Prospects for detecting light echoes of galactic supernovae by wide-angle polarimetry

Maslov, I. A.

doi:10.1134/1.20411

Cited by 5 publications

(5 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At multiple measurements of several sky zones with a total area of 200-400 square degrees, the instrumentation and the method of processing described above allow us to obtain root-meansquare variation of the differences of polarized component of the background for the neighboring regions about several stars of 10 m per square degree. This allows one to investigate the polarization of emission of weak comet tails and to have a hope for reaching the sensitivity necessary to detect the light echo of historical supernovae [7]. …”

Section: Resultsmentioning

confidence: 99%

Wide-angle polarimetry of the night sky: Measurements of atmospheric glow and zodiacal light

Ougolnikov

Montmessin

2005

Cosmic Res

Self Cite

View full text Add to dashboard Cite

This paper is devoted to the analysis of the results of wide-angle polarimetric observations of the night sky, which has been carried out in December 2002 in the Southern Laboratory of Shternberg State Astronomical Institute (Crimea, Ukraine) in a color band close to the V band (the effective wavelength is 5250 Å). We propose a method with the help of which the sky light was separated into basic components: the atmospheric glow, emission of weak stars, and the zodiacal light. The polarization map of extra-atmospheric emission of five sky zones close to the ecliptic is constructed, and it is shown that polarization of the sky background far from the antisolar point is determined, in the main, by the zodiacal light. For each observational period, the time dependence of the atmospheric luminosity and absorption is obtained.

show abstract

Section: Resultsmentioning

confidence: 99%

Wide-angle polarimetry of the night sky: Measurements of atmospheric glow and zodiacal light

Ougolnikov

Montmessin

2005

Cosmic Res

Self Cite

View full text Add to dashboard Cite

show abstract

“…The influence of echoes on the light curves of Type II supernovae (SNe) has been discussed by, e.g., Di Carlo et al (2002), Roscherr & Schaefer (2000), Filippenko et al (1995), Chugai (1992), and Mackey (1987). The detection of echoes has been investigated around SNe (Wright 1980;Chevalier 1986;Schaefer 1987aSchaefer , 1987bEmmering & Chevalier 1989;Sparks 1994;Maslov 2000), novae (Gehrz 1988), and flaring stars (Argyle 1974;Bromley 1992;Gaidos 1994).…”

Section: Introductionmentioning

confidence: 99%

Observability of Scattered-Light Echoes around Variable Stars and Cataclysmic Events

Sugerman

2003

Astron J

View full text Add to dashboard Cite

Scattered-light echoes from variable and cataclysmic stars offer one of the most effective means to probe the structure and composition of circumstellar and interstellar media. I build a simple model of light-echo surface brightness by considering the source spectrum and the dust density, geometry, and scattering efficiency. I use this model to investigate whether echoes should be observable around short and long-period giants, cataclysmic variables, and supernovae. Only supernovae are expected to illuminate material on both circumstellar and interstellar scales. Giant and post-AGB stars (e.g., Cepheids and Miras) with high mass-loss rates can produce observable echoes within their circumstellar envelopes. Echoes from novae and dwarf novae are probably detectable only from nearby material, and only in unusually dense gas. I present characteristic exposure times to image such echoes over a wide range of wavelengths for ground-based and Hubble Space Telescope observations. I apply these results to analyze the dust properties of the recently reported echoes around SN 1993J, finding the dust in M81 to have a grain-size distribution and chemical composition consistent with Galactic dust. Optimal observing strategies for echo detection are also discussed.

show abstract

“…Another problem related with prolonged polarization background mapping is the possibility of supernova echoes discovering and investigation. The polarized spots with several years variability should be observable (Maslov, 2000) around the locations of supernovas that were observed several centuries ago. Observations of these spots would give the information about interstellar medium of our Galaxy.…”

Section: Introductionmentioning

confidence: 92%

Near-Earth Observations by Widely Separated Telescopes

Maslov

Aust

Eremin

et al. 2003

Astronomical & Astrophysical Transactions

Self Cite

View full text Add to dashboard Cite

We suggest the idea of a total-sky survey at the International Space Station by four small wide-angle telescopes with polarization filters and charge-coupled device arrays separated several metres from one another. The video information processing will be carried out by a real-time multiprocessor system on board the station. This experiment would allow us to observe the sunlit space debris and meteoroids of centrimetre size with estimations of their distances and velocities at distances up to 20 km from the station and to investigate the interplanetary and interstellar medium by making polarization sky maps and detecting the weak-contrast features on them.

show abstract

Prospects for detecting light echoes of galactic supernovae by wide-angle polarimetry

Cited by 5 publications

References 3 publications

Wide-angle polarimetry of the night sky: Measurements of atmospheric glow and zodiacal light

Wide-angle polarimetry of the night sky: Measurements of atmospheric glow and zodiacal light

Observability of Scattered-Light Echoes around Variable Stars and Cataclysmic Events

Near-Earth Observations by Widely Separated Telescopes

Contact Info

Product

Resources

About