A5074977888- Superconducting and THz Device Technology
- Galaxies: Formation, Evolution, Phenomena
- Thermal Radiation and Cooling Technologies
- Astronomy and Astrophysical Research
- Radio Frequency Integrated Circuit Design
- Terahertz technology and applications
- Microwave Engineering and Waveguides
- Astrophysical Phenomena and Observations
- Astrophysics and Star Formation Studies
- Radio Astronomy Observations and Technology
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Photonic and Optical Devices
- Spectroscopy and Laser Applications
- Astronomical Observations and Instrumentation
- Advanced Thermodynamic Systems and Engines
- Physics of Superconductivity and Magnetism
- Atomic and Molecular Physics
- Stellar, planetary, and galactic studies
- Scientific Research and Discoveries
- Calibration and Measurement Techniques
- CCD and CMOS Imaging Sensors
- Mass Spectrometry Techniques and Applications
- Semiconductor Quantum Structures and Devices
- Solar and Space Plasma Dynamics
Jet Propulsion Laboratory
2020-2024
California Institute of Technology
2020-2024
Goethe University Frankfurt
2019
Université Paris-Sud
2018
Institut d'Astrophysique Spatiale
2018
Centre National de la Recherche Scientifique
2018
Delft University of Technology
2011-2017
Leiden University
2012-2017
Leiden Observatory
2012-2017
Western University
1984
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation S. J. C. Yates, A. Baselmans, Endo, R. M. Janssen, L. Ferrari, P. Diener, Baryshev; Photon noise limited radiation detection with lens-antenna coupled microwave kinetic inductance detectors. Appl. Phys. Lett. 15 August 2011; 99 (7): 073505. https://doi.org/10.1063/1.3624846 Download citation file: Ris (Zotero)...
Low luminosity radio-loud active galactic nuclei (AGN) are generally found in massive red elliptical galaxies, where they thought to be powered through gas accretion from their surrounding hot halos a radiatively inefficient manner. These AGN often referred as "low-excitation" radio galaxies (LERGs). When with young stellar population and star formation, usually high-power radiatively-efficient ("high-excitation", HERG). Using sample of low-redshift identified within the Sloan Digital Sky...
Future astrophysics and cosmic microwave background space missions operating in the far-infrared to millimetre part of spectrum will require very large arrays ultra-sensitive detectors combination with high multiplexing factors efficient low-noise low-power readout systems. We have developed a demonstrator system suitable for such applications. The combines 961 pixel imaging array based upon Microwave Kinetic Inductance Detectors (MKIDs) capable reading out all pixels simultaneously only one...
We demonstrate photon noise limited performance in both phase and amplitude readout microwave kinetic inductance detectors (MKIDs) consisting of NbTiN Al, down to 100 fW optical power. simulate the far field beam pattern lens-antenna system used couple radiation into MKID derive an aperture efficiency 75%. This is close theoretical maximum 80% for a single-moded detector. The patterns are verified by detailed analysis coupling within our measurement setup.
Relativistic jets are believed to have a substantial impact on the gas dynamics and evolution of interstellar medium (ISM) their host galaxies. In this paper, we aim draw link between simulations observable signatures jet-ISM interactions by analyzing emission morphology kinematics resulting from jet-induced shocks in simulated disc spherical systems. We find that laterally expanding forward shock energy bubble sweeping through ISM causes large-scale outflows, creating shocked high-velocity...
It has long been suspected that powerful radio sources may lower the efficiency with which stars form from molecular gas in their host galaxy, but so far, alternative mechanisms, particular related to stellar mass distribution massive bulges of galaxies, are not ruled out. We present new ALMA CO(1-0) interferometry cold nearby (z=0.0755), (M_stellar=4x10^11 M_sun), isolated, late-type spiral galaxy 2MASSX J23453269-044925, is outstanding for having two pairs powerful, giant jets, and a...
The physical link between AGN activity and the suppression of star formation in their host galaxies is one major open questions feedback scenario. Spitzer space mission revealed a subset powerful nearby radio with unusually bright line emission from warm ( T ≥ 100 K) molecular hydrogen, while typical star-formation tracers such as polycyclic aromatic hydrocarbons (PAHs) or dust continuum have been exceptionally faint undetected. Here, we present JWST NIRSpec MIRI MRS IFU observations best...
Abstract We present observations of CO(1–0) and CO(2–1) lines from the Institut de radioastronomie millimétrique 30 m telescope toward 20 nearby, optically luminous type 2 quasars (QSO2s) [C ii ] 158 μ line Stratospheric Observatory for Infrared Astronomy five QSO2s in CO sample 1 (QSO1s). In traditional evolutionary scenario explaining different types QSOs, obscured emerge gas-rich mergers observed as infrared galaxies (LIRGs) then turn into unobscured QSO1s black holes clear out obscuring...
