Tootfinder

A billionaire wanted to save the Hubble Telescope — here's why NASA politely declined
#Hubble

🔊 #NowPlaying on #fip
Hiatus Kaiyote:
🎵 Telescope
#HiatusKaiyote
https://open.spotify.com/track/29oH20WCU0mVO3SwfIaaib
https://hiatuskaiyote.bandcamp.com/track/telescope

Zu schlechte Informationsqualität für Bahnreisende: Die großen Mängel bei der Informationen zu Störungen im Bahnbereich nach dem Hochwasser in Süddeutschland zeigen erneut die strukturellen Defizite in diesem Bereich. Welche Züge fahren und welche nicht, wo es Umleitungen und Teilausfälle gab, war in viel zu vielen Fällen unklar. Daher fordert der Fahrgastverband PRO BAHN von der Politik, den Branchenverbänden und den Unternehmen eine zentrale Struktur zu schaffen, die…

Zu schlechte Informationsqualität für Bahnreisende
Zu schlechte Informationsqualität für Bahnreisende

A Millisecond Pulsar Binary Embedded in a #GalacticCenter Radio Filament: https://iopscience.iop.org/article/10.3847/2041-8213/ad4866 -> A team of astronomers, lead by CSIRO scientists, has used the Murriyang (Parkes radio telescope) and South Africa’s MeerKAT telescope to make the first detections of a millisecond pulsar in the Galactic Centre, looking near the mysterious radio filaments surrounding our Galaxy’s supermassive black hole: https://www.spaceaustralia.com/news/millisecond-pulsar-lurking-galactic-centre

Heute ein bisschen mit der #Belichtungszeit rumgespielt. Eine Sekunde war am besten, finde ich :)
Es wäre zwar super Teleskopwetter, aber ich bin kaputt und möchte morgen fit sein für den Fahrrad-Rave.
#Sonnenuntergang
#Sternenhimmel

Zu schlechte Informationsqualität für Bahnreisende: Die großen Mängel bei der Informationen zu Störungen im Bahnbereich nach dem Hochwasser in Süddeutschland zeigen erneut die strukturellen Defizite in diesem Bereich. Welche Züge fahren und welche nicht, wo es Umleitungen und Teilausfälle gab, war in viel zu vielen Fällen unklar. Daher fordert der Fahrgastverband PRO BAHN von der Politik, den Branchenverbänden und den Unternehmen eine zentrale Struktur zu schaffen, die…

Zu schlechte Informationsqualität für Bahnreisende
Zu schlechte Informationsqualität für Bahnreisende

This https://arxiv.org/abs/2211.07469 has been replaced.
link: https://scholar.google.com/scholar?q=a

Adaptive Analytical Ray Tracing of Black Hole Photon Rings
Recent interferometric observations by the Event Horizon Telescope have resolved the horizon-scale emission from sources in the vicinity of nearby supermassive black holes. Future space-based interferometers promise to measure the "photon ring"--a narrow, ring-shaped, lensed feature predicted by general relativity, but not yet observed--and thereby open a new window into strong gravity. Here we present AART: an Adaptive Analytical Ray-Tracing code that exploits the integrability of light propag…

This https://arxiv.org/abs/2406.01556 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Observations and detectability of young Suns' flaring and CME activity in optical spectra
The Sun's history is still a subject of interest to modern astrophysics. Observationally constrained CME rates of young solar analogues are still lacking, as those require dedicated monitoring. We present medium resolution optical spectroscopic monitoring of a small sample of bright and prominent solar analogues over a period of three years using the 0.5m telescope at observatory Lustbühel Graz (OLG) of the University of Graz, Austria. The aim is the detection of flares and CMEs from those spe…

Galactic center GeV excess and classification of Fermi-LAT sources with machine learning
Dmitry V. Malyshev
https://arxiv.org/abs/2406.03990 https://

Galactic center GeV excess and classification of Fermi-LAT sources with machine learning
Excess of gamma rays with a spherical morphology around the Galactic center (GC) observed in the Fermi large area telescope (LAT) data is one of the most intriguing features in the gamma-ray sky. The excess has been interpreted by annihilating dark matter as well as emission from a population of unresolved millisecond pulsars (MSPs). We use a multi-class classification of Fermi-LAT sources with machine learning to study the distribution of MSP-like sources among unassociated Fermi-LAT sources n…

This https://arxiv.org/abs/2405.12271 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Exploring the directly imaged HD 1160 system through spectroscopic characterization and high-cadence variability monitoring
The time variability and spectra of directly imaged companions provide insight into their physical properties and atmospheric dynamics. We present follow-up R~40 spectrophotometric monitoring of red companion HD 1160 B at 2.8-4.2 $μ$m using the double-grating 360° vector Apodizing Phase Plate (dgvAPP360) coronagraph and ALES integral field spectrograph on the Large Binocular Telescope Interferometer. We use the recently developed technique of gvAPP-enabled differential spectrophotometry to pr…