Advanced search in
Research products
arrow_drop_down
Searching FieldsTerms
Any field
arrow_drop_down
includes
arrow_drop_down
Include:
1,157 Research products, page 1 of 116

  • 2012-2021
  • Other ORP type
  • DK
  • English
  • Online Research Database In Technology

10
arrow_drop_down
Date (most recent)
arrow_drop_down
  • Open Access English
    Authors: 
    Enoto, Teruaki; Ng, Mason; Hu, Chin-Ping; Bansal, Karishma; Gendreau, Keith; Arzoumanian, Zaven; Strohmayer, Tod; Wadiasingh , Zorawar; Guver, Tolga; B. Pearlman, Aaron; +8 more
    Country: Denmark

    Following Swift’s discovery of a new magnetar candidate, Swift J1555.2-5402, on June 3, 2021 (GCN circular 30120, 30124), NICER discovered a 3.86-sec periodicity from this source (GCN 30121). NICER has been monitoring Swift J1555.2-5402 since 13:43 UT on June 3 with a total 4.2 ks exposure as of 11:48 UT June 4. Here we report refined timing analyses after barycentric correction, as well as on the X-ray spectral and bursting properties of this source. The background-subtracted average source count rate is 3.69 cps in the 1-10 keV band. After barycentric correction of the event data at the reported coordinates (RA: 15:55:08.66s, Dec: -54:03:41.1) in GCN 30122, we found a coherent periodicity at 0.2590004(17) Hz with a significance of approximately 30 sigma. The X-ray pulse profile has a single peak. Its period derivative has yet to be measured. The NICER 1-10 keV spectrum can be approximated by an absorbed blackbody model, with best fit spectral parameters N_H=(7.7 +/- 0.3)e+22 cm-2, kT=1.24 +/- 0.03 keV, with an apparent emitting radius at 10 kpc of R=1.8 +/- 0.1 km. The absorbed and unabsorbed X-ray fluxes of the source in the same energy range are (4.4 +/- 0.1)e-11 and (6.94 +/- 0.12)e-11 ergs/s/cm2, respectively. Errors represent 1 sigma uncertainties. These parameters are in the range of known magnetars in outburst. We detected four short burst (< 1 s) candidates with significance > 5 sigma during the observation. The source is still active, and multiwavelength coordinated observations are encouraged. All these results confirm that Swift J1555.2-5402 is a new magnetar in outburst. The NICER team is planning to monitor this target to measure its spin-down rate and flux decay. NICER is a 0.2-12 keV X-ray telescope operating on the International Space Station. The NICER mission and portions of the NICER science team activities are funded by NASA.

  • Open Access English
    Authors: 
    Jensen, Bodil Hamborg; Bennekou, Susanne Hougaard;
    Country: Denmark

    Fødevarestyrelsen har bedt DTU Fødevareinstituttet om en sundhedsmæssig risikovurdering af et restindhold af ethylenoxid på 13 mg/kg i locust bean gum (E410).

  • Other research product . Other ORP type . 2021
    Open Access English
    Authors: 
    Puig, Daniel; Roberts, Erin;
    Country: Denmark

    Summary of climate talks of the 26th Conference of the Parties (COP26) to the United Nations Framework Convention on Climate Change (UNFCCC) opened on 31st October 2021and closed on 13th November 2021.

  • Other research product . Other ORP type . 2021
    Open Access English
    Authors: 
    Jensen, Bodil Hamborg; Bennekou, Susanne Hougaard;
    Country: Denmark

    Fødevarestyrelsen har bedt DTU Fødevareinstituttet om en sundhedsmæssig risikovurdering af ingefærpulver med restindhold af ethylenoxid på 0,77 mg/kg.

