All Questions
Tagged with time-domain-astronomy observational-astronomy
11
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3
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1
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769
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Automated (and hopefully free) systems I can subscribe to sending email or SMS text message when the T Coronae Borealis Nova becomes visible?
My earlier question about predicted potentially observable events Has a gravitational microlensing event ever been predicted? If so, has it been observed? is limited to microlensing.
Now I have just ...
- 30.7k
2
votes
0
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110
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History, significance and "drama" (if any) of T-Tauri stars, especially the early bits?
In this answer to Can I write a systematic review as an undergraduate and get it published in a journal? in Academia SE I recounted my memory of an experience from circa 1980:
I had an initially ...
- 30.7k
4
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2
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83
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Are chirped gravitational wave events generally first identified by searching through libraries of chirps?
Comments below What does "GPU-accelerated butterfly matched filtering over dense bank of time-symmetric chirp-like templates" mean? (GW170817) suggest that for this technique a library of ...
- 30.7k
3
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1
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What is the fraction of the time that the JWST could view a short transient event on-demand as a function of position on the celestial sphere?
In this answer to Why does JWST have such a big Blind Spot? I argue that this space telescope primary relationship with time is that it strives to look way back in it and so as long as a given ...
- 30.7k
4
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1
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73
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How much time do I have left to easily spot the recently brightened Recurrent Nova RS Ophiuchi with binoculars and mild light pollution?
Excellent answers to Binocular-friendly star map to find the Recurrent Nova RS Ophiuchi? provide some helpful maps for circa 8° FOV binoculars, but due to spatial and potential meteorological ...
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1
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0
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91
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What is a typical "pulse rate" for a black hole "heartbeat"? Is the process better understood than it was in 2011?
The 2011 NASA Goddard video NASA | RXTE Detects 'Heartbeat' Of Smallest Black Hole Candidate mentions a heartbeat and includes a graphic of pulses from GRS 1915+105. A screenshot is shown below. No ...
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5
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514
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Is "magnetars don't last long — just a year to a few years" really true? Is it a misquote or perhaps taken out of context?
NASA's Two Sides of the Same Star discusses the relationship between pulsars and magnetars and contains a video also linked below.
At 02:13 it quotes "Tom ...
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2
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0
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168
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Are astronomers still using photomultiplier tubes for optical photometry?
In Time domain astronomy and fastest eclipsing binary ZTF J1539+5027 (+20 mag, 6.91 minutes) How to measure it's minimum brightness? I've written
A logarithmic magnitude scale might tend to show ...
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3
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1
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Time domain astronomy and fastest eclipsing binary ZTF J1539+5027 (+20 mag, 6.91 minutes): How to measure its minimum brightness?
Per Wikipedia's ZTF J153932.16+502738.8
ZTF J153932.16+502738.8 is a double binary white dwarf with an orbital period of just 6.91 minutes. [...] The light curve shows eclipses. One dip in the light ...
- 30.7k
1
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0
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In what ways are neural net classifiers "better" than search algorithms for eclipsing star system searches? (1D time series, not images of cats)
Neural net classifiers are both "hot" and useful.
TIC 168789840: A Sextuply-Eclipsing Sextuple Star System is quite an interesting read, and describes the use of one trained on a ...
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0
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1
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180
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The definition of eclipsing binary star systems
In the second minimum (the 3rd step) there is a smaller decrease in light intensity. For this to happen, wouldn't you need to be looking at the plane of orbit from above rather than directly along the ...
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