Zobrazeno 1 - 10
of 264
pro vyhledávání: '"Ritter, Andreas"'
We have undertaken a deep investigation of a well defined sample of 136 PNe located in a 10x10 degree central region of the Galactic Bulge observed with the ESO VLT and supplemented by archival HST imagery. These studies have provided precise morphol
Externí odkaz:
http://arxiv.org/abs/2401.13257
Autor:
de Kuijper, Kees, Diwan, Rishank, Pal, Partha Sarathi, Ritter, Andreas, Parkinson, Pablo M. Saz, Kong, Andy C. T., Parker, Quentin A.
Publikováno v:
Exp Astron 57, 16 (2024)
The low-energy $\gamma$-ray (0.1-30 MeV) sky has been relatively unexplored since the decommissioning of the COMPTEL instrument on the Compton Gamma-Ray Observatory (CGRO) satellite in 2000. However, the study of this part of the energy spectrum (the
Externí odkaz:
http://arxiv.org/abs/2401.09735
Autor:
Ritter, Andreas, Parker, Quentin A., Lykou, Foteini, Zijlstra, Albert A., Guerrero, Martin A., Du, Pascal Le
On August 25th 2013 Dana Patchick from the "Deep Sky Hunters" (DSH) amateur astronomer group discovered a diffuse nebulosity in the Wide-field Infrared Survey Explorer (WISE) mid-IR image archive that had no optical counterpart but appeared similar t
Externí odkaz:
http://arxiv.org/abs/2311.03700
Autor:
Diwan, Rishank, de Kuijper, Kees, Pal, Partha Sarathi, Ritter, Andreas, Parkinson, Pablo Saz, Kong, Andy C. T., Parker, Quentin
The observation of the low-energy $\gamma$-ray (0.1-30 MeV) sky has been significantly limited since the COMPTEL instrument was decommissioned aboard the Compton Gamma-ray Observer (CGRO) satellite in 2000. The exploration of $\gamma$-ray photons wit
Externí odkaz:
http://arxiv.org/abs/2308.09266
Publikováno v:
ApJL, 951, 2, L44 (2023)
We report observations of a remarkable major axes alignment nearly parallel to the Galactic plane of 5{\sigma} significance for a subset of bulge "planetary nebulae" (PNe) that host, or are inferred to host, short period binaries. Nearly all are bipo
Externí odkaz:
http://arxiv.org/abs/2307.07140
Publikováno v:
Sci Data 10, 687 (2023)
This paper presents the Zurich Transit Bus (ZTBus) dataset, which consists of data recorded during driving missions of electric city buses in Zurich, Switzerland. The data was collected over several years on two trolley buses as part of multiple rese
Externí odkaz:
http://arxiv.org/abs/2303.08667
Autor:
Widmer, Fabio, Ritter, Andreas, Achermann, Mathias, Büeler, Fabian, Bagajo, Joshua, Onder, Christopher H.
Publikováno v:
IFAC-PapersOnLine, vol. 56, no. 2. Elsevier BV, pp. 10656-10663, 2023
In this paper, we present a novel approach to perform highly efficient numerical simulations of the heating, ventilation, and air-conditioning (HVAC) system of an electric city bus. The models for this simulation are based on the assumption of a stea
Externí odkaz:
http://arxiv.org/abs/2303.00571
Publikováno v:
Monthly Notices of the Royal Astronomical Society, November 2022
This is the first in a series of papers that present sets of different results for 136 compact, known planetary nebulae within a 10 $\times$ 10 degree region of the Galactic bulge. We use a large, previously unpublished sample of our own extensive ES
Externí odkaz:
http://arxiv.org/abs/2211.06029