Noah Franz
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View article: Optimizing Kilonova Searches: A Case Study of the Type IIb SN 2025ulz in the Localization Volume of the Low-significance Gravitational Wave Event S250818k
Optimizing Kilonova Searches: A Case Study of the Type IIb SN 2025ulz in the Localization Volume of the Low-significance Gravitational Wave Event S250818k Open
Kilonovae, the ultraviolet/optical/infrared counterparts to binary neutron star mergers, are an exceptionally rare class of transients. Optical follow-up campaigns are plagued by contaminating transients, which may mimic kilonovae but do n…
View article: The First Radio-bright Off-nuclear Tidal Disruption Event AT 2024tvd Reveals the Fastest-evolving Double-peaked Radio Emission
The First Radio-bright Off-nuclear Tidal Disruption Event AT 2024tvd Reveals the Fastest-evolving Double-peaked Radio Emission Open
We present the first multiepoch broadband radio and millimeter monitoring of an off-nuclear tidal disruption event (TDE) using the Very Large Array, the Atacama Large Millimeter/submillimeter Array, the Allen Telescope Array, the Arcminute…
View article: The Open mulTiwavelength Transient Event Repository (OTTER): Infrastructure Release and Tidal Disruption Event Catalog
The Open mulTiwavelength Transient Event Repository (OTTER): Infrastructure Release and Tidal Disruption Event Catalog Open
Multiwavelength analyses of astrophysical transients are essential for understanding the physics of these events. To make such analyses more efficient and effective, we present the Open mulTiwavelength Transient Event Repository (OTTER), a…
View article: Late-time Hubble Space Telescope Ultraviolet Spectra of SN 2023ixf and SN 2024ggi Show Ongoing Interaction with Circumstellar Material
Late-time Hubble Space Telescope Ultraviolet Spectra of SN 2023ixf and SN 2024ggi Show Ongoing Interaction with Circumstellar Material Open
We present far- and near-ultraviolet (UV) spectra of the Type II supernovae (SNe) SN~2023ixf from days 199 to 722 and SN~2024ggi at days 41 and 232. Both supernovae show broad, blueshifted, and asymmetric UV emission lines with an initial …
View article: The Multi-Wavelength Context of Delayed Radio Emission in TDEs: Evidence for Accretion-Driven Outflows
The Multi-Wavelength Context of Delayed Radio Emission in TDEs: Evidence for Accretion-Driven Outflows Open
Recent observations presented in Cendes et al. (2024a) show that optically selected tidal disruption events (TDEs) commonly produce delayed radio emission that can peak years post-disruption. Here, we explore the multi-wavelength propertie…
View article: JWST and Ground-based Observations of the Type Iax Supernovae SN 2024pxl and SN 2024vjm: Evidence for Weak Deflagration Explosions
JWST and Ground-based Observations of the Type Iax Supernovae SN 2024pxl and SN 2024vjm: Evidence for Weak Deflagration Explosions Open
We present panchromatic optical $+$ near-infrared (NIR) $+$ mid-infrared (MIR) observations of the intermediate-luminosity Type Iax supernova (SN Iax) 2024pxl and the extremely low-luminosity SN Iax 2024vjm. JWST observations provide unpre…
View article: Photometry and Spectroscopy of SN 2024pxl: A Luminosity Link Among Type Iax Supernovae
Photometry and Spectroscopy of SN 2024pxl: A Luminosity Link Among Type Iax Supernovae Open
We present extensive ultraviolet to optical photometric and optical to near-infrared (NIR) spectroscopic follow-up observations of the nearby intermediate-luminosity ($M_V = -$16.81$\pm$0.19~mag) Type Iax supernova (SN) 2024pxl in NGC 6384…
View article: Asymmetries and Circumstellar Interaction in the Type II SN 2024bch
Asymmetries and Circumstellar Interaction in the Type II SN 2024bch Open
We present a comprehensive multi-epoch photometric and spectroscopic study of SN 2024bch, a nearby (19.9 Mpc) Type II supernova (SN) with prominent early high-ionization emission lines. Optical spectra from 2.8 days after the estimated exp…
View article: The Type I superluminous supernova catalogue I: light-curve properties, models, and catalogue description
The Type I superluminous supernova catalogue I: light-curve properties, models, and catalogue description Open
We present the most comprehensive catalogue to date of Type I superluminous supernovae (SLSNe), a class of stripped-envelope supernovae (SNe) characterized by exceptionally high luminosities. We have compiled a sample of 262 SLSNe reported…
View article: The Type I Superluminous Supernova Catalog I: Light Curve Properties, Models, and Catalog Description
The Type I Superluminous Supernova Catalog I: Light Curve Properties, Models, and Catalog Description Open
We present the most comprehensive catalog to date of Type I Superluminous Supernovae (SLSNe), a class of stripped envelope supernovae (SNe) characterized by exceptionally high luminosities. We have compiled a sample of 262 SLSNe reported t…
View article: Tip of the Red Giant Branch Bounds on the Neutrino Magnetic Dipole Moment Revisited
Tip of the Red Giant Branch Bounds on the Neutrino Magnetic Dipole Moment Revisited Open
We use a novel method to constrain the neutrino magnetic dipole moment ($μ_ν$) using the empirically-calibrated tip of the red giant branch I-band magnitude that fully accounts for uncertainties in stellar physics. Our method uses machine …
View article: Tip of the Red Giant Branch Bounds on the Neutrino Magnetic Dipole Moment Revisited
Tip of the Red Giant Branch Bounds on the Neutrino Magnetic Dipole Moment Revisited Open
Reproduction Package for the Paper "Tip of the Red Giant Branch Bounds on the Neutrino Magnetic Dipole Moment Revisited". File Organization MESA: MESA modifications to include losses due to the neutrino magnetic dipole mom…
View article: Tip of the Red Giant Branch Bounds on the Neutrino Magnetic Dipole Moment Revisited
Tip of the Red Giant Branch Bounds on the Neutrino Magnetic Dipole Moment Revisited Open
Reproduction Package for the Paper "Tip of the Red Giant Branch Bounds on the Neutrino Magnetic Dipole Moment Revisited". File Organization MESA: MESA modifications to include losses due to the neutrino magnetic dipole mom…
View article: The Breakthrough Listen Search for Intelligent Life: Technosignature Search of Transiting TESS Targets of Interest
The Breakthrough Listen Search for Intelligent Life: Technosignature Search of Transiting TESS Targets of Interest Open
The Breakthrough Listen (BL) Initiative, as part of its larger mission, is performing the most thorough technosignature search of nearby stars. Additionally, BL is collaborating with scientists working on NASA’s Transiting Exoplanet Survey…
View article: Radio Technosignature Searches of TESS Targets
Radio Technosignature Searches of TESS Targets Open
A practical method to perform a Search for Extraterrestrial Intelligence is to search the sky for extraterrestrial signals, also known as technosignatures. A technosignature search of many nearby systems is currently underway by the Breakt…