  • Other research product . Other ORP type . 2021
    Open Access English
    Authors: 
    Banis, Frederik; Madsen, Henrik; Vardanyan, Yelena; Pourmousavi Kani, Seyyed Ali; Guericke, Daniela; Poulsen, Niels Kjølstad;
    Publisher: Technical University of Denmark
    Country: Denmark

    Electric Vehicles (EVs) will play an important role in the future of transportation. EVs - similarly to other Distributed Energy Resources (DER) such as small photovoltaic units - also modify consumption patterns to an extent where this can and, in many cases, will lead to problematic operating conditions of the system if we do not consider appropriate countermeasures. Such countermeasures are means to resolve operational issues by improving the physical infrastructure or the way one operates the system.

  • Other research product . Other ORP type . 2021
    Open Access English
    Authors: 
    Vinggaard, Anne Marie;
    Country: Denmark
  • Open Access English
    Authors: 
    Jensen, Bodil Hamborg; Nielsen, Elsa Ebbesen;
    Country: Denmark

    Fødevarestyrelsen har bedt DTU Fødevareinstituttet om en sundhedsmæssig risikovurdering af et restindhold på 0,066 og 0,060 mg/kg af phosmet, 0,044 mg/kg af bifenthrin og 0,02 mg/kg af chlorpyrifos i en prøve af hindbær. MRL er 0,05* mg/kg for phosmet, 1,0 mg/kg for bifenthrin og 0,01* mg/kg for chlorpyrifos.

  • Other research product . Other ORP type . 2021
    Open Access English
    Authors: 
    Rygaard, Martin;
    Country: Denmark
  • Other research product . Other ORP type . 2021
    Open Access English
    Authors: 
    Hasager, Charlotte; Prieto, Raul; Pryor, Sara; Veraart, Marijn; Maniaci, David; Bech, Jakob Ilsted; Rahimi, Maral; Sánchez López, Fernando; Holst, Bodil;
    Country: Denmark
  • Other research product . Other ORP type . 2021
    Open Access English
    Authors: 
    Jensen, Bodil Hamborg; Nielsen, Elsa Ebbesen;
    Country: Denmark

    Fødevarestyrelsen har bedt DTU Fødevareinstituttet om en sundhedsmæssig risikovurdering af et restindhold på 0,012 mg/kg af dimethoat i en prøve af appelsin. MRL er 0,01* mg/kg.

Advanced search in
Research products
arrow_drop_down
Searching FieldsTerms
Any field
arrow_drop_down
includes
arrow_drop_down
Include:
1,157 Research products, page 1 of 116
  • Open Access English
    Authors: 
    Enoto, Teruaki; Ng, Mason; Hu, Chin-Ping; Bansal, Karishma; Gendreau, Keith; Arzoumanian, Zaven; Strohmayer, Tod; Wadiasingh , Zorawar; Guver, Tolga; B. Pearlman, Aaron; +8 more
    Country: Denmark

    Following Swift’s discovery of a new magnetar candidate, Swift J1555.2-5402, on June 3, 2021 (GCN circular 30120, 30124), NICER discovered a 3.86-sec periodicity from this source (GCN 30121). NICER has been monitoring Swift J1555.2-5402 since 13:43 UT on June 3 with a total 4.2 ks exposure as of 11:48 UT June 4. Here we report refined timing analyses after barycentric correction, as well as on the X-ray spectral and bursting properties of this source. The background-subtracted average source count rate is 3.69 cps in the 1-10 keV band. After barycentric correction of the event data at the reported coordinates (RA: 15:55:08.66s, Dec: -54:03:41.1) in GCN 30122, we found a coherent periodicity at 0.2590004(17) Hz with a significance of approximately 30 sigma. The X-ray pulse profile has a single peak. Its period derivative has yet to be measured. The NICER 1-10 keV spectrum can be approximated by an absorbed blackbody model, with best fit spectral parameters N_H=(7.7 +/- 0.3)e+22 cm-2, kT=1.24 +/- 0.03 keV, with an apparent emitting radius at 10 kpc of R=1.8 +/- 0.1 km. The absorbed and unabsorbed X-ray fluxes of the source in the same energy range are (4.4 +/- 0.1)e-11 and (6.94 +/- 0.12)e-11 ergs/s/cm2, respectively. Errors represent 1 sigma uncertainties. These parameters are in the range of known magnetars in outburst. We detected four short burst (< 1 s) candidates with significance > 5 sigma during the observation. The source is still active, and multiwavelength coordinated observations are encouraged. All these results confirm that Swift J1555.2-5402 is a new magnetar in outburst. The NICER team is planning to monitor this target to measure its spin-down rate and flux decay. NICER is a 0.2-12 keV X-ray telescope operating on the International Space Station. The NICER mission and portions of the NICER science team activities are funded by NASA.

  • Open Access English
    Authors: 
    Jensen, Bodil Hamborg; Bennekou, Susanne Hougaard;
    Country: Denmark

    Fødevarestyrelsen har bedt DTU Fødevareinstituttet om en sundhedsmæssig risikovurdering af et restindhold af ethylenoxid på 13 mg/kg i locust bean gum (E410).

  • Other research product . Other ORP type . 2021
    Open Access English
    Authors: 
    Puig, Daniel; Roberts, Erin;
    Country: Denmark

    Summary of climate talks of the 26th Conference of the Parties (COP26) to the United Nations Framework Convention on Climate Change (UNFCCC) opened on 31st October 2021and closed on 13th November 2021.

  • Other research product . Other ORP type . 2021
    Open Access English
    Authors: 
    Jensen, Bodil Hamborg; Bennekou, Susanne Hougaard;
    Country: Denmark

    Fødevarestyrelsen har bedt DTU Fødevareinstituttet om en sundhedsmæssig risikovurdering af ingefærpulver med restindhold af ethylenoxid på 0,77 mg/kg.

  • Other research product . Other ORP type . 2021
    Open Access English
    Authors: 
    Banis, Frederik; Madsen, Henrik; Vardanyan, Yelena; Pourmousavi Kani, Seyyed Ali; Guericke, Daniela; Poulsen, Niels Kjølstad;
    Publisher: Technical University of Denmark
    Country: Denmark

    Electric Vehicles (EVs) will play an important role in the future of transportation. EVs - similarly to other Distributed Energy Resources (DER) such as small photovoltaic units - also modify consumption patterns to an extent where this can and, in many cases, will lead to problematic operating conditions of the system if we do not consider appropriate countermeasures. Such countermeasures are means to resolve operational issues by improving the physical infrastructure or the way one operates the system.

  • Other research product . Other ORP type . 2021
    Open Access English
    Authors: 
    Vinggaard, Anne Marie;
    Country: Denmark
  • Open Access English
    Authors: 
    Jensen, Bodil Hamborg; Nielsen, Elsa Ebbesen;
    Country: Denmark

    Fødevarestyrelsen har bedt DTU Fødevareinstituttet om en sundhedsmæssig risikovurdering af et restindhold på 0,066 og 0,060 mg/kg af phosmet, 0,044 mg/kg af bifenthrin og 0,02 mg/kg af chlorpyrifos i en prøve af hindbær. MRL er 0,05* mg/kg for phosmet, 1,0 mg/kg for bifenthrin og 0,01* mg/kg for chlorpyrifos.

  • Other research product . Other ORP type . 2021
    Open Access English
    Authors: 
    Rygaard, Martin;
    Country: Denmark
  • Other research product . Other ORP type . 2021
    Open Access English
    Authors: 
    Hasager, Charlotte; Prieto, Raul; Pryor, Sara; Veraart, Marijn; Maniaci, David; Bech, Jakob Ilsted; Rahimi, Maral; Sánchez López, Fernando; Holst, Bodil;
    Country: Denmark
  • Other research product . Other ORP type . 2021
    Open Access English
    Authors: 
    Jensen, Bodil Hamborg; Nielsen, Elsa Ebbesen;
    Country: Denmark

    Fødevarestyrelsen har bedt DTU Fødevareinstituttet om en sundhedsmæssig risikovurdering af et restindhold på 0,012 mg/kg af dimethoat i en prøve af appelsin. MRL er 0,01* mg/kg.

Send a message
How can we help?
We usually respond in a few hours.