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13 papers
Data reduction pipeline for the SuMAC millimeter-wave spectrometer at the LMT
A. M. Lapuente, P. S. Barry, M. Becerril-Tapia +22
We present the data reduction and analysis pipeline for the SuperSpec-MUSCAT Collaboration (SuMAC) along with several key science data products. In Summer 2025, SuperSpec on-chip s…
SuMAC: On-sky demonstration of multi-pixel on-chip millimeter-wave spectroscopy at the Large Millimeter Telescope
Marcial Becerril-Tapia, Peter S. Barry, Christopher S. Benson +22
The SuperSpec-MUSCAT Collaboration (SuMAC) is an effort to operate SuperSpec spectrometers in the MUSCAT instrument at the Large Millimeter Telescope (LMT). SuperSpec is an on-chip…
The LMT 2 millimeter receiver system (B4R). II. Science demonstration observations toward Orion-KL/OMC-1
Teppei Yonetsu, Ryohei Kawabe, Yuki Yoshimura +26
We present the results of mapping and single-point spectral scans toward Orion-KL/OMC-1 performed as science demonstrations of a 2 mm SIS receiver, the Band 4 Receiver (B4R), insta…
The LMT 2 Millimeter Receiver System (B4R). I. Overview and Results of Science Demonstration
Ryohei Kawabe, Takeshi Sakai, Kunihiko Tanaka +30
We report on the results of the on-sky test and science demonstration conducted with the 2 mm receiver system, B4R, on the 50 m Large Millimeter Telescope (LMT), located at an alti…
Large-Scale Mapping Observations of DCN and DCO toward Orion KL
Kotomi Taniguchi, Prathap Rayalacheruvu, Teppei Yonetsu +14
We present emission maps (1.5'1.5' scale, corresponding to 0.18 pc) of the DCN () and DCO () lines in the 2 mm band toward the Orion KL region obtained wi…
First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way
The Event Horizon Telescope Collaboration
We present the first Event Horizon Telescope (EHT) observations of Sagittarius A* (Sgr A), the Galactic center source associated with a supermassive black hole. These observati…
Time-domain deep learning filtering of structured atmospheric noise for ground-based millimeter astronomy
Alejandra Rocha-Solache, Iván Rodríguez-Montoya, David Sánchez-Argüelles +1
The complex physics involved in atmospheric turbulence makes it very difficult for ground-based astronomy to build accurate scintillation models and develop efficient methodologies…
Early Science with the Large Millimeter Telescope: a 1.1 mm AzTEC Survey of Red- dusty star-forming galaxies
A. Montaña, J. A. Zavala, I. Aretxaga +32
We present LMT/AzTEC 1.1mm observations of luminous high-redshift dusty star-forming galaxy candidates from the sq.deg -ATLAS survey, selected on the…
Constraints on the velocity dispersion of Dark Matter from Cosmology and new bounds on scattering from the Cosmic Dawn
Iván Rodríguez-Montoya, Vladimir Ávila-Reese, Abdel Pérez-Lorenzana +1
The observational value of the velocity dispersion, , is missing in the Dark Matter (DM) puzzle. Non-zero or non-thermal DM velocities can drastically influence Large Sc…
Multiple component decomposition from millimeter single-channel data
Iván Rodríguez-Montoya, David Sánchez-Argüelles, Itziar Aretxaga +6
We present an implementation of a blind source separation algorithm to remove foregrounds off millimeter surveys made by single-channel instruments. In order to make possible such…
Deep LMT/AzTEC millimeter observations of Epsilon Eridani and its surroundings
M. Chavez-Dagostino, E. Bertone, F. Cruz-Saenz de Miera +21
Epsilon Eridani is a nearby, young Sun-like star that hosts a ring of cool debris analogous to the solar system's Edgeworth-Kuiper belt. Early observations at (sub-)mm wavelengths…
Cosmic Bose dark matter
Iván Rodríguez-Montoya, Abdel Pérez-Lorenzana, Eduard De La Cruz-Burelo +2
Cold and hot dark matter (CDM, HDM) imprint distinctive effects on the cosmological observables, naturally, they are often thought to be made of different kinds of particles. Howev…
Ultra light bosonic dark matter and cosmic microwave background
Ivan Rodriguez-Montoya, Juan Magaña, Tonatiuh Matos +1
In this paper, we consider the hypothesis in which a species of ultra light bosonic dark matter (ULBDM) with mass eV could be the dominant dark matter (DM) in…