Publications (30)
Energy-momentum mapping of d-derived Au(111) states in a thin film
P. M. Sheverdyaeva, R. Requist, P. Moras +5
The quantum well states of a film can be used to sample the electronic structure of the parent bulk material and determine its band parameters. We highlight the benefits of two-dim…
Integrated Filterbank for DESHIMA: A Submillimeter Imaging Spectrograph Based on Superconducting Resonators
A. Endo, P. van der Werf, R. M. J. Janssen +6
An integrated filterbank (IFB) in combination with microwave kinetic inductance detectors (MKIDs), both based on superconducting resonators, could be used to make broadband submill…
Measurements and analysis of optical crosstalk in a microwave kinetic inductance detector array
L. Bisigello, S. J. C. Yates, L. Ferrari +2
The main advantage of Microwave Kinetic Inductance Detector arrays (MKID) is their multiplexing capability, which allows for building cameras with a large number of pixels and good…
A dual-band millimeter-wave kinetic inductance camera for the IRAM 30-meter telescope
A. Monfardini, A. Benoit, A. Bideaud +22
Context. The Neel IRAM KIDs Array (NIKA) is a fully-integrated measurement system based on kinetic inductance detectors (KIDs) currently being developed for millimeter wave astrono…
Ab initio analysis of the x-ray absorption spectrum of the myoglobin-carbon monoxide complex: Structure and vibrations
G. Veronesi, C. Degli Esposti Boschi, L. Ferrari +4
We present a comparison between Fe K-edge x-ray absorption spectra of carbonmonoxy-myoglobin and its simulation based on density-functional theory determination of the structure an…
AMKID -- a large KID-based camera at the APEX telescope
N. Reyes, A. Weiss, S. J. C. Yates +26
The thermal emission at sub-millimeter wavelengths carries unique information in many astronomical applications ranging from disks and planet formation around young stars, to galax…
Photometry and spectroscopy of the Type Icn supernova 2021ckj: The diverse properties of the ejecta and circumstellar matter of Type Icn SNe
T. Nagao, H. Kuncarayakti, K. Maeda +20
We present photometric and spectroscopic observations of the Type Icn supernova (SN) 2021ckj. Spectral modeling of SN 2021ckj reveals that its composition is dominated by oxygen, c…
Discovery and Follow-up of ASASSN-23bd (AT 2023clx): The Lowest Redshift and Least Luminous Tidal Disruption Event To Date
W. B. Hoogendam, J. T. Hinkle, B. J. Shappee +23
We report the All-Sky Automated Survey for SuperNovae discovery of the tidal disruption event (TDE) ASASSN-23bd (AT 2023clx) in NGC 3799, a LINER galaxy with no evidence of strong…
A simple phase-field approximation of the Steiner problem in dimension two
A. Chambolle, B. Merlet, L. Ferrari
In this paper we consider the branched transportation problem in 2D associated with a cost per unit length of the form where denotes the amount of transported mass an…
Electronic structure of Graphene/Co interfaces
Daniela Pacilé, Simone Lisi, Iolanda Di Bernardo +12
Photoemission, from core levels and valence band, and low-energy electron diffraction (LEED) have been employed to investigate the electronic and structural properties of novel gra…
Effect of total dose proton irradiation on the performance of Kinetic Inductance Detectors for far-Infrared space observatory
A. Besnard, G. Conenna, V. Sauvage +5
Kinetic Inductance Detectors (KIDs) are a promising technology for future space missions, where exposure to high-energy particles may affect detector performance. In this work, we…
Observational diversity of bright long-lived Type II supernovae
T. Nagao, T. M. Reynolds, H. Kuncarayakti +21
In various types of supernovae (SNe), strong interaction between the SN ejecta and circumstellar material (CSM) has been reported. This raises questions on their progenitors and ma…
High optical efficiency and photon noise limited sensitivity of microwave kinetic inductance detectors using phase readout
R. M. J. Janssen, J. J. A. Baselmans, A. Endo +4
We demonstrate photon noise limited performance in both phase and amplitude readout in microwave kinetic inductance detectors (MKIDs) consisting of NbTiN and Al, down to 100 fW of…
A kilo-pixel imaging system for future space based far-infrared observatories using microwave kinetic inductance detectors
J. J. A. Baselmans, J. Bueno, S. J. C. Yates +15
Future astrophysics and cosmic microwave background space missions operating in the far-infrared to millimetre part of the spectrum will require very large arrays of ultra-sensitiv…
Nebular Phase Evolution of SN 2023ixf (I): From Circumstellar Infrared Echo to the onset of in-situ Dust Formation in a Type II Supernova
Avinash Singh, S. Goto, A. Sarangi +58
