Marc Mertens
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View article: SOFIA FEEDBACK Survey: The Eagle Nebula in [C II] and Molecular Lines
SOFIA FEEDBACK Survey: The Eagle Nebula in [C II] and Molecular Lines Open
We characterize the physical conditions and energy budget of the M16 H II region using SOFIA FEEDBACK observations of the [C II] 158 $μ$m line. The O stars in the $\sim 10^{4}~{\rm M}_{\odot}$ NGC 6611 cluster powering this H II region hav…
View article: C4 plants respond to phosphate starvation differently than C3 plants
C4 plants respond to phosphate starvation differently than C3 plants Open
C4 photosynthesis concentrates CO2 around Rubisco, thereby decreasing photorespiration and leading to greater productivity. C4 photosynthesis evolved several times independently in different plant families including monocots and dicots. Be…
View article: Measuring Interstellar Carbon Abundance via 158 <i>μ</i>m [C <scp>ii</scp>] Absorption with SOFIA—A Potential Detection and Proof-of-concept for Depletion Studies with Future Far-IR Facilities
Measuring Interstellar Carbon Abundance via 158 <i>μ</i>m [C <span>ii</span>] Absorption with SOFIA—A Potential Detection and Proof-of-concept for Depletion Studies with Future Far-IR Facilities Open
Carbon plays key roles in the interstellar medium (ISM)—as a constituent of dust, as the carrier of the dominant far-infrared (FIR) cooling line, and as a component of various important molecules. But despite this, there are very few measu…
View article: SOFIA/upGREAT Imaging Spectroscopy of the [C <scp>ii</scp>] 158 <i>μ</i>m Fine-structure Line toward the Sgr A Region in the Galactic Center
SOFIA/upGREAT Imaging Spectroscopy of the [C <span>ii</span>] 158 <i>μ</i>m Fine-structure Line toward the Sgr A Region in the Galactic Center Open
We present SOFIA/upGREAT velocity-resolved spectral imaging and analysis of the λ 158 μ m [C ii ] spectral line toward the central 80 by 43 pc region of the Central Molecular Zone of the Galaxy. The field we imaged with 14″ (0.6 pc) spatia…
View article: SOFIA/upGREAT far-infrared spectroscopy of bright rimmed pillars in IC 1848
SOFIA/upGREAT far-infrared spectroscopy of bright rimmed pillars in IC 1848 Open
Using the upGREAT instrument on SOFIA, we imaged the [C II ] 158 µm fine structure line emission in bright-rimmed pillars located at the southern edge of the IC 1848 H II region, and carried out pointed observations of the [O I ] 63 and 14…
View article: The [O I] fine structure line profiles in Mon R2 and M17 SW: The puzzling nature of cold foreground material identified by [<sup>12</sup>C II] self-absorption
The [O I] fine structure line profiles in Mon R2 and M17 SW: The puzzling nature of cold foreground material identified by [<sup>12</sup>C II] self-absorption Open
Context. Recent studies of the optical depth comparing [ 12 C II ] and [ 13 C II ] line profiles in Galactic star-forming regions have revealed strong self-absorption in [ 12 C II ] by low excitation foreground material. This implies a hig…
View article: SOFIA/upGREAT far-infrared spectroscopy of bright rimmed pillars in IC 1848
SOFIA/upGREAT far-infrared spectroscopy of bright rimmed pillars in IC 1848 Open
Using the upGREAT instrument on SOFIA, we have imaged the [C II] 158 μm fine structure line emission in bright-rimmed pillars located at the southern edge of the IC1848 H II region, and carried out pointed observations of the [O I] 63 and …
View article: The [OI] fine structure line profiles in Mon R2 and M17 SW: the puzzling nature of cold foreground material identified by [12CII] self-absorption
The [OI] fine structure line profiles in Mon R2 and M17 SW: the puzzling nature of cold foreground material identified by [12CII] self-absorption Open
Context. Recent studies of the optical depth comparing [12CII] and [13CII] line profiles in Galactic star-forming regions revealed strong self-absorption in [12CII] by low excitation foreground material, implying a large column density of …
View article: Ionized carbon as a tracer of the assembly of interstellar clouds
Ionized carbon as a tracer of the assembly of interstellar clouds Open
View article: Characterization of a Panel of Cross-Reactive Hantavirus Nucleocapsid Protein-Specific Monoclonal Antibodies
Characterization of a Panel of Cross-Reactive Hantavirus Nucleocapsid Protein-Specific Monoclonal Antibodies Open
Hantaviruses are emerging pathogens with a worldwide distribution that can cause life-threatening diseases in humans. Monoclonal antibodies (MAbs) against hantavirus nucleocapsid (N) proteins are important tools in virus diagnostics, epide…
View article: Ionized carbon tracing the assembly of interstellar clouds
Ionized carbon tracing the assembly of interstellar clouds Open
Molecular hydrogen clouds are a key component of the interstellar medium because they are the birthplaces for stars. However, the details of how molecular clouds assemble and interact are still largely unknown. Thanks to new observations o…
View article: SOFIA FEEDBACK Survey: PDR Diagnostics of Stellar Feedback in Different Regions of RCW 49
SOFIA FEEDBACK Survey: PDR Diagnostics of Stellar Feedback in Different Regions of RCW 49 Open
We quantified the effects of stellar feedback in RCW 49 by determining the physical conditions in different regions using the [C ii ] 158 μ m and [O i ] 63 μ m observations from SOFIA, the 12 CO (3–2) observations from APEX, and the H 2 li…
View article: Network "Rodent-borne pathogens" in Germany: longitudinal studies on the geographical distribution and prevalence of hantavirus infections
