Publications (69)
SHINING, A Survey of Far Infrared Lines in Nearby Galaxies. II: Line-Deficit Models, AGN impact, [CII]-SFR Scaling Relations, and Mass-Metallicity Relation in (U)LIRGS
R. Herrera-Camus, E. Sturm, J. Graciá-Carpio +12
The SHINING survey (Paper I; Herrera-Camus et al. 2018) offers a great opportunity to study the properties of the ionized and neutral media of galaxies from prototypical starbursts…
Mid- and Far-Infrared ISO Limits on Dust Disks around Millisecond Pulsars
Joseph Lazio, J. Fischer
We report 60 and 90 micron observations of 7 millisecond pulsars with ISO. The pulsar PSR B1257+12 is orbited by three planets, and other millisecond pulsars may be orbited by dust…
Broad [CII] line wings as tracer of molecular and multi-phase outflows in infrared bright galaxies
A. W. Janssen, N. Christopher, E. Sturm +13
We report a tentative correlation between the outflow characteristics derived from OH absorption at and [CII] emission at in a sample of 22 loca…
Inflowing gas onto a compact obscured nucleus in Arp 299A: Herschel spectroscopic studies of H2O and OH
N. Falstad, E. González-Alfonso, S. Aalto +1
Aims. We probe the physical conditions in the core of Arp 299A and try to put constraints to the nature of its nuclear power source. Methods. We used Herschel Space Observatory far…
ISO Far-IR Spectroscopy of IR-Bright Galaxies and ULIRGs
J. Fischer, M. L. Luhman, S. Satyapal +16
Based on far-infrared spectroscopy of a small sample of nearby infrared-bright and ultraluminous infrared galaxies (ULIRGs) with the ISO Long Wavelength Spectrometer, we find a dra…
Spatial Coherence Properties of One-Dimensional Exciton-Polariton-Condensates
J. Fischer, I. G. Savenko, M. D. Fraser +6
In this work, we combine a systematic experimental investigation of the power- and temperaturedependent evolution of the spatial coherence function, g(1) (r), in a one-dimensional…
ISO-LWS spectroscopy of Centaurus A: extended star formation
S. J. Unger, P. E. Clegg, G. J. Stacey +9
We present the first full FIR spectrum of Centaurus A (NGC 5128) from 43 - 196.7 um. The data was obtained with the ISO Long Wavelength Spectrometer (LWS). We conclude that the FIR…
Massive Molecular Outflows and Evidence for AGN Feedback from CO Observations
C. Cicone, R. Maiolino, E. Sturm +12
We study the properties of massive, galactic-scale outflows of molecular gas and investigate their impact on galaxy evolution. We present new IRAM PdBI CO(1-0) observations of loca…
On an asymptotic estimate of the -loop correction in perturbative QCD
J. Chýla, J. Fischer, P. KoláÅ
A recently proposed method of estimating the asymptotic behaviour of QCD perturbation theory coefficients is critically reviewed and shown to contain numerous invalid mathematical…
Molecular Gas Inflows and Outflows in Ultraluminous Infrared Galaxies at and one QSO at
R. Herrera-Camus, E. Sturm, J. Graciá-Carpio +12
Aims. We aim to search and characterize inflows and outflows of molecular gas in four ultraluminous infrared galaxies (ULIRGs) at and one distant QSO at . Me…
Feedback and feeding in the context of galaxy evolution with SPICA: direct characterization of molecular outflows and inflows
E. González-Alfonso, L. Armus, F. J. Carrera +28
A far-infrared observatory such as the {\it SPace Infrared telescope for Cosmology and Astrophysics} ({\it SPICA}), with its unprecedented spectroscopic sensitivity, would unveil t…
High-lying OH absorption, [C II] deficits, and extreme ratios in galaxies
E. González-Alfonso, J. Fischer, E. Sturm +22
Herschel/PACS observations of 29 local (Ultra-)Luminous Infrared Galaxies, including both starburst and AGN-dominated sources as diagnosed in the mid-infrared/optical, show that th…
Orbital-selective metal-insulator transition and gap formation above Tc in superconducting Rb1-xFe2-ySe2
Zhe Wang, M. Schmidt, J. Fischer +5
We report on a hierarchy of temperatures Tc < Tgap < Tmet in superconducting Rb1-xFe2-ySe2 observed by THz spectroscopy. Above Tmet = 90 K the material reveals semiconducting chara…
A journey into the tuneable antiferromagnetic spin textures of BiFeO3
A. Haykal, J. Fischer, W. Akhtar +10
Antiferromagnetic thin films are currently generating considerable excitement for low dissipation magnonics and spintronics. However, while tuneable antiferromagnetic textures form…