We present optical and near-infrared (NIR) photometric and spectroscopic observations of the Type II supernova SN 2023ixf spanning 150 to 750 days, combined with published early-ti…
SAGACE: the Spectroscopic Active Galaxies And Clusters Explorer
P. De Bernardis, D. Bagliani, A. Bardi +42
The SAGACE experiment consists of a mm/sub-mm telescope with a 3-m diameter primary mirror, coupled to a cryogenic multi-beam differential spectrometer. SAGACE explores the sky in…
Novel aspects and strong correlation in the electronic structure of SrFeMoO
Sugata Ray, Priya Mahadevan, Ashwani Kumar +5
We investigate the electronic structure of SrFeMoO combining photoemission spectroscopy with a wide range of photon energies and electronic structure calculations based on…
SN 2024ggi: another year, another striking Type II supernova
K. Ertini, T. A. Regna, L. Ferrari +19
SN 2024ggi is a Type II supernova that exploded in the nearby galaxy NGC 3621 at a distance of approximately 7 Mpc, making it one of the closest supernovae of the decade. This SN s…
SN 2021gno: a Calcium-rich transient with double-peaked light curves
K. Ertini, G. Folatelli, L. Martinez +52
We present extensive ultraviolet (UV) and optical photometric and optical spectroscopic follow-up of supernova (SN)~2021gno by the "Precision Observations of Infant Supernova Explo…
Magnetism and the Weiss Exchange Field - A Theoretical Analysis Inspired by Recent Experiments
C. Albert, L. Ferrari, J. Froehlich +1
The huge spin precession frequency observed in recent experiments with spin-polarized beams of hot electrons shot through magnetized films is interpreted as being caused by Zeeman…
The hydrogen-free circumstellar interaction in the Type Ib supernova 2021efd: A clue to the mechanism of the helium-layer stripping
N. Pyykkinen, T. Nagao, H. Kuncarayakti +27
Stripped-envelope supernovae (SESNe), including Type IIb, Ib, and Ic supernovae (SNe), originate from the explosions of massive stars whose outer envelopes have been largely remove…
Late-time H/He-poor circumstellar interaction in the type-Ic supernova SN 2021ocs: an exposed oxygen-magnesium layer and extreme stripping of the progenitor
H. Kuncarayakti, K. Maeda, L. Dessart +14
Supernova (SN) 2021ocs was discovered in the galaxy NGC 7828 () within the interacting system Arp 144, and subsequently classified as a normal type-Ic SN around peak b…
Magnetic decoupling of ferromagnetic metals through a graphene spacer
I. Grimaldi, M. Papagno, L. Ferrari +4
We study the magnetic coupling between different ferromagnetic metals (FMs) across a graphene (G) layer, and the role of graphene as a thin covalent spacer. Starting with G grown o…
JWST Observations of SN 2024ggi II: NIRSpec Spectroscopy and CO Modeling at 285 and 385 Days Past the Explosion
T. Mera, C. Ashall, P. Hoeflich +20
We present James Webb Space Telescope (JWST) NIRSpec observations of SN~2024ggi, spanning wavelengths of 1.7--5.5 micron at +285.51 and +385.27 days post-explosion. These nebular s…
The nebular phase of SN 2024ggi: a low-mass progenitor with no signs of interaction
L. Ferrari, G. Folatelli, K. Ertini +14
Context: SN 2024ggi is a Type II supernova (SN) discovered in the nearby galaxy NGC 3621 (D Mpc) on 2024 April 03.21 UT. Its proximity enabled a detailed investi…
Photon noise limited radiation detection with lens-antenna coupled Microwave Kinetic Inductance Detectors
S. J. C. Yates, J. J. A. Baselmans, A. Endo +4
Microwave Kinetic Inductance Detectors (MKIDs) have shown great potential for sub-mm instrumentation because of the high scalability of the technology. Here we demonstrate for the…
ORIGIN: Metal Creation and Evolution from the Cosmic Dawn
J. W. den Herder, L. Piro, T. Ohashi +156
ORIGIN is a proposal for the M3 mission call of ESA aimed at the study of metal creation from the epoch of cosmic dawn. Using high-spectral resolution in the soft X-ray band, ORIGI…
Spin-dependent gap in graphene on a magnetic substrate
P. M. Sheverdyaeva, G. Bihlmayer, E. Cappelluti +12
We present a detailed analysis of the electronic properties of graphene/Eu/Ni(111). By using angle and spin-resolved photoemission spectroscopy and ab initio calculations, we show…
Performance of Hybrid NbTiN-Al Microwave Kinetic Inductance Detectors as Direct Detectors for Sub-millimeter Astronomy
R. M. J. Janssen, J. J. A. Baselmans, A. Endo +4
In the next decades millimeter and sub-mm astronomy requires large format imaging arrays and broad-band spectrometers to complement the high spatial and spectral resolution of the…
Some statistics on permutations avoiding generalized patterns
A. Bernini, m. Bouvel, L. Ferrari
In the last decade a huge amount of articles has been published studying pattern avoidance on permutations. From the point of view of enumeration, typically one tries to count perm…