We report measurements characterizing the performance of a kinetic inductance detector array designed for wavelength 25 microns and very low optical background level suitable applications such as far-infrared instrument on cryogenically cooled space telescope. In pulse-counting mode operation at flux, detectors can resolve individual 25-micron photons. an integrating mode, remain photon noise limited over more than 6 orders magnitude in absorbed power from 70 zW to 200 fW, with limiting...
An integrated filterbank (IFB) in combination with microwave kinetic inductance detectors (MKIDs), both based on superconducting resonators, could be used to make broadband submillimeter imaging spectrographs that are compact and flexible. In order investigate the possibility of adopting an IFB configuration for DESHIMA (Delft SRON High-redshift Mapper), we study basic properties circuit using electromagnetic simulation. idealized situation, one integrate onto a 4-inch wafer 9 pixel × 920...
We use the results of relativistic hydrodynamic simulations jet-interstellar medium (ISM) interactions in a galaxy with radio-loud AGN to quantify extent ionization central few kpcs gaseous galactic disc. perform post-process radiative transfer radiation through simulated jet-perturbed disc estimate photo-ionization by an incident luminosity 1045 erg s-1. also map gas that is collisionally ionized due shocks driven jet. The analysis was carried out for similar jet power (1045 s-1) but...
Distant, dusty and extremely luminous galaxies form a key component of the high redshift universe, tracing period intense cosmic activity that ultimately gave rise to present-day universe. These highly galaxies, first detected in ground-based submillimeter region, are however optically very faint, which hampers identification optical counterpart measurement redshift. We developing new direct-detection submm spectrograph DESHIMA. By taking advantage rapidly advancing technology...
Total cross sections for the dissociative recombination of H3+ and its isotopic variants are presented. Results HD2+ differ in form from those symmetric D3+ ions, probably because different vibrational modes. The relevance these to H- formation is discussed.
We investigate angular emission distributions of the $1s$ photoelectrons ${\mathrm{N}}_{2}$ ionized by linearly polarized synchrotron radiation at $h\ensuremath{\nu}=40\text{ }\text{ }\mathrm{keV}$. As expected, nondipole contributions cause a very strong forward-backward asymmetry in measured distributions. In addition, we observe an unexpected with respect to polarization direction, which depends on direction molecular fragmentation. particular, are predominantly emitted forward nitrogen...
The Origins Space Telescope (Origins) will have a 5.9-m diameter primary mirror cooled to 4.5 K and be equipped with three instruments, two of which cover the far-IR (λ = 25 588 μm). These instruments require large arrays (∼104 detectors) ultrasensitive detectors, noise equivalent powers (NEPs) as low 3 × 10 − 20 W Hz 1/2. Kinetic inductance detectors (KIDs) already demonstrated array format, modularity, readout multiplexing density requirements for Origins; only aspect that requires...
In the next decades millimeter and sub-mm astronomy requires large format imaging arrays broad-band spectrometers to complement high spatial spectral resolution of Atacama Large Millimeter/sub-millimeter Array. The desired sensors for these instruments should have a background limited sensitivity optical efficiency enable thousands pixels in size. Hybrid microwave kinetic inductance detectors consisting NbTiN Al shown satisfy requirements. We present second generation hybrid NbTiN-Al MKIDs,...
We investigate $K$-shell ionization of ${\mathrm{N}}_{2}$ at 40 keV photon energy. Using a cold target recoil ion momentum spectroscopy reaction microscope, we determine the vector momenta photoelectron, Auger electron, and both ${\mathrm{N}}^{+}$ fragments. These fully differential data show that dissociation process ${\mathrm{N}}_{2}^{2+}$ is significantly modified not only by photoelectron but also emitted electron. find energy introduced partitioned with ratio approximately...
We present an analysis of new VLT/MUSE optical imaging spectroscopic data 2MASX J23453268–0449256 (J2345–0449), a nearby ( z = 0.0755) massive M stellar 4 × 10 11 ⊙ ) spiral galaxy. This is particularly interesting source for study active galactic nucleus (AGN) feedback since it hosts two pairs bright, giant radio jets and massive, luminous X-ray halo, but has no bulge. The galaxy 24 kpc wide ring molecular gas, source-averaged star formation rate that factors 30 to 70 lower than expected...
The physical link between AGN activity and the suppression of star formation in their host galaxies is one major open questions feedback. Spitzer space mission revealed a subset nearby radio with unusually bright line emission from warm ($T\ge 100$ K) H$_2$, while typical star-formation tracers were exceptionally faint or undetected. We present JWST NIRSpec MIRI IFU observations 3C 326 N at z=0.09 identify 19 ro-vibrational H$_2$ lines that probe hot ($T\sim 1000$ gas as well rotational 0--0...
We report measurements characterizing the performance of a kinetic inductance detector array designed for wavelength 25 microns and very low optical background level suitable applications such as far-infrared instrument on cryogenically cooled space telescope. In pulse counting mode operation at flux, detectors can resolve individual 25-micron photons. an integrating mode, remain photon noise limited over more than six orders magnitude in absorbed power from 70 zW to 200 fW, with limiting...