Excited OH+, H2O+, and H3O+ in NGC 4418 and Arp 220
E. González-Alfonso, J. Fischer, S. Bruderer +15
We report on Herschel/PACS observations of absorption lines of OH+, H2O+ and H3O+ in NGC 4418 and Arp 220. Excited lines of OH+ and H2O+ with E_lower of at least 285 and \sim200 K,…
The Impact of Stellar Populations on the Dynamics of Merger Remnants
B. Rothberg, J. Fischer
Many studies and simulations suggest gas-rich mergers do not contribute significantly to the overall star-formation rate and total mass function of galaxies. The velocity dispersio…
Patterning enhanced tetragonality in BiFeO3 thin films with effective negative pressure by helium implantation
C. Toulouse, J. Fischer, S. Farokhipoor +13
Helium implantation in epitaxial thin films is a way to control the out-of-plane deformation independently from the in-plane strain controlled by epitaxy. In particular, implantati…
The Continuous Electron Beam Accelerator Facility at 12 GeV
P. A. Adderley, S. Ahmed, T. Allison +136
This review paper describes the energy-upgraded CEBAF accelerator. This superconducting linac has achieved 12 GeV beam energy by adding 11 new high-performance cryomodules containi…
Extreme Starbursts in the Local Universe
R. M. Gonzalez Delgado, J. Rodriguez Zaurin, E. Perez +44
The "Extreme starbursts in the local universe" workshop was held at the Insituto de Astrofisica de Andalucia in Granada, Spain on 21-25 June 2010. Bearing in mind the advent of a n…
Far-Infrared ISO Limits on Dust Disks around Millisecond Pulsars
T. J. W. Lazio, J. Fischer, R. S. Foster
We report 60 and 90 micron observations of 7 millisecond pulsars with the ISOPHOT instrument and describe our analysis procedures. No pulsars were detected, and typical (3Ï) upper…
The LiteBIRD Satellite Mission - Sub-Kelvin Instrument
A. Suzuki, P. A. R. Ade, Y. Akiba +149
Inflation is the leading theory of the first instant of the universe. Inflation, which postulates that the universe underwent a period of rapid expansion an instant after its birth…
About Learning in Recurrent Bistable Gradient Networks
J. Fischer, S. Lackner
Recurrent Bistable Gradient Networks are attractor based neural networks characterized by bistable dynamics of each single neuron. Coupled together using linear interaction determi…
Evidence for CO shock excitation in NGC 6240 from Herschel SPIRE spectroscopy
R. Meijerink, L. E. Kristensen, A. Weiss +28
We present Herschel SPIRE FTS spectroscopy of the nearby luminous infrared galaxy NGC 6240. In total 20 lines are detected, including CO J=4-3 through J=13-12, 6 H2O rotational lin…
ISM conditions in z~0.2 Lyman-Break Analogs
A. Contursi, A. J. Baker, S. Berta +16
We present an analysis of far--infrared (FIR) [CII] and [OI] fine structure line and continuum observations obtained with /PACS, and CO(1-0) observations obtained with th…
ECFA Detector R&D Panel, Review Report
The FCAL Collaboration, H. Abramowicz, A. Abusleme +68
Two special calorimeters are foreseen for the instrumentation of the very forward region of an ILC or CLIC detector; a luminometer (LumiCal) designed to measure the rate of low ang…
The Difference Imaging Pipeline for the Transient Search in the Dark Energy Survey
R. Kessler, J. Marriner, M. Childress +60
We describe the difference imaging pipeline (DiffImg) used to detect transients in deep images from the Dark Energy Survey Supernova program (DES-SN) in its first observing season…
Spectroscopic FIR mapping of the disk and galactic wind of M82 with Herschel-PACS
A. Contursi, A. Poglitsch, J. Graciá-Carpio +11
[Abridged] We present maps of the main cooling lines of the neutral atomic gas ([OI] at 63 and 145 micron and [CII] at 158 micron) and in the [OIII] 88 micron line of the starburst…
Outflowing OH in Markarian 231: the ionization rate of the molecular gas
E. González-Alfonso, J. Fischer, S. Bruderer +6
The oxygen-bearing molecular ions OH+, H2O+, and H3O+ are key species that probe the ionization rate of (partially) molecular gas that is ionized by X-rays and cosmic rays permeati…
Chemically Distinct Nuclei and Outflowing Shocked Molecular Gas in Arp 220
R. Tunnard, T. R. Greve, S. Garcia-Burillo +9
