منابع مشابه
Supernova 2002 ap : the first month
Supernova (SN) 2002ap in M74 was discovered on 2002 January 29. Being one of the nearest (lOMpc) SN events in the last decades, and spectroscopically similar to the so-called ‘hypernovae’ 1997ef and 1998bw, both possibly associated with gamma-ray bursts (GRBs), it is of great interest. Shortly after its discovery, we launched an intensive photometric and spectroscopic monitoring campaign of thi...
متن کاملPhotospheric-phase Spectropolarimetry and Nebular-phase Flux Spectra of the Peculiar Type Ic Supernova 2002ap
The early-time optical spectrum of the Type Ic supernova (SN) 2002ap was characterized by unusually broad features, leading some authors to designate it a “hypernova.” We present optical spectropolarimetry of this object 16 and 37 days after the estimated date of explosion. After correcting for interstellar polarization, we find evidence for a high level of intrinsic continuum polarization at b...
متن کاملBowel Obstruction in the First Month of Life
Background: The aim of this study was to analyze the etiology, symptom frequency, management, and surgical outcome of gastrointestinal obstruction in the first month of life.Methods: A total of 72 neonates with gastrointestinal obstruction were reviewed over a period of 16 months.Results: The male to female ratio was 2.4:1. In this study, 75% of the neonates were presented in the fi...
متن کاملCOMPARISON OF BREASTFEEDING SELF-EFFICACY AMONG MOTHERS OF HOSPITALIZED AND NON-HOSPITALIZED NEWBORN, DURING THE FIRST WEEK, THE FIRST MONTH AND THE THIRD MONTH AFTER CHILDBIRTH
Background & Aims: Breast milk is the best food for all neonates. Self-efficacy includes the belief and confidence of the individual in his ability to perform health behaviors, including exclusive successful breastfeeding. Self-efficacy in breastfeeding is vital for breastfeeding continuation. In addition, self-efficacy is an important variable in predicting the duration of breastfeeding, as we...
متن کاملThe First Supernova Explosions in the Universe
We investigate the supernova explosions that end the lives of massive Population III stars in low-mass minihalos (M ∼ 10M⊙) at redshifts z ∼ 20. Employing the smoothed particle hydrodynamics method, we carry out numerical simulations in a cosmological set-up of pair-instability supernovae with explosion energies of ESN = 10 51 and 10 ergs. We find that the more energetic explosion leads to the ...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2002
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.2002.05535.x