Publications (26)
A spatially resolved optical method to measure thermal diffusivity
F. Sun, S. Mishra, P. H. McGuinness +8
We describe an optical method to directly measure position-dependent thermal diffusivity of reflective single crystal samples across a broad range of temperatures for condensed mat…
Little Red and Blue Dots: simply stratified Broad Line Regions
J. Scholtz, F. D'Eugenio, R. Maiolino +14
It has been claimed that a fraction of the so-called Little Red Dots (LRDs) are characterised by exponential broad line profiles, which have been ascribed to broadening from electr…
Identification and properties of intense star-forming galaxies at redshifts z>10
B. E. Robertson, S. Tacchella, B. D. Johnson +53
Surveys with James Webb Space Telescope (JWST) have discovered candidate galaxies in the first 400 Myr of cosmic time. Preliminary indications have suggested these candidate galaxi…
Creating a zero-order resonator using an optical surface transformation
F. Sun, X. Ge, S. He
A novel zero-order resonator has been designed by an optical surface transformation (OST) method. The resonator proposed here has many novel features. Firstly, the mode volume can…
Discovery of An Apparent Red, High-Velocity Type Ia Supernova at z = 2.9 with JWST
J. D. R. Pierel, M. Engesser, D. A. Coulter +27
We present the JWST discovery of SN 2023adsy, a transient object located in a host galaxy JADES-GS with a host spectroscopic redshift of . Th…
Static magnetic field concentration and enhancement using magnetic materials with positive permeability
F. Sun, S. He
In this paper a novel compressor for static magnetic fields is proposed based on finite embedded transformation optics. When the DC magnetic field passes through the designed devic…
Discovery of a Relativistic Stripped Envelope Type Ic-BL Supernova at z = 2.83 with JWST
M. R. Siebert, C. Decoursey, D. A. Coulter +26
We present JWST NIRCam and NIRSpec observations of a Type Ic supernova (SN Ic) and its host galaxy (JADES-GS+53.13533-27.81457) at . This SN (named SN 2023adta) was ident…
Extending the scanning angle of a phased array antenna by using a null-space medium
F. Sun, S. He
By introducing a columnar null-space region as the reference space, we design a radome that can extend the scanning angle of a phased array antenna (PAA) by a predetermined relatio…
Superconductivity in Strong Spin Orbital Coupling Compound Sb2Se3
P. P. Kong, F. Sun, L. Y. Xing +15
Recently, A2B3 type strong spin orbital coupling compounds such as Bi2Te3, Bi2Se3 and Sb2Te3 were theoretically predicated to be topological insulators and demonstrated through exp…
Confining the light wave by using non-Euclidean transformation optics
F. Sun
A new way to understand why some inhomogeneous dielectric medium can be used for confining the light wave has been given by using non-Euclidean transformation optics. We show that…
Ultrafast Dynamics Evidence of High Temperature Superconductivity in Single Unit Cell FeSe on SrTiO3
Y. C. Tian, W. H. Zhang, F. S. Li +7
The recent observation of high-temperature superconductivity in one unit cell thick FeSe on SrTiO3 (1UC FeSe/STO)1 initiated a new pathway to realizing even higher transition tempe…
Correlated anomalous phase diffusion of coupled phononic modes in a side-band driven resonator
F. Sun, X. Dong, J. Zou +2
The dynamical backaction from a periodically driven optical or microwave cavity can reduce the damping of a mechanical resonator, leading to parametric instability accompanied by s…
Primordial Rotating Disk Composed of 15 Dense Star-Forming Clumps at Cosmic Dawn
S. Fujimoto, M. Ouchi, K. Kohno +43
Early galaxy formation, initiated by the dark matter and gas assembly, evolves through frequent mergers and feedback processes into dynamically hot, chaotic structures. In contrast…