We present the results of interferometric spectral line observations of Arp 220 at 3.5mm and 1.2mm from the Plateau de Bure Interferometer (PdBI), imaging the two nuclear disks in…
Modeling the H2O submillimeter emission in extragalactic sources
E. González-Alfonso, J. Fischer, S. Aalto +1
Recent observational studies have shown that H2O emission at (rest) submillimeter wavelengths is ubiquitous in infrared galaxies, both in the local and in the early Universe, sugge…
Simultaneous direct measurement of the electrocaloric and dielectric dynamics of ferroelectrics with microsecond temporal resolution
J. Fischer, J. Döntgen, C. Molin +6
A contactless technique for direct time-resolved measurements of the full dynamics of the adiabatic temperature change in electrocaloric materials is introduced. The infrared radia…
Herschel/PACS spectroscopy of NGC 4418 and Arp 220: H2O, H2^{18}O, OH, ^{18}OH, O I, HCN and NH3
E. González-Alfonso, J. Fischer, J. Graciá-Carpio +14
Herschel/PACS spectroscopy of the luminous infrared galaxies NGC4418 and Arp220 reveals high excitation in H2O, OH, HCN, and NH3. In NGC4418, absorption lines were detected with E_…
A multi-reflection time-of-flight mass spectrometer for the offline ion source of the PUMA experiment
M. Schlaich, J. Fischer, P. Fischer +5
The antiProton Unstable Matter Annihilation experiment (PUMA) at CERN aims at investigating the nucleon composition in the matter density tail of radioactive as well as stable isot…
High-J CO SLEDs in nearby infrared bright galaxies observed by Herschel-PACS
N. Mashian, E. Sturm, A. Sternberg +16
We report the detection of far-infrared (FIR) CO rotational emission from nearby active galactic nuclei (AGN) and starburst galaxies, as well as several merging systems and Ultra-L…
Molecular outflows in local galaxies: Method comparison and a role of intermittent AGN driving
D. Lutz, E. Sturm, A. Janssen +17
We report new detections and limits from a NOEMA and ALMA CO(1-0) search for molecular outflows in 13 local galaxies with high FIR surface brightness, and combine with results from…
Preservation of the High Quality Factor and Accelerating Gradient of Nb3Sn-coated Cavity During Pair Assembly
G. Eremeev, U. Pudasaini, S. Cheban +6
Two CEBAF 5-cell accelerator cavities have been coated with Nb3Sn film using the vapor diffusion technique. One cavity was coated in the Jefferson Lab Nb3Sn cavity coating system,…
Herschel observations and a model for IRAS 08572+3915: a candidate for the most luminous infrared galaxy in the local (z < 0.2) Universe
A. Efstathiou, C. Pearson, D. Farrah +17
We present Herschel photometry and spectroscopy, carried out as part of the Herschel ULIRG survey (HERUS), and a model for the infrared to submillimetre emission of the ultralumino…
Massive molecular outflows and negative feedback in ULIRGs observed by Herschel-PACS
E. Sturm, E. González-Alfonso, S. Veilleux +13
Mass outflows driven by stars and active galactic nuclei are a key element in many current models of galaxy evolution. They may produce the observed black hole-galaxy mass relation…
Focal-plane detector system for the KATRIN experiment
J. F. Amsbaugh, J. Barrett, A. Beglarian +48
The focal-plane detector system for the KArlsruhe TRItium Neutrino (KATRIN) experiment consists of a multi-pixel silicon p-i-n-diode array, custom readout electronics, two supercon…
Quasar Feedback in the Ultraluminous Infrared Galaxy F11119+3257: Connecting the Accretion Disk Wind with the Large-Scale Molecular Outflow
S. Veilleux, A. Bolatto, F. Tombesi +5
In Tombesi et al. (2015), we reported the first direct evidence for a quasar accretion disk wind driving a massive molecular outflow. The target was F11119+3257, an ultraluminous i…
The [CII] 158 um Line Deficit in Ultraluminous Infrared Galaxies Revisited
M. L. Luhman, S. Satyapal, J. Fischer +5
We present a study of the [CII] 157.74 um fine-structure line in a sample of 15 ultraluminous infrared (IR) galaxies (L_IR>10^12 Lsun; ULIRGs) using the Long Wavelength Spectromete…
Herschel spectroscopic observations of the compact obscured nucleus in Zw 049.057
N. Falstad, E. González-Alfonso, S. Aalto +6
Context. The LIRG Zw 049.057 contains a compact obscured nucleus where a considerable amount of the galaxy's luminosity is generated. This nucleus contains a dusty environment that…
