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Questions tagged [light-curve]

Questions about the time-dependence of the light intensity of a celestial object or region.

20 questions with no upvoted or accepted answers
4 votes
0 answers
107 views

What could successive double dips in the light-curve mean?

I was going through some analysis of the TESS light-curve data and I stumbled upon an interesting example (see below figures, where the blue line is simply a moving average), where the light-curve ...
Tom's user avatar
  • 141
3 votes
0 answers
357 views

How does the size of a naked black hole effect its photon sphere?

What effect does the size of a black hole have on the size or density of the photon sphere and it's proximity to the horizon? For example: A person is in space looking at 2 black holes, one of them ...
Muze's user avatar
  • 1
2 votes
0 answers
27 views

Using data from the Fine Guidance System (HST)

Has anyone been able to successfully use data from the Hubble Space Telescope's fine guidance system in order to create light curves? I found a bunch of older papers that reference this instrument, ...
Ritvik Sai Narayan's user avatar
2 votes
0 answers
67 views

Finding the uncertainty in period for String-Length Minimization calculation

I wrote a Python script that calculates the period of an unevenly sampled data set using the String-Length Minimization method. You can read about that method here: A period-finding method for sparse ...
Zachary Kennedy's user avatar
2 votes
0 answers
35 views

Which value of the apparent magnitude do I use from a Supernova light curve

I am trying to get the distance modulus from a light curve of a supernova and obviously the apparent magnitude changes with time. Not only that but there are so many filters with different mags. So my ...
Abdullah's user avatar
2 votes
0 answers
109 views

Should I fit a function to this lightcurve?

I am creating a light curve for the duration of a binary system in order to find out the duration of the eclipse. I am unsure as to whether to fit a function to the data (is it appropriate) as by ...
Owen Johnson's user avatar
2 votes
0 answers
86 views

How to model blazar light curves

I have SED data spanning over a couple of days and I'm able to find the parameters of the SED (R, B, break energy,...) using least squares method. My question is how to model light curves (with t_acc, ...
Andrija Župić's user avatar
2 votes
0 answers
57 views

A basic question about light curves

I'm new here, so if I've done anything wrong, please let me know. I've been taking a look at some photometry data collected from TESS, and I encountered this light curve: (please ignore the blue and ...
will's user avatar
  • 21
2 votes
0 answers
66 views

Finding the precession period of folded light curves

I was supposed to find the precession of a certain frequency in a time series. I tried breaking down the time series into smaller intervals and folded them over the average frequency I'm interested in....
siddhant solanki's user avatar
2 votes
0 answers
93 views

Depth of primary and secondary minimum in a light curve

How can I explain approximately the same depth of primary and secondary minimum in light curve? I observe star HD 36486. I tried filters MOST and BRITE. Is it related with photometric filter? When ...
Lukáš Altman's user avatar
1 vote
0 answers
42 views

plotting light curve for x ray data

how can I plot the light curve for Chandra X-ray data? I want to extract the counts within the specified energy range from the light curve. e.g., I have to extract the counts within the energy range ...
Walker's user avatar
  • 51
1 vote
0 answers
33 views

Differentiating supernova types with light curves

as an introductory activity for my work on transients, I am studying the light curves of different supernovae. It appears that Type-I supernovae have a more pronounced maximum than Type-II supernovae. ...
Ambica Govind's user avatar
1 vote
0 answers
120 views

easy curve modeling package for transits that fits the data not just the parameters?

Does anyone have any recommendations for easy-to-use exoplanet transit light curve model fitting packages like batman, but that fits the data, not just the model parameters? Thank you so much. I need ...
strange_octopi's user avatar
1 vote
0 answers
149 views

Simulating Light Curve with the Timmer & Koenig method in Python

How to simulate the light curve using the Timmer & Koenig method in python with error bars in each counts generated by that method. I have used astro ML but I doesn't show the error in the counts. ...
unicorn's user avatar
  • 21
1 vote
0 answers
46 views

Procedure to construct a spectral energy distribution and bolometric light curve of supernovae?

Can anyone check the logic of this proposed workflow and/or point me in the direction of a guide and example to check my work? Proposed procedure to construct a spectral energy distribution and ...
ames's user avatar
  • 11

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