Jackson Sipple
A5013919466- Galaxies: Formation, Evolution, Phenomena
- Antenna Design and Optimization
- Astronomy and Astrophysical Research
- Advanced Optical Sensing Technologies
- Astrophysics and Cosmic Phenomena
- Millimeter-Wave Propagation and Modeling
- Radio Astronomy Observations and Technology
- Optical measurement and interference techniques
- Dark Matter and Cosmic Phenomena
- Adaptive optics and wavefront sensing
- Gamma-ray bursts and supernovae
- Stellar, planetary, and galactic studies
- Cosmology and Gravitation Theories
- Pulsars and Gravitational Waves Research
- Relativity and Gravitational Theory
University of California, Berkeley
2022-2025
University of Pennsylvania
2024-2025
Abstract In fuzzy dark matter (FDM) cosmologies, the consists of ultralight bosons (m ≲ 10−20 eV). The astrophysically large de Broglie wavelengths such particles hinder formation low-mass halos. This implies a testable prediction: corresponding suppression in faint-end ultraviolet luminosity function (UVLF) galaxies. Notably, recent estimates UVLF at z ∼ 5 − 9 Hubble Frontier Fields, behind foreground lensing clusters, probe up to five magnitudes fainter than typical (“blank-field”)...
Abstract A recent ultraviolet luminosity function (UVLF) analysis in the Hubble Frontier Fields, behind foreground lensing clusters, has helped solidify estimates of faint-end z ∼ 5–9 UVLF at up to 5 mag fainter than field. These measurements provide valuable information regarding role low-luminosity galaxies reionizing universe and can help calibrating expectations for JWST observations. We fit a semiempirical model lensed previous data from Hubble. This constrains average star formation...
ABSTRACT Detection of the faint 21 cm line emission from Cosmic Dawn and Epoch Reionization will require not only exquisite control over instrumental calibration systematics to achieve necessary dynamic range observations but also validation analysis techniques demonstrate their statistical properties signal loss characteristics. A key ingredient in achieving this is ability perform high-fidelity simulations kinds data that are produced by large, many-element, radio interferometric arrays...
We present BVRI and unfiltered Clear light curves of 70 stripped-envelope supernovae (SESNe), observed between 2003 2020, from the Lick Observatory Supernova Search (LOSS) follow-up program. Our SESN sample consists 19 spectroscopically normal SNe~Ib, two peculiar SNe Ib, six SN Ibn, 14 Ic, one ten Ic-BL, 15 IIb, ambiguous IIb/Ib/c, superluminous SNe. photometry has (on a per-SN basis) mean coverage 81 photometric points (median 58 points) cadence 3.6d 1.2d). From our full sample, subset 38...
Abstract Observations with radio arrays that target the 21-cm signal originating from early Universe suffer a variety of systematic effects. An important class these are reflections and spurious couplings between antennas. We apply Hamiltonian Monte Carlo sampler to modelling mitigation systematics in simulated Hydrogen Epoch Reionisation Array (HERA) data. This method allows us form statistical uncertainty estimates for both our models recovered visibilities, which is an ingredient...
A recent ultraviolet luminosity function (UVLF) analysis in the Hubble Frontier Fields, behind foreground lensing clusters, has helped solidify estimates of faint-end $z \sim 5-9$ UVLF at up to five magnitudes fainter than field. These measurements provide valuable information regarding role low galaxies reionizing universe and can help calibrating expectations for JWST observations. We fit a semi-empirical model lensed previous data from Hubble. This constrains average star formation...