Network "Rodent-borne pathogens" in Germany: longitudinal studies on the geographical distribution and prevalence of hantavirus infections Open
View article: Self-absorption in [C II], <sup>12</sup>CO, and H II in RCW120
Self-absorption in [C II], <sup>12</sup>CO, and H II in RCW120 Open
International audience
View article: Self-absorption in [C II], <sup>12</sup>CO, and H I in RCW120
Self-absorption in [C II], <sup>12</sup>CO, and H I in RCW120 Open
Aims. Revealing the 3D dynamics of H II region bubbles and their associated molecular clouds and H I envelopes is important for developing an understanding of the longstanding problem as to how stellar feedback affects the density structur…
View article: Red deer reveal spatial risks of Crimean‐Congo haemorrhagic fever virus infection
Red deer reveal spatial risks of Crimean‐Congo haemorrhagic fever virus infection Open
Crimean‐Congo haemorrhagic fever virus (CCHFV) continues to cause new human cases in Iberia while its spatial distribution and ecological determinants remain unknown. The virus remains active in a silent tick‐animal cycle to which animals …
View article: First detection of [<sup>13</sup>C II] in the Large Magellanic Cloud
First detection of [<sup>13</sup>C II] in the Large Magellanic Cloud Open
Context. [ 13 C II ] observations in several Galactic sources show that the fine-structure [ 12 C II ] emission is often optically thick (the optical depths around 1 to a few). Aims. Our goal was to test whether this also affects the [ 12 …
View article: Laboratory Findings, Compassionate Use of Favipiravir, and Outcome in Patients With Ebola Virus Disease, Guinea, 2015—A Retrospective Observational Study
Laboratory Findings, Compassionate Use of Favipiravir, and Outcome in Patients With Ebola Virus Disease, Guinea, 2015—A Retrospective Observational Study Open
Background In 2015, the laboratory at the Ebola treatment center in Coyah, Guinea, confirmed Ebola virus disease (EVD) in 286 patients. The cycle threshold (Ct) of an Ebola virus–specific reverse transcription–polymerase chain reaction ass…
View article: The upGREAT Dual Frequency Heterodyne Arrays for SOFIA
The upGREAT Dual Frequency Heterodyne Arrays for SOFIA Open
We present the performance of the upGREAT heterodyne array receivers on the SOFIA telescope after several years of operations. This instrument is a multi-pixel high resolution ([Formula: see text]) spectrometer for the Stratospheric Observ…
View article: Serosurvey of Crimean–Congo Hemorrhagic Fever Virus in Cattle, Mali, West Africa
Serosurvey of Crimean–Congo Hemorrhagic Fever Virus in Cattle, Mali, West Africa Open
Crimean–Congo hemorrhagic fever is a tick-borne disease caused by the arbovirus Crimean–Congo hemorrhagic fever virus (CCHFV, family Bunyaviridae, genus Nairovirus ). CCHFV can cause a severe hemorrhagic fever with high-case fatality rates…
View article: High performance 4.7 THz GaAs quantum cascade lasers based on four quantum wells
High performance 4.7 THz GaAs quantum cascade lasers based on four quantum wells Open
GaAs/AlGaAs quantum cascade lasers based on four quantum well structures operating at 4.7 THz are reported. A large current density dynamic range is observed, leading to a maximum operation temperature of 150 K for the double metal wavegui…
View article: Analysis of Diagnostic Findings From the European Mobile Laboratory in Guéckédou, Guinea, March 2014 Through March 2015
Analysis of Diagnostic Findings From the European Mobile Laboratory in Guéckédou, Guinea, March 2014 Through March 2015 Open
Virus load, age, and malaria parasite coinfection play a role in the outcome of EVD.
View article: Unique human immune signature of Ebola virus disease in Guinea
Unique human immune signature of Ebola virus disease in Guinea Open
View article: Real-time, portable genome sequencing for Ebola surveillance
Real-time, portable genome sequencing for Ebola surveillance Open
View article: Sheep and goats as indicator animals for the circulation of CCHFV in the environment
Sheep and goats as indicator animals for the circulation of CCHFV in the environment Open
Crimean-Congo hemorrhagic fever virus (CCHFV) is a tick-borne virus, which causes a serious illness with case-fatality rates of up to 80% in humans. CCHFV is endemic in many countries of Africa, Asia and Southeastern Europe. Next to the co…
View article: Temporal and spatial analysis of the 2014–2015 Ebola virus outbreak in West Africa
Temporal and spatial analysis of the 2014–2015 Ebola virus outbreak in West Africa Open
View article: Spatiotemporal dynamics of Puumala hantavirus associated with its rodent host, <i>Myodes glareolus</i>
Spatiotemporal dynamics of Puumala hantavirus associated with its rodent host, <i>Myodes glareolus</i> Open
Many viruses significantly impact human and animal health. Understanding the population dynamics of these viruses and their hosts can provide important insights for epidemiology and virus evolution. Puumala virus ( PUUV ) is a European han…
View article: Circulation of Crimean-Congo Hemorrhagic Fever Virus in the Former Yugoslav Republic of Macedonia Revealed by Screening of Cattle Sera Using a Novel Enzyme-linked Immunosorbent Assay
Circulation of Crimean-Congo Hemorrhagic Fever Virus in the Former Yugoslav Republic of Macedonia Revealed by Screening of Cattle Sera Using a Novel Enzyme-linked Immunosorbent Assay Open
This article describes a fully validated, highly sensitive and specific ELISA for the detection of CCHFV-specific IgG antibodies in cattle. Using this assay, CCHFV-specific antibodies were detected for the first time in cattle in the Forme…