activity
20142026
most citedFirst Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

1.9k citations · 15k across the 75 of their papers we have counts for

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9 papers · 1 filter

astro-ph.IM2025

Shared-optical-path VLBI frequency phase transfer from 86 to 258 GHz on an 8600 km baseline: Demonstrated with the APEX and IRAM 30 m telescopes

G. -Y. Zhao, A. L. Roy, J. F. Wagner +24

The receiver N3AR operating at a frequency range between 67 and 116 GHz has been commissioned at the APEX telescope in October 2024. This adds a new low-frequency band for APEX, wi…

astro-ph.IM2025

First frequency phase transfer from the 3 mm to the 1 mm band on an Earth-sized baseline

Sara Issaoun, Dominic W. Pesce, María J. Rioja +33

Frequency Phase Transfer (FPT) is a technique designed to increase coherence and sensitivity in radio interferometry by making use of the non-dispersive nature of the troposphere t…

astro-ph.IM2024★ 30 cited

First Very Long Baseline Interferometry Detections at 870μm

Alexander W. Raymond, Sheperd S. Doeleman, Keiichi Asada +276

The first very long baseline interferometry (VLBI) detections at 870m wavelength (345GHz frequency) are reported, achieving the highest diffraction-limited angular resolutio…

astro-ph.IM2023

Metadata for the Flux Density Calibration of the April 2018 Event Horizon Telescope Data

J. Y. Koay, C. Romero-Cañizales, L. D. Matthews +29

The Event Horizon Telescope (EHT) observations carried out in 2018 April at 1.3 mm wavelengths included 9 stations in the array, comprising 7 single-dish telescopes and 2 phased ar…

astro-ph.IM2020★ 1 cited

Commissioning of Namakanui on the JCMT

Izumi Mizuno, Per Friberg, Ryan Berthold +39

Namakanui is an instrument containing three inserts in an ALMA type Dewar. The three inserts are Alaihi, Uu and Aweoweo operating around 86, 230 and 345GHz. The receiver is being c…

astro-ph.IM2020★ 16 cited

Detection of the magnetar XTE J1810-197 at 150 and 260 GHz with the NIKA2 Kinetic Inductance Detector camera

P. Torne, J. Macías-Pérez, B. Ladjelate +13

The investigation of pulsars between millimetre and optical wavelengths is challenging due to the faintness of the pulsar signals and the relative low sensitivity of the available…

astro-ph.IM2020★ 6 cited

SYMBA: An end-to-end VLBI synthetic data generation pipeline

F. Roelofs, M. Janssen, I. Natarajan +203

Realistic synthetic observations of theoretical source models are essential for our understanding of real observational data. In using synthetic data, one can verify the extent to…

astro-ph.IM2019★ 1.1k cited

First M87 Event Horizon Telescope Results. II. Array and Instrumentation

The Event Horizon Telescope Collaboration

The Event Horizon Telescope (EHT) is a very long baseline interferometry (VLBI) array that comprises millimeter- and submillimeter-wavelength telescopes separated by distances comp…

astro-ph.IM2014★ 11 cited

A Cosmic Census of Radio Pulsars with the SKA

E. F. Keane, B. Bhattacharyya, M. Kramer +16

The Square Kilometre Array (SKA) will make ground breaking discoveries in pulsar science. In this chapter we outline the SKA surveys for new pulsars, as well as how we will perform…