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Change to black hole growth during starbursts #7

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Change to black hole growth during starbursts #7

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1a8ce3a
Update disk_instability.cpp
jordanrossiter Aug 4, 2022
5fb87d2
Update galaxy_mergers.cpp
jordanrossiter Aug 4, 2022
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8 changes: 5 additions & 3 deletions src/disk_instability.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -188,9 +188,11 @@ void DiskInstability::create_starburst(SubhaloPtr &subhalo, GalaxyPtr &galaxy, d
// Define accretion rate.
galaxy->smbh.macc_sb = delta_mbh/tdyn;

// Grow SMBH.
galaxy->smbh.mass += delta_mbh;
galaxy->smbh.mass_metals += delta_mzbh;
// Check if SMBH exists in this galaxy, then grow it.
if(galaxy->smbh.mass != 0){
galaxy->smbh.mass += delta_mbh;
galaxy->smbh.mass_metals += delta_mzbh;
}

// Reduce gas available for star formation due to black hole growth.
galaxy->bulge_gas.mass -= delta_mbh;
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7 changes: 5 additions & 2 deletions src/galaxy_mergers.cpp
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Expand Up @@ -540,8 +540,11 @@ void GalaxyMergers::create_starbursts(HaloPtr &halo, double z, double delta_t){
physicalmodel->evolve_galaxy_starburst(*subhalo, *galaxy, z, delta_t, true);

// Grow SMBH after starbursts, as during it we need a realistical measurement of Ledd the BH had before the starburst.
galaxy->smbh.mass += delta_mbh;
galaxy->smbh.mass_metals += delta_mzbh;
// Check if SMBH exists in this galaxy, then grow it.
if(galaxy->smbh.mass != 0){
galaxy->smbh.mass += delta_mbh;
galaxy->smbh.mass_metals += delta_mzbh;
}

// Check for small gas reservoirs left in the bulge, in case mass is small, transfer to disk.
if(galaxy->bulge_gas.mass > 0 && galaxy->bulge_gas.mass < parameters.mass_min){
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