Star formation relations and CO SLEDs across the J-ladder and redshift
T. R. Greve, I. Leonidaki, E. M. Xilouris +19
We present FIR-CO luminosity relations () for the full CO rotational ladder from J=1-0 to J=13-12 for 62 local (z < 0.1) (Ultra) Luminou…
Lifetime of the state of Te
H. Mayr, T. Stetz, V. Werner +22
The evolution of the collectivity of tellurium isotopes from mid-shell towards is currently based mainly on properties of the first excited states. To extend structura…
Feasibility of acoustic neutrino detection in ice: Design and performance of the South Pole Acoustic Test Setup (SPATS)
S. Boeser, C. Bohm, F. Descamps +11
The South Pole Acoustic Test Setup (SPATS) has been built to evaluate the acoustic characteristics of the South Pole ice in the 10 to 100 kHz frequency range so that the feasibilit…
Observations of gas and dust at the Galactic Centre
Glenn J. White, H. A. Smith, G. Stacey +4
The Infrared Space Observatory Long wavelength Spectrometerhas been used to map distribution of the emission from a sample of 22 atomic, molecular and ionised lines toward the Circ…
Black hole accretion and star formation as drivers of gas excitation and chemistry in Mrk231
P. P. Van der Werf, K. G. Isaak, R. Meijerink +34
We present a full high resolution SPIRE FTS spectrum of the nearby ultraluminous infrared galaxy Mrk231. In total 25 lines are detected, including CO J=5-4 through J=13-12, 7 rotat…
A Dark Energy Camera Search for an Optical Counterpart to the First Advanced LIGO Gravitational Wave Event GW150914
M. Soares-Santos, R. Kessler, E. Berger +112
We report initial results of a deep search for an optical counterpart to the gravitational wave event GW150914, the first trigger from the Advanced LIGO gravitational wave detector…
ISO LWS Spectroscopy of M82: A Unified Evolutionary Model
J. W. Colbert, M. A. Malkan, P. E. Clegg +9
We present the first complete far-infrared spectrum (43 to 197 um) of M82, the brightest infrared galaxy in the sky, taken with the Long Wavelength Spectrometer of the Infrared Spa…
Molecular gas in the northern nucleus of Mrk273: Physical and chemical properties of the disk and its outflow
R. Aladro, S. König, S. Aalto +12
Aiming to characterise the properties of the molecular gas in the ultraluminous infrared galaxy Mrk273 and its outflow, we used the NOEMA interferometer to image the dense gas mole…
The Mrk 231 molecular outflow as seen in OH
E. González-Alfonso, J. Fischer, J. Graciá-Carpio +12
We report on the Herschel/PACS observations of OH in Mrk 231, with detections in 9 doublets observed within the PACS range, and present radiative transfer models for the outflowing…
Herschel-PACS spectroscopy of IR-bright galaxies at high redshift
E. Sturm, A. Verma, J. Graciá-Carpio +11
We present Herschel-PACS observations of rest-frame mid-infrared and far-infrared spectral line emissions from two lensed, ultra-luminous infrared galaxies at high redshift: MIPS J…
Modeling of Light Production in Inorganic Scintillators
B. Kreider, I. Cox, R. Grzywacz +25
In recent experiments, inorganic scintillators have been used to study the decays of exotic nuclei, providing an alternative to silicon detectors and enabling measurements that wer…
Mid-Infrared Fine Structure Line Ratios in Active Galactic Nuclei Observed with Spitzer IRS: Evidence for Extinction by the Torus
R. P. Dudik, J. C. Weingartner, S. Satyapal +3
We present the first systematic investigation of the [NeV] (14um/24um) and [SIII] (18um/33um) infrared line flux ratios, traditionally used to estimate the density of the ionized g…
Design and characterisation of an antiproton deceleration beamline for the PUMA experiment
J. Fischer, A. Schmidt, N. Azaryan +9
We report on the design and characterization of an antiproton deceleration beamline, based on a pulsed drift tube, for the PUMA experiment at the Antimatter Factory at CERN. The de…
Fast Molecular Outflows in Luminous Galaxy Mergers: Evidence for Quasar Feedback from Herschel
S. Veilleux, M. Melendez, E. Sturm +18
We report the results from a systematic search for molecular (OH-119 um) outflows with Herschel-PACS in a sample of 43 nearby (z < 0.3) galaxy mergers, mostly ultraluminous infrare…