The Lorenz ratio as a guide to scattering contributions to Planckian transport
F. Sun, S. Mishra, U. Stockert +7
In many physical situations in which many-body assemblies exist at temperature , a characteristic quantum-mechanical time scale of approximately can be identified…
Tentative rotation in a galaxy at z14 with ALMA
J. Scholtz, E. Parlanti, S. Carniani +20
We re-analysed ALMA observations of the [OIII]88m emission line in JADES-GS-z14.0, so far the most distant spectroscopically confirmed galaxy at z=14.18. Our analysis shows…
Ultrafast Quasiparticle Dynamics and Electron-Phonon Coupling in (Li0.84Fe0.16)OHFe0.98Se
Q. Wu, H. X. Zhou, Y. L. Wu +8
Distinctive superconducting behaviors between bulk and monolayer FeSe make it challenging to obtain a unified picture of all FeSe-based superconductors. We investigate the ultrafas…
Strong Pseudospin-Lattice Coupling in Sr3Ir2O7: Coherent Phonon Anomaly and Negative Thermal Expansion
L. L. Hu, M. Yang, Y. L. Wu +11
The similarities to cuprates make iridates an interesting potential platform for investigating superconductivity. Equally attractive are their puzzling complex intrinsic interactio…
Transforming magnets
F. Sun, S. He
Based on the form-invariant of Maxwell's equations under coordinate transformations, we extend the theory of transformation optics to transformation magneto-statics, which can desi…
Low-mass bursty galaxies in JADES efficiently produce ionising photons and could represent the main drivers of reionisation
C. Simmonds, S. Tacchella, K. Hainline +21
We study galaxies in JADES Deep to study the evolution of the ionising photon production efficiency, , observed to increase with redshift. We estimate $ξ_{\rm{ion}}…
Discovery of a likely Type II SN at =3.6 with JWST
D. A. Coulter, J. D. R. Pierel, C. DeCoursey +30
Transient astronomy in the early, high-redshift (z > 3) Universe is an unexplored regime that offers the possibility of probing the first stars and the Epoch of Reionization. Durin…
The cold interstellar medium of a normal sub- galaxy at the end of reionization
F. Valentino, S. Fujimoto, C. Giménez-Arteaga +21
We present the results of a ~60-hr observational campaign with ALMA targeting a spectroscopically confirmed and lensed sub- galaxy at z=6.07, identified during the ALMA Le…
Pressure-tuning of bond-directional exchange interactions and magnetic frustration in hyperhoneycomb iridate -
L. S. I. Veiga, M. Etter, K. Glazyrin +14
We explore the response of Ir orbitals to pressure in -, a hyperhoneycomb iridate in proximity to a Kitaev quantum spin liquid (QSL) ground state. X-ra…
Ice inventory towards the protostar Ced 110 IRS4 observed with the James Webb Space Telescope. Results from the ERS Ice Age program
W. R. M. Rocha, M. K. McClure, J. A. Sturm +37
This work focuses on the ice features toward the binary protostellar system Ced 110 IRS 4A and 4B, and observed with JWST as part of the Early Release Science Ice Age collaboration…
ALMA Lensing Cluster Survey: an ALMA galaxy signposting a MUSE galaxy group at z=4.3 behind 'El Gordo'
K. I. Caputi, G. B. Caminha, S. Fujimoto +24
We report the discovery of a Multi Unit Spectroscopic Explorer (MUSE) galaxy group at z=4.32 lensed by the massive galaxy cluster ACT-CL J0102-4915 (aka El Gordo) at z=0.87, associ…
JWST Reveals Two Overmassive Black Hole Candidates in Dwarf Galaxies at z 0.7: Pushing Black Hole Searches into the Dwarf-Galaxy Regime
E. Iani, P. Rinaldi, A. Torralba +35
We report the discovery and characterization of two compact galaxies, Pelias and Neleus, at z ~ 0.71 and z ~ 0.75, identified in MACS J0416.1-2403 and GOODS-North. Both exhibit unu…
A concentrator for static magnetic field
F. Sun, S. He
We propose a compact passive device as a super-concentrator to create an extremely high uniform static magnetic field over 50T in a large two-dimensional free space from a weak bac…