Register to reply

How to convert flux from counts to erg.

by RHK
Tags: convert, counts, flux
Share this thread:
Nov8-12, 09:41 AM
P: 64
Hello everyone.
I am trying to translate the flux of a source observed by a telescope, in different units.
In my case, I have the flux equal to counts/cm^2/sec in a given energy band (15-50 keV) and I want to translate this information in erg/cm^2/sec, in the same energy band
Here you can find an example:

Does anyone know how can I do that?

Every suggestion is really appreciated.
Phys.Org News Partner Astronomy news on
Magnetar discovered close to supernova remnant Kesteven 79
Image: Hubble looks at light and dark in the universe
Mixing in star-forming clouds explains why sibling stars look alike
Nov8-12, 10:16 AM
P: 614
each count is just a photon with that specific energy level, so you just have to multiply the number of photons by the energy of the photons. Then of course convert from keV to erg, which just means multiplying by some conversion constants.

er wait, I think I misread the graph, sorry >.> what's on the bottom axis?
Nov8-12, 10:22 AM
P: 64
The time, in MJD (modified julian date, it is like "days").

Nov8-12, 10:25 AM
P: 614
How to convert flux from counts to erg.

oh, I see, I'm sorry but I thought I could help but I don't know either

Register to reply

Related Discussions
Magnitude of Stars - Flux, Photon Counts Advanced Physics Homework 9
Find flux of CO2: convert (μmolCO2 (mol air)^-1) to (mgC)(m^-2 of ground hr^1) Introductory Physics Homework 1
Conversion of Photon flux to Counts Advanced Physics Homework 2
Source counts Advanced Physics Homework 0
Post Counts Forum Feedback & Announcements 3