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765 papers · 1 filter

astro-ph.IM2026

Focal plane modal estimation of high-order wavefront drifts on coronagraphic testbeds

Saikrishna Manojkumar, Susan F. Redmond, Leonid Pogorelyuk +4

The upcoming Habitable Worlds Observatory (HWO) requires precise wavefront stability over long observation periods to directly image Exo-Earths, which are 10 orders of magnitude di…

astro-ph.IM2026

The SIRMOS mission concept: a space-based near-IR spectroscopic survey of 100 million galaxies in the Euclid Wide Survey footprint

Gregory D. Wirth, Yun Wang, Massimo Robberto +46

SIRMOS is a mission concept for a future NASA Astrophysics Explorer opportunity that aims to revolutionize our understanding of the universe by mapping the large-scale structure of…

astro-ph.IM2026

PRIMA prototype spaceflight KID readout electronics laboratory characterization

Adrian K. Sinclair, Chris Albert, C. Matt Bradford +28

We present further development and testing of prototype kinetic inductance detector (KID) readout electronics for the PRobe far-Infrared Mission for Astrophysics (PRIMA). PRIMA is…

astro-ph.IM2026★ 1 cited

The Nancy Grace Roman Space Telescope Coronagraph Community Participation Program

Dmitry Savransky, Vanessa P. Bailey, Schuyler G. Wolff +53

In preparation for the operational phase of the Nancy Grace Roman Space Telescope, NASA has created the Coronagraph Community Participation Program (CPP) to prepare for and execute…

astro-ph.IM2026

A bestiary of low-level electrical artifacts in SPHEREx flight data

Candice M. Fazar, Michael Zemcov, C. Darren Dowell +3

SPHEREx, NASA's all-sky spectrophotometric survey mission, maps the sky in 102 spectral channels from 0.75 um to 5.0 um at 6.15'' resolution from low-Earth orbit using a custom rea…

astro-ph.IM2026★ 4 cited

Image persistence flagging for SPHEREx

Candice Fazar, C. Darren Dowell, Brendan P. Crill +3

Image persistence in HAWAII-2RG HgCdTe detectors has been observed by multiple parties. Also known as latent signal, this effect occurs when sensor images following an illumination…

astro-ph.IM2026

Early Exploration of the Scientific Discovery Space for the Habitable Worlds Observatory

Courtney D. Dressing, Danica Adams, Evelyne Alecian +324

The Habitable Worlds Observatory (HWO) is a future NASA flagship mission concept identified by the Astro2020 Decadal Survey as the highest priority for large space missions. HWO sh…

astro-ph.IM2026

Design and Performance of 220 and 270 GHz Bandpass Filters for BICEP Array

A. Steiger, The BICEP/Keck Collaboration, P. A. R. Ade +90

The BICEP Array (BA) is the latest in the BICEP/ Keck series of experiments that aim to measure the polarization of the cosmic microwave background (CMB) with small aperture polari…

astro-ph.IM2026

Multi-sensor fusion for fine-guidance and milliarcsecond-level attitude estimation of balloon-borne telescope

Philippe Voyer, Maya Amit, Steven J. Benton +44

Balloon-borne telescopes rely on fine-guidance systems to achieve milliarcsecond image stability despite residual disturbances from the balloon environment. In these systems, the F…

astro-ph.IM2026

Design and development of a near-IR integral field spectrograph for the HWO Coronagraph Instrument

Stephen P. Todd, Dan Dicken, Raziye Artan +5

The primary mission of the Habitable Worlds Observatory (HWO) is to identify and characterise potentially habitable worlds. Spectra across a wide wavelength range are needed to cov…

astro-ph.IM2026

Ultra-High-Resolution Astronomy with the Solar Gravitational Lens

Slava G. Turyshev

The solar gravitational lens (SGL) is a target-specific observatory: the Sun supplies the wave-optical element, while spacecraft provide occultation, annular photometry, sampling,…

astro-ph.IM2026

Exploring Exoplanets with Interferometry

Sascha P. Quanz, Bertrand Mennesson, Charles Beichman +27

(Extract from the Executive Summary) Humanity stands at the threshold of answering one of its most profound questions: Does life exist beyond Earth? Ongoing and upcoming space miss…

astro-ph.IM2026

Radiation Total Dose for PRIMA: Cold Exposure with Alpha Particles

Elijah Kane, Chris Albert, Andrew Beyer +11

The Probe far-Infrared Mission for Astrophysics (PRIMA) is a far-infrared (24-261 micron wavelengths) probe-class space observatory currently under Phase A study, which promises or…

astro-ph.IM2026

Euclid Quick Data Release (Q1). AstroVink: A vision transformer approach to find strong gravitational lens systems

