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17 papers · 1 filter
An invitation to Fibonacci digits
Justin Cheigh, Guilherme Zeus Dantas e Moura, Jacob Lehmann Duke +6
The purpose of this short note is to show the interplay between math outreach and conducting original research, in particular how each can build off the other.
X-ray polarization of the magnetar 1E 1841-045
Rachael Stewart, George A. Younes, Alice K. Harding +15
We report on IXPE and NuSTAR observations beginning forty days after the 2024 outburst onset of magnetar 1E 1841-045, marking the first IXPE observation of a magnetar in an enhance…
Accurate method for ultralight axion CMB and matter power spectra
Rayne Liu, Wayne Hu, Daniel Grin
Ultralight axions (ULAs) with masses are well motivated in string-inspired models and can be part or all of the dark energy or the…
The Galaxy Zoo Catalogs for the Galaxy And Mass Assembly (GAMA) Survey
Benne W. Holwerda, Clayton Robertson, Kyle Cook +16
Galaxy Zoo is an online project to classify morphological features in extra-galactic imaging surveys with public voting. In this paper, we compare the classifications made for two…
The Atacama Cosmology Telescope: Quantifying Atmospheric Emission above Cerro Toco
Thomas W. Morris, Elia Battistelli, Ricardo Bustos +17
At frequencies below 1 Hz, fluctuations in atmospheric emission in the Chajnantor region in northern Chile are the primary source of interference for bolometric millimeter-wave obs…
Finding Passive Galaxies in HI-MaNGA: The Impact of Star-Formation Rate Indicator
Nora Salem, Karen Masters, David Stark +1
HI-rich galaxies typically have high star-formation rates (SFR), but there exist interesting HI-rich and low star-forming (low-SF) galaxies. Previous work on a sample of these gala…