Tootfinder

Telescopes on the Andes glimpse elusive encounters fueled by the very first stars in the universe more than 13 billion years ago by detecting cosmic microwave light signals https://www.404media.co/humans-have-now-seen-the-dawn-of-time-from-ear…

Humans Have Now Seen the Dawn of Time from Earth After Breakthrough
Telescopes perched on the Andes Mountains glimpsed elusive encounters fueled by the first of the first stars in the universe more than 13 billion years ago.

A Measurement of the Largest-scale #CMB E-mode Polarization with CLASS: https://iopscience.iop.org/article/10.3847/1538-4357/adc723 -> Small telescopes in Chile are first on Earth to cut through the cosmic noise, peering back more than 13 billion years to the universe's first light: https://hub.jhu.edu/2025/06/11/telescopes-look-at-cosmic-dawn/

Radial Pulsations in Polaris: A Secondary Science Application of Cherenkov Telescopes via Intensity Interferometry
Km Nitu Rai, Prasenjit Saha, Subrata Sarangi
https://arxiv.org/abs/2508.09742

Radial Pulsations in Polaris: A Secondary Science Application of Cherenkov Telescopes via Intensity Interferometry
Ground-based Cherenkov telescopes, although typically inoperative during moonlit nights for gamma-ray observations, offer a valuable opportunity for secondary scientific applications through Intensity Interferometry (II). Recent developments and observations suggest that implementing II instrumentation on existing Imaging Atmospheric Cherenkov Telescopes (IACTs) or the Cherenkov Telescope Array (CTA) can significantly advance optical stellar measurements. Motivated by the resurgence of II effor…

#ndwgoecountdown Exoplaneten – Entdeckung von Planeten um ferne Sterne
Tausende Planeten, die um ferne Sterne kreisen, sind bisher bekannt. Doch wie entdeckt man einen Planeten, der viele Lichtjahre von uns entfernt ist? Im Mitmachexperiment erläutern Forscher*innen eine der gängigsten Methoden und berichten von der künftigen Weltraummission PLATO und ihrer Suche nach erdähnli…

The Neutrino Kaleidoscope: Searches for Non-Standard Neutrino Oscillations at Neutrino Telescopes with a TeV Muon Accelerator Source
Nicholas W. Kamp, Gray Putnam
https://arxiv.org/abs/2508.09249

The Neutrino Kaleidoscope: Searches for Non-Standard Neutrino Oscillations at Neutrino Telescopes with a TeV Muon Accelerator Source
Muon accelerators, a potential technology for enabling $\mathcal{O}$(10 TeV) parton center of mass energy collisions, would also source an intense, collimated beam of neutrinos at TeV energies. The energy and size of this beam would be excellently matched as a source for existing and planned neutrino telescopes: gigaton-sized detectors of astrophysical neutrinos at and above TeV energies. In this paper, we introduce the technical considerations and scientific reach of pairing a muon accelerator…

Precision spectral measurements of Chromium and Titanium from 10 to 250 GeV$/n$ and sub-Iron to Iron ratio with the Calorimetric Electron Telescope on the ISS
O. Adriani, Y. Akaike, K. Asano, Y. Asaoka, E. Berti, P. Betti, G. Bigongiari, W. R. Binns, M. Bongi, P. Brogi, A. Bruno, N. Cannady, G. Castellini, C. Checchia, M. L. Cherry, G. Collazuol, G. A. de Nolfo, K. Ebisawa, A. W. Ficklin, H. Fuke, S. Gonzi, T. G. Guzik, T. Hams, K. Hibino, M. Ichimura, M. H. Israel, K. Kasahara, J. Kat…

Precision spectral measurements of Chromium and Titanium from 10 to 250 GeV$/n$ and sub-Iron to Iron ratio with the Calorimetric Electron Telescope on the ISS
The Calorimetric Electron Telescope (CALET), in operation on the International Space Station since 2015, collected a large sample of cosmic-ray (CR) iron and sub-iron events over a wide energy interval. In this paper we report an update of our previous measurement of the iron flux and we present - for the first time - a high statistics measurement of the spectra of two sub-iron elements Cr and Ti in the energy interval from 10 to 250 GeV/n. The analyses are based on 8 years of data. Differently…

Atmospheric Characterisation with the Twinkle Space Telescope Following Advances from JWST Observations
Tailong Zhang, Benjamin Wilcock, Sushuang Ma, Giovanna Tinetti, Lawrence Bradley, Marcell Tessenyi, Jonathan Tennyson
https://arxiv.org/abs/2508.10386

Atmospheric Characterisation with the Twinkle Space Telescope Following Advances from JWST Observations
The Twinkle Space Telescope is a satellite designed for spectroscopic observations of a wide range of extrasolar and solar system objects. Equipped with a 0.45 m diameter telescope and a spectrometer covering from 0.5 to 4.5 microns simultaneously, Twinkle will be launched in a sun-synchronous, low-Earth orbit, and it is expected to operate for seven years. Twinkle is developed, managed and operated by Blue Skies Space (BSSL), a space science data company whose vision is to accelerate and expan…

The #GiantMagellanTelescope received official approval from the National Science Foundation (NSF) confirming that the observatory will advance into its Major Facilities Final Design Phase, one of the final steps before becoming eligible for federal construction funding: https://astro.arizona.edu/news/giant-magellan-telescope-advances-national-science-foundation-final-design-phase

In-orbit Spectral Calibration Prospects for the COSI Space Telescope
Aravind B. Valluvan, Steven E. Boggs, Savitri Gallego, Jarred Roberts, Gabriel Brewster, Sophia Haight, Carolyn Kierans, Sean Pike, Albert Y. Shih, John A. Tomsick, Andreas Zogaluer
https://arxiv.org/abs/2508.10172

In-orbit Spectral Calibration Prospects for the COSI Space Telescope
The Compton Spectrometer and Imager is an upcoming NASA space telescope in the MeV range. COSI's primary science goals include precisely mapping nuclear line and positron annihilation emission in the Milky Way galaxy through Compton imaging. This relies on our ability to maintain COSI's spectral performance over its mission lifetime. Changes to the detectors' gain characteristics over time will result in a non-linear stretching of the entire energy range. Moreover, observations from past MeV te…

On-axis afocal telescopes as framework for Cubesat based astronomical imagers and slit-less spectrographs
Anwesh Kumar Mishra, Gourav Banerjee, Rekhesh Mohan, Maheswar Gopinathan
https://arxiv.org/abs/2507.08323

On-axis afocal telescopes as framework for Cubesat based astronomical imagers and slit-less spectrographs
Cubesats present unique opportunities for observational astronomy in the modern era. They are useful in observing difficult-to-access wavelength regions and long-term monitoring of interesting astronomical sources. However, conventional telescope designs are not necessarily the best fit for restricted envelope of a Cubesat. Additionally, fine-pointing stability on these platforms is difficult due to the low mass of the spacecraft and special allocations within the optical design are needed to a…