Euclid Collaboration, S. H. Vincken, K. Rojas +302

We present AstroVink, a vision transformer classifier designed for automated identification of strong lens candidates in Euclid imaging. We build upon the DINOv2 encoder, fine tune…

astro-ph.IM2026

In Situ Interferometric Spatial Mapping Of A Microwave Kinetic Inductance Detector Array

Chris Albert, Ritoban Basu Thakur, Farzad Faramarzi +7

We present a method of spatially mapping microwave kinetic inductance detector (MKID) arrays, in a dark setup. MKIDs are superconducting natively multiplexed resonators which enabl…

astro-ph.IM2026★ 1 cited

Characterizing Earth analogs may require a moderate or high-resolution spectrograph

Jean-Baptiste Ruffio, Sarah Steiger, Corey Spohn +16

A primary goal of the Habitable Worlds Observatory (HWO) is to detect and measure the abundance of biosignature molecules, such as water (H2O) and oxygen (O2), in the atmosphere of…

astro-ph.IM2026

Dimpled scalar vortex coronagraph laboratory demonstration

Niyati Desai, Garreth Ruane, Susan Redmond +3

Achieving the Habitable Worlds Observatory (HWO) goal of 10^-10 contrast at a separation of 3 /D across a 20% bandwidth requires coronagraph focal plane masks with both broadban…

astro-ph.IM2026

Orbital Debris in Earth Orbit: Operations, Stability, Control, and Market Formation

Slava G. Turyshev

Orbital debris is a nonlinear control problem in a stratified orbital environment, not a static inventory. This paper develops a reduced-order shell-and-size framework that connect…

astro-ph.IM2026

Euclid: An automated system to match Rubin transient alerts to Euclid observations

C. Duffy, I. M. Hook, C. M. Gutierrez +150

The Vera C. Rubin observatory is expected to produce 10 million transient alerts per night in ugrizy filters, whilst Euclid is a visible to near-infrared space telescope engaged in…

astro-ph.IM2026

Euclid. Properties and performance of the NISP signal estimator

Euclid Collaboration, F. Cogato, B. Kubik +292

The Euclid spacecraft, located at the second Lagrangian point of the Sun-Earth system, hosts the Near-Infrared Spectrometer and Photometer (NISP) instrument. NISP is equipped with…

astro-ph.IM2026★ 4 cited

Spectral response of SPHEREx

Howard Hui, Jamie Bock, Samuel Condon +31

The Spectro Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer (SPHEREx) is conducting the first all-sky near infrared spectral survey spanning 0.…

astro-ph.IM2026★ 1 cited

Scalable Gaussian Processes for Integrated and Overlapping Measurements Via Augmented State Space Models

Ryan A. Rubenzahl, Soichiro Hattori, Simo Särkkä +4

Astronomical measurements are often integrated over finite exposures, which can obscure latent variability on comparable timescales. Correctly accounting for exposure integration w…

astro-ph.IM2026

Exposure-averaged Gaussian Processes for Combining Overlapping Datasets

Jacob K. Luhn, Ryan A. Rubenzahl, Samuel Halverson +1

Physically motivated Gaussian process (GP) kernels for stellar variability, like the commonly used damped, driven simple harmonic oscillators that model stellar granulation and p-m…

astro-ph.IM2025★ 33 cited

The SPHEREx Satellite Mission

James J. Bock, Asad M. Aboobaker, Joseph Adamo +111

SPHEREx, a NASA explorer satellite launched on 11 March 2025, is carrying out the first all-sky near-infrared spectral survey. The satellite observes in 102 spectral bands from 0.7…