Feasibility of acoustic neutrino detection in ice: First results from the South Pole Acoustic Test Setup (SPATS)
S. Böser, C. Bohm, F. Descamps +11
Astrophysical neutrinos in the EeV range (particularly those generated by the interaction of cosmic rays with the cosmic microwave background) promise to be a valuable tool to stud…
Far-Infrared Line Deficits in Galaxies with Extreme Lfir/MH2 Ratios
J. Graciá-Carpio, E. Sturm, S. Hailey-Dunsheath +13
We report initial results from the far-infrared fine structure line observations of a sample of 44 local starbursts, Seyfert galaxies and infrared luminous galaxies obtained with t…
SPICA and the Chemical Evolution of Galaxies: The Rise of Metals and Dust
J. A. Fernández-Ontiveros, L. Armus, M. Baes +33
The physical processes driving the chemical evolution of galaxies in the last cannot be understood without directly probing the dust-obscured phase of star-for…
Herschel-PACS Observations of Far-IR CO Line Emission in NGC 1068: Highly Excited Molecular Gas in the Circumnuclear Disk
S. Hailey-Dunsheath, E. Sturm, J. Fischer +13
We report the detection of far-IR CO rotational emission from the prototypical Seyfert 2 galaxy NGC 1068. Using Herschel-PACS, we have detected 11 transitions in the J_upper=14-30…
Molecular outflows in local ULIRGs: energetics from multi-transition OH analysis
E. González-Alfonso, J. Fischer, H. W. W. Spoon +11
We report on the energetics of molecular outflows in 14 local Ultraluminous Infrared Galaxies (ULIRGs) that show unambiguous outflow signatures (P-Cygni profiles or high-velocity a…
Herschel observations of water vapour in Markarian 231
E. González-Alfonso, J. Fischer, K. Isaak +32
The Ultra Luminous InfraRed Galaxy Mrk 231 reveals up to seven rotational lines of water (H2O) in emission, including a very high-lying (E_{upper}=640 K) line detected at a 4sigma…
First detection of the 448 GHz ortho-H2O line at high redshift: probing the structure of a starburst nucleus at z = 3.63
C. Yang, E. González-Alfonso, A. Omont +4
Submillimeter rotational lines of H2O are a powerful probe in warm gas regions of the ISM, tracing scales and structures ranging from kpc disks to the most compact and dust-obscure…
Galaxy evolution studies with the SPace IR telescope for Cosmology and Astrophysics (SPICA): the power of IR spectroscopy
L. Spinoglio, A. Alonso-Herrero, L. Armus +65
IR spectroscopy in the range 12-230 micron with the SPace IR telescope for Cosmology and Astrophysics (SPICA) will reveal the physical processes that govern the formation and evolu…
A Dark Energy Camera Search for Missing Supergiants in the LMC After the Advanced LIGO Gravitational Wave Event GW150914
J. Annis, M. Soares-Santos, E. Berger +104
The collapse of the core of a star is expected to produce gravitational radiation. While this process will usually produce a luminous supernova, the optical signatue could be sublu…
SHINING, A Survey of Far Infrared Lines in Nearby Galaxies. I: Survey Description, Observational Trends, and Line Diagnostics
R. Herrera-Camus, E. Sturm, J. Graciá-Carpio +12
We use the Herschel/PACS spectrometer to study the global and spatially resolved far-infrared (FIR) fine-structure line emission in a sample of 52 galaxies that constitute the SHIN…
A deep Herschel/PACS observation of CO(40-39) in NGC 1068: a search for the molecular torus
A. W. Janssen, S. Bruderer, E. Sturm +14
Emission from high-J CO lines in galaxies has long been proposed as a tracer of X-ray dominated regions (XDRs) produced by AGN. Of particular interest is the question of whether th…
The Herschel Comprehensive (U)LIRG Emission Survey (HerCULES): CO Ladders, fine structure lines, and neutral gas cooling
M. J. F. Rosenberg, P. P. van der Werf, S. Aalto +27
(Ultra) Luminous Infrared Galaxies ((U)LIRGs) are objects characterized by their extreme infrared (8-1000 m) luminosities (L and …
Reconstructing Neural Parameters and Synapses of arbitrary interconnected Neurons from their Simulated Spiking Activity
J. Fischer, P. Manoonpong, S. Lackner
To understand the behavior of a neural circuit it is a presupposition that we have a model of the dynamical system describing this circuit. This model is determined by several para…