luminous active galactic nucleus
Daddi, E.; Elbaz, D.; Wang, T. +10 more
Aims: We present a multiwavelength study of an atypical submillimeter galaxy, GH500.30, in the GOODS-North field, with the aim to understand its physical properties of stellar and dust emission, as well as the central active galactic nucleus (AGN) activity. Although it is shown that the source is likely an extremely dusty galaxy at high redsh…
EXTraS discovery of a peculiar flaring X-ray source in the Galactic globular cluster NGC 6540
Mereghetti, Sandro; Tiengo, Andrea; Belfiore, Andrea +7 more
We report the discovery of a flaring X-ray source 7″ from the center of the globular cluster NGC 6540 obtained during the EXTraS project devoted to a systematic search for variability in archival data of the XMM-Newton satellite. The source had a quiescent X-ray luminosity on the order of 1032 erg s-1 in the 0.5-10 keV range …
Limits on the Contribution of Endogenic Radiolysis to the Presence of Molecular Oxygen in Comet 67P/Churyumov-Gerasimenko
Mousis, Olivier; Bouquet, Alexis; Nicolaou, Georgios +6 more
Radiolytic production has been proposed as a potential source for the molecular oxygen observed in comet 67P/Churyumov-Gerasimenko. Radiolysis can be exogenic or endogenic, the latter due to radionuclides present in the dust constitutive of the comet nucleus. We investigated the possibility of forming a significant amount of molecular oxygen throu…
In-Orbit Performance of the Digital Electronics for the X-Ray Microcalorimeter Onboard the Hitomi Satellite
Tsujimoto, M.; Tashiro, M. S.; Ishisaki, Y. +9 more
The pulse shape processor is the onboard digital electronics unit of the X-ray microcalorimeter instrument—the soft X-ray spectrometer—onboard the Hitomi satellite. It processes X-ray events using the optimum filtering with limited resources. It was operated for 36 days in orbit continuously without issues and met the requirement of processing a 1…
Variable interstellar absorption lines in young stellar aggregates
Krełowski, J.; Strobel, A.; Vješnica, S. +2 more
The variability of interstellar atomic lines, sporadically reported in the astronomical literature, has been confirmed both in the case of the nearby hot star δ Ori and the very young and violent star-forming region η Carinae, using high-resolution echelle spectra. The presented variability concerns the intensities and profiles of Na I, K I and Ca…
Warm CO in evolved stars from the THROES catalogue. I. Herschel-PACS spectroscopy of O-rich envelopes (Corrigendum)
García-Lario, P.; Sánchez Contreras, C.; da Silva Santos, J. M. +1 more
Optimizing asteroid orbit computation for Gaia with normal points
Muinonen, Karri; Fedorets, Grigori; Granvik, Mikael +11 more
Context. In addition to the systematic observations of known solar-system objects (SSOs), a continuous processing of new discoveries requiring fast responses is implemented as the short-term processing of Gaia SSO observations, providing alerts for ground-based follow-up observers. The common independent observation approach for the purposes of or…