9 research outputs found
MAGIC and Fermi-LAT gamma-ray results on unassociated HAWC sources
The HAWC Collaboration released the 2HWC catalogue of TeV sources, in which 19 show no association with any known high-energy (HE; E greater than or similar to 10 GeV) or very-high-energy (VHE; E greater than or similar to 300 GeV) sources. This catalogue motivated follow-up studies by both the Major Atmospheric Gamma-ray Imaging Cherenkov (MAGIC) and Fermi-LAT (Large Area Telescope) observatories with the aim of investigating gamma-ray emission over a broad energy band. In this paper, we report the results from the first joint work between High Altitude Water Cherenkov (HAWC), MAGIC, and Fermi-LAT on three unassociated HAWC sources: 2HWC J2006+341, 2HWC J1907+084*, and 2HWC J1852+013*. Although no significant detection was found in the HE and VHE regimes, this investigation shows that a minimum 1 degrees extension (at 95 per cent confidence level) and harder spectrum in the GeV than the one extrapolated from HAWC results are required in the case of 2HWC J1852+013*, whilst a simply minimum extension of 0.16 degrees (at 95 per cent confidence level) can already explain the scenario proposed by HAWC for the remaining sources. Moreover, the hypothesis that these sources are pulsar wind nebulae is also investigated in detail
Relationship between elevated serum level of placental growth factor and status of gestational diabetes mellitus
Comparison of the Blood Level OF Leptin in Umbilical Cord of Newborns of Mothers With Gestational Diabetes and Normal Mothers and Its Relationship With Growth Indices of Newborns
Umbilical artery resistance index in diabetic pregnancies: The associations with fetal outcome and neonatal septal hypertrophic cardiomyopathy
Influence of Maternal Hyperglycemia on IL-10 and TNF-α Production: The Relationship with Perinatal Outcomes
The associations of high birth weight with blood pressure and hypertension in later life: A systematic review and meta-analysis
The associations of high birth weight with blood pressure and hypertension in later life: a systematic review and meta-analysis
Opportunities in posthemorrhagic hydrocephalus research: outcomes of the Hydrocephalus Association Posthemorrhagic Hydrocephalus Workshop
Multimessenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922A
Previous detections of individual astrophysical sources of neutrinos are limited to the Sun and the supernova 1987A, whereas the origins of the diffuse flux of high-energy cosmic neutrinos remain unidentified. On 22 September 2017, we detected a high-energy neutrino, IceCube-170922A, with an energy of ~290 teraâelectron volts. Its arrival direction was consistent with the location of a known Îł-ray blazar, TXS 0506+056, observed to be in a flaring state. An extensive multiwavelength campaign followed, ranging from radio frequencies to Îł-rays. These observations characterize the variability and energetics of the blazar and include the detection of TXS 0506+056 in very-high-energy Îł-rays. This observation of a neutrino in spatial coincidence with a Îł-rayâemitting blazar during an active phase suggests that blazars may be a source of high-